What Dosage of CBD Should You Take?
Kendra Cherry, MS, is an author and educational consultant focused on helping students learn about psychology.
Verywell Mind articles are reviewed by board-certified physicians and mental healthcare professionals. Medical Reviewers confirm the content is thorough and accurate, reflecting the latest evidence-based research. Content is reviewed before publication and upon substantial updates. Learn more.
John C. Umhau, MD, MPH, CPE is board-certified in addiction medicine and preventative medicine. He is the medical director at Alcohol Recovery Medicine. For over 20 years Dr. Umhau was a senior clinical investigator at the National Institute on Alcohol Abuse and Alcoholism of the National Institutes of Health (NIH).
Verywell / Madelyn Goodnight
CBD is available in a number of different formulations including creams, tablets, oils, and gummies. These can vary in terms of their ingredients as well as dosages, and there is not a great deal of research available on what dose might be beneficial or safe to treat certain conditions.
Cannabidiol (CBD) is the second most abundant cannabinoid found in marijuana. Unlike tetrahydrocannabinol (THC), CBD does not have psychoactive effects. Interest in the use of CBD for health purposes has grown tremendously in the last few years.
CBD is believed to have a range of positive physical and mental health effects. Because of this, it has become increasingly popular as a way to alleviate everything from anxiety to sleep disorders.
In order to determine if CBD is right for you, it is important to consider its potential benefits, side effects, and available research on safe dosages.
CBD is just one of hundreds of different compounds found in the cannabis plant. While cannabis has been used in holistic medicine for many years, only recently have researchers begun to explore some of the medicinal purposes for CBD and other cannabinoids.
While further research is still needed, there is some evidence that CBD may have some beneficial mental health effects. These include:
- Alleviating depression: Some research also indicates that CBD may be useful as a treatment for depression. Studies suggest that the cannabinoid might have an influence on how the brain responds to serotonin, a neurotransmitter that plays a key role in mood. People with depression sometimes have a low level of serotonin, so CBD may help the brain use available serotonin more effectively.
- Improving sleep: While the reasons are not entirely understood and require further research, CBD also appears to have potential as a treatment for sleep problems. For example, one study found that people who took CBD also reported improvements in the quality of their sleep.
- Reducing anxiety: Anxiety is one of the most common types of mental health conditions, affecting almost 20% of American adults each year. Research suggests that CBD may help alleviate acute symptoms of a number of anxiety-related conditions including generalized anxiety disorder, obsessive-compulsive disorder, and social anxiety disorder.
In addition to the mental health benefits, CBD may also have therapeutic benefits for a range of other conditions. The World Health Organization suggests that CBD may have beneficial effects in the treatment of:
- Alzheimer’s disease
- Cardiovascular disease
- Multiple sclerosis
It is important to remember that these benefits have not yet been conclusively proven. More research is needed to determine the role that CBD might play in the treatment of different disorders and health conditions.
There have been a number of studies that suggest that CBD may have a number of different physical and mental health uses. However, more research is still needed to better understand the substance’s potential applications and possible long-term side effects.
A 2019 comprehensive review published in The Lancet Psychiatry looked at previously published studies. The review ultimately concluded that there was little evidence to support the use of CBD for mental health purposes and suggested that more research is needed in order to substantiate its use to treat symptoms of conditions such as anxiety, depression, and insomnia.
It is important to remember that this doesn’t mean that CBD isn’t effective. Many of the studies that were included in the review were small, had few participants, and were not randomized controlled trials.
This suggests that more research involving more participants and well-designed studies is needed in order to better understand if, how, and why CBD works.
While its effectiveness is still up for debate, one 2017 review found that it was a relatively safe option. While it is important to remember that there is still a great deal we don’t yet know about CBD and its effects, it is something that you might opt to try to see if you experience any benefits.
How Much Should You Take?
The dosages used in research studies vary and there is no consensus on how much should be used for specific conditions. If you do decide to try CBD, it is also important to note that there is no universally agreed upon dose. Research also suggests that people may respond differently to various dosages, so the amount that is right for your needs might vary.
Some dosages that have been used in research studies for different conditions include:
- Anxiety: 300 to 600 mg
- Bowel disease: 10 mg per day
- Cancer-related pain: 50 to 600 mg per day
- Parkinson’s disease: 75 to 300 mg per day
- Poor sleep: 25 mg per day
- Psychosis: 600 mg per day
One 2020 review of studies found that participants showed improvements in anxiety levels after single doses of CBD ranging from 300 to 600 mg. Such results indicate that the CBD may hold promise as a treatment to alleviate symptoms of acute anxiety.
It is important to remember that you should always talk to your doctor before using CBD if you have symptoms of a serious mental or physical health condition. CBD could potentially worsen symptoms or interact with other medications you are taking.
Looking at the dosage information for the CBD product that has been FDA approved can also be helpful. For Epidiolex, an FDA-approved cannabis-derived medication used to treat seizures in people with certain types of epilepsy, the starting dosage is 5 milligrams per kilogram of body weight. This dose can later be increased to 5 mg per kilogram of body weight twice a day.
Other CBD products are not FDA regulated and do not have officially recommended dosages. This can make it difficult to determine how much you might need, but there are some things you can consider that might help.
- Assess your sensitivity to CBD: Your individual ability to tolerate CBD can also play a role in determining how much you need. If you are very sensitive to the effects of CBD, you should take a small dose. Some people may find that they are not as affected by the substance, so they may need to take a larger dose to notice any beneficial effects.
- Consider individual factors: When you are trying to decide how much CBD to take, there are a number of factors you should consider. These include the formulation and concentration of the capsule, oil drops, or gummies you are taking, the symptoms you are treating, and your age, sex, weight, and overall health. Generally, people with heavier bodies need to take a little more to achieve the same effects. Men may need a larger dose, while older people may need less.
- Consider the symptoms you’re treating: The symptoms you are trying to alleviate can also play a role in the CBD dosage you need to take to see results. In one study, participants who took 25mg of CBD each day had improved sleep quality, although the results were not consistent. However, you might find that you need a lower or higher dose if you are treating another type of condition.
- Try a dosage calculator: Researchers note that while the variety of dosing strategies and formulations make it difficult to determine efficacy, there are a number of online “dose-calculators” available online (such as mydosage.com) that are designed to help people choose the correct dose. The accuracy of such calculators is difficult to assess, but it may be a good place to start.
Before you try CBD, discuss your plan with your doctor. They may be able to recommend a dose and help you better understand any potential risks, complications, side effects, or interactions you might experience.
Start With a Low Dose
Unless your doctor recommends a specific dose, start by taking 10 to 20 mg a day. Take this for a week to ensure that it is well-tolerated and that you don’t experience any unwanted effects or an allergic reaction.
If this dose does not have the desired effect, try increasing in increments of 5mg each week until the desired amount is reached.
In studies, amounts vary from as low as 20 milligrams per day to up to 1,500 milligrams (mg) per day. The World Health Organization reports that dosages in clinical research studies typically range between 100 and 800 milligrams per day.
Is It Possible to Take Too Much?
So what is the maximum amount of CBD you should take? Researchers have found that 600 mg per day appears to be safe, but one study suggested that doses of up to 1,500 mg a day are safe and tolerated well.
However, it’s important to remember that research is still in its infancy and experts do not yet fully understand the potential long-term impacts of CBD usage. For that reason, you should always discuss your CBD use with your doctor.
Starting at a lower dose and working your way up to the amount you need may be the best ways to avoid taking too much.
How to Take CBD
The amount of CBD found in a product may depend on different factors, including the formulation and method of administration. CBD products are available in a number of different forms including oils, capsules, tablets, nasal sprays, and gummies.
One of the most popular ways to take CBD is as an oil. Such products are made by combining CBD with some type of carrier oil, such as coconut oil. Some more recently developed products include dietary supplements, foods, beverages, lotions, salves, and cosmetics.
The type of CBD product you choose may depend on what you are trying to treat. If you are looking for general mood improvements, a dietary supplement might be a good option.
If you are targeting specific symptoms of a condition, taking an oil, capsule, or gummy might be a better way to obtain a higher, more concentrated dose.
Topical applications may produce localized effects, but they are unlike to have any mental health benefits.
What Kind Should You Take?
It’s also important to remember that many products don’t contain just CBD on its own. There are three types of CBD available:
- Isolate contains CBD and only CBD.
- Broad-spectrum contains CBD and other cannabinoids, but not THC.
- Full-spectrum contains CBD, THC, and other cannabinoids.
It may be helpful to take a broad-spectrum product since research suggests that CBD’s effects may be most beneficial when taken in conjunction with other cannabinoids, a phenomenon known as the entourage effect. CBD may also help mitigate some of the effects of THC.
While CBD is generally well-tolerated, this does not mean that you won’t experience any side effects.
Some of the most common side effects that people experience when taking CBD include:
- Appetite changes
- Stomach upset
- Weight changes
Some recent research has generated concerns over the safety and potential long term effects of CBD. One study involved giving mice an equivalent of the maximum dose of the CBD medication Epidiolex, which is used to treat certain forms of epilepsy. The results indicated an increased risk for liver damage as well as concerns over its interaction with other medications.
It is also important to remember that CBD products are not regulated by the U.S. Food and Drug Administration (FDA). Some manufacturers make unproven claims about the uses and efficacy of their products. There is also concern about the quality and safety of the products themselves.
One report by the Centers for Disease Control and Prevention (CDC) indicated that a number of people experienced negative unwanted side effects due to CBD products that contained synthetic CBD, although the products were not labeled as containing such ingredients.
Mislabeling appears to be a fairly common problem with CBD products. In one study, 70% of the CBD products that were sold online contained significantly more of the psychoactive ingredient THC than the label indicated.
Federal law prohibits the sale of products that contain more than 0.3% THC. States laws also vary, so you should always check with your state before buying CBD products online.
A Word From Verywell
If you do decide to take CBD to alleviate an acute or chronic condition, remember that the amount that you take will depend on a variety of factors. Finding the right dosage often takes some experimentation and adjustments. Starting with a low dose and then gradually increasing the amount you take until you achieve the desired effects is the best approach.
5 Best CBD Oils for Nausea
This article contains affiliate links to products. We may receive a commission for purchases made through these links.
CBD or Cannabidiol is one of the 100+ cannabinoids that can be found in cannabis, which contains hemp and marijuana. CBD has been shown to have multiple health benefits for people with different conditions such as anxiety, pain, and even nausea.
5 Best CBD Oils for Nausea
What is Nausea?
Nausea occurs when you feel a sensation in the back of your throat, a sudden urge to vomit, and a feeling of uneasiness. Nausea can be triggered by an unpleasant odor, upset stomach, or even flashing lights at the disco. If you are pregnant, nausea is common around 6 weeks since it occurs during implantation.
Nausea is not a very dangerous condition, but it can be extremely uncomfortable. It is usually caused by an underlying disease or medical disorder. Nausea is one of the most common symptoms of pregnancy.
What causes nausea?
There are many reasons. Some include:
· Diseases of the digestive system such as food poisoning or a peptic ulcer.
· Problems with the inner ear, nose, throat, and stomach.
· Migraine headaches that are accompanied by symptoms like nausea and vomiting.
· Head injuries or concussions.
· High blood pressure.
· Severe anxiety or stress.
How can CBD Oil help?
There has been scientific research that suggests that not only does CBD reduce nausea, but it may also be able to reduce vomiting and the urge to vomit. The following is a list of conditions where CBD oil has been observed as beneficial:
· Nausea associated with chemo, radiation therapy, and headache.
· Vomiting associated with AIDS/HIV treatments.
· Anxiety disorders such as panic disorder, post-traumatic stress disorder (PTSD), social anxiety disorder (SAD), obsessive-compulsive disorder (OCD), depression, general anxiety disorder (GAD).
· Multiple sclerosis (MS).
Of course, you should always consult your doctor before adding CBD to any health regimen or routine.
What is CBD?
CBD, also known as Cannabidiol, is a chemical compound that comes from the hemp or marijuana plant. It contains less than 0.3% THC which means it does not produce psychoactive effects like those produced by THC. The human body has an endocannabinoid system that interacts with CBD to create balance in the body.
Are there any side effects of using CBD Oil for Nausea?
There have been no side effects reported from using CBD to treat nausea. In fact, several studies have found that it has a positive effect on reducing both vomiting and nausea.
The most commonly reported CBD side effects include:
· Low blood pressure.
The side effects of CBD are usually very mild. Some people have also experienced red eyes when using CBD in the form of e-liquid.
The criteria we used to determine the best CBD oils for nausea includes:
We only included those companies that met our requirements and had a proven track record of positive customer feedback and a strong reputation within the online community.
Customer feedback was given the highest priority in this category because it is the best way to determine how well a company is doing when it comes to customer service and product satisfaction.
We also wanted to ensure that these companies were well-established within the online community so they had a proven track record of providing high-quality products and services.
We also gave priority to those companies that had a strong reputation within the online community by regularly engaging with their customers and any questions or concerns they may have about their products.
Price, discounts, and specials.
It’s always nice when you can get a discount or special offer. We gave priority to those CBD products that offered a discount, sale, or special promotion whether it was for first-time buyers and/or returning customers.
We also placed a key factor on the companies that provided exceptional customer service and had reliable contact methods such as live chat, email support, FAQ’s, product FAQ’s, educational materials, and online tools.
As with any food or nutritional supplement, we want to ensure that what you’re ingesting is completely safe and of the highest quality. That’s why we prioritized the companies that had organic certification by a third-party organization.
Potency of CBD used.
We made sure that the CBD products offered by these companies had a high uptake rate. We also wanted to ensure that they were full-spectrum, which means they weren’t isolated or refined to only contain CBD but also contained other cannabinoids and terpenes including CBDA, CBCA, THC, CBG, and so on.
Price to value ratio.
We wanted to ensure that these CBD companies not only met our criteria but also provided products at a fair and reasonable price when compared with the competition.
How well the product worked for its intended use case.
We wanted to ensure that any product we recommended would be effective not only for its intended use but also safe and effective for your individual needs.
What are the best CBD oils for nausea?
The following is a list of CBD oils that have been observed as helpful in reducing symptoms related to nausea:
1. Penguin CBD
Image courtesy Penguin CBD
Penguin CBD offers a product called Liquid Gold, which contributes to the overall health of your body by providing you with CBD oil in addition to omega 3 fatty acids and amino acids. There is a 50 mg per bottle available. It is very easy to incorporate CBD into your daily routine just by taking this low does from Penguin CBD for your choice of CBD oils for nausea.
Image courtesy Everest
Everest is another product that helps fight nausea through the use of CBD oil. In fact, their oil is available in a variety of flavors including lemon, peppermint, orange, and more. The cost of the oil varies from $75 to $100 for one bottle which contains 300 mg of oil. A single serving of CBD should be .5 ml taken twice a day.
3. Verma Farms
Image courtesy Verma Farms
Among their offerings, Verma Farms also makes a product that helps reduce nausea with their Relief Gummies. These gummies come in a variety of flavors and cost $65 for one bottle containing 60 servings of CBD oil. A dose is 2 gummies and you can take up to 3 doses per day.
4. R+R Medicinals
R+R Medicinals is quickly becoming one of the most trusted and popular CBD brands by proving one thing – they make the CBD that works. Using supercritical CO2 extraction on their proprietary Cherry strain of USDA Certified Organic hemp, they yield an unparalleled profile of cannabinoids, terpenes, and other phytonutrients in their products that translate into guaranteed performance. Their 1000mg Fresh Mint Tincture is their best seller and of incredible value for a Full-Spectrum product at $46.99. R+R boasts impressive levels of CBD, CBG, CBC, CBN, CBL, and more in their products so you can truly feel the entourage effect. They also publish third party certificates of analysis on their site for every batch they make. In addition to being USDA Organic Certified, they are also US Hemp Authority Certified, and they have hundreds of 5-star ratings on Google, so you can take comfort in knowing they do things with the highest standards of safety and quality in mind.
Image courtesy cbdMD
cbdMD offers a CBD oil product that comes in a terpene-infused version and a plain version. The difference between the two is that the terpenes offer an added layer of scent and flavor. This product is $110 for 1 bottle containing 300 mg of oil. A single serving size is .5 ml taken twice per day.
How to store the best CBD oils for nausea?
One of the critical things to consider when storing CBD oil is that it needs to be properly sealed. If you do not, then moisture could enter into your product which can cause mold or bacteria to grow in your CBD oil. Once this happens, it won’t matter how well you seal your bottle because the oil has already been contaminated.
You should also avoid exposure to light which can cause your CBD oil to lose some of its efficacy. To keep it fresh, store it in a dark, cool cabinet or drawer away from sunlight.
Why does CBD work for nausea?
There are two explanations for why CBD could help with nausea. The first is that it interacts with the serotonin receptors in your body which can affect your perception or feelings about what you’re experiencing.
The second explanation is that CBD inhibits the growth of new cells in your stomach lining to reduce the frequency and severity of symptoms like vomiting and nausea.
Will CBD oils for nausea get me high?
No. While CBD has many of the same qualities as cannabis, it doesn’t contain the psychoactive compound THC. This means that you won’t feel high when taking CBD oil for nausea.
Do I need special CBD oil for nausea?
While most CBD oils are great for combating various types of chronic pain or anxiety, not all of them work well with vomiting and nausea. This is why it’s important to pick the right product that will meet your specific needs.
Is CBD oil legal?
CBD oil is legal in most places throughout the United States. With that being said, you should check your local laws before purchasing any CBD products.
What are other side effects of CBD oil?
Some people have experienced dry mouth or drowsiness when taking CBD because it interacts with receptors throughout your body. In most cases, these side effects will dissipate after taking CBD for a few weeks.
Are there any other ways to take CBD oil?
Besides swallowing a gummy or dropper full of CBD oil, you can also add it to food and drink. While the supplements have an unpleasant taste on their own, you can mask the taste by mixing the oil with honey, putting it in coffee or tea, or adding it to food.
What does CBD feel like?
Because CBD doesn’t contain THC (the psychoactive compound found in cannabis), you will not feel high when taking CBD. That said, there are reports of reduced anxiety and relaxation which could alter your perception, behavior, and how you feel.
What’s the difference between CBD and cannabis?
CBD is a compound found in cannabis. It can also be extracted from hemp and then sold as a supplement. The reason why CBD and cannabis are both classified as “hemp extracts” is because they share similar qualities like low toxicity and not causing a psychoactive high.
What other factors should I consider when buying CBD for nausea?
There are several factors that you should consider when buying CBD for nausea. Here are some of the most important questions to think about:
What is the source of CBD oil?
Look for a high-quality product made from organic hemp plants instead of marijuana plants. This will ensure that your CBD is free of heavy metals, pesticides, and other toxins.
What is the CBD to THC ratio of the product?
In general, it’s best to look for a product with as much CBD as possible and negligible amounts of THC. The higher the amount of CBD compared to THC, the more likely you’ll be to experience all of its health benefits without feeling high or experiencing negative side effects like anxiety and paranoia.
What is the concentration of CBD per milliliter?
The more milligrams of CBD that your product contains, the higher its potency and effects will be on your body. Look for a product that has at least 20 mg to 50 mg of CBD per milliliter.
How many milliliters are in the bottle?
Remember that the effects of CBD increase with concentration. If you buy a product with only 10 ml, it won’t last very long and you’ll likely have to re-purchase more frequently which can get costly.
What is the ideal serving size for my needs?
If you are new to CBD or if you don’t know what dose to use, start low and go slow. Start with one milliliter of the product and see how it affects you after 30 minutes. Consider using another milliliter if needed (but do not exceed eight milliliters in a 24-hour period).
How do I get CBD into my system?
There are several ways to get CBD into your system. The options include tinctures, edibles like gummies, and topical creams.
CBD Oil Tinctures
Tinctures are one of the most popular and easy-to-use CBD products. They come in a variety of concentrations and types like flavored or unflavored oils.
Some tinctures can be dropped directly onto your tongue while others need to be mixed with food or drinks before consuming. Tinctures typically take between 15 minutes and 1 hour to take effect and last for as long as six hours.
If you want a more discrete way of getting CBD into your system, gummies are a good option. They taste great and can be taken on the go without attracting too much attention from others. However, they tend to be a bit more expensive than CBD oil tinctures and typically contain lower concentrations of CBD.
CBD Topical Creams
Topical creams are ideal for those who want localized relief from pain. This type of cream can be rubbed directly onto the skin as needed. The effects of hemp topicals like these tend to take longer to kick in than vaping or taking an edible. Topicals can last for as long as six hours and are great for people who suffer from arthritis, neuropathy, or other localized pain.
Will CBD oil topical creams help with nausea?
Now that you know more about CBD oil tinctures, gummies, and topical creams, it’s time to consider whether or not topical CBD cream will help with nausea.
Topical hemp products offer localized relief of pain which can be especially helpful for people who suffer from chronic stomach pain related to nausea. This type of cream is also easy to use on the go which makes it a good option for people who tend to feel nauseous when they’re out and about.
Topicals may also help with motion sickness, though more research is needed in this area before we will know for certain if CBD oil topical creams can effectively treat nausea related to motion sickness.
What if I don’t like the taste of CBD Oils?
If you don’t like the taste of tinctures or gummies, try edibles instead. Many people prefer to ingest their CBD this way since it offers long-lasting effects and can be quite potent.
CBD oil edibles come in a variety of forms- from chocolate bars to drinks to even popcorn! The best part? CBD edibles usually taste better than their oil counterparts.
How fast does CBD oil work for nausea?
CBD oil typically takes between 15 to 60 minutes before it starts relieving your symptoms. If you’re using a topical product, it can take much longer- up to six hours in some cases.
Is CBD Oil safe for me?
This depends on whether or not you’re looking at hemp CBD oil vs marijuana CBD oil. CBD products that are derived from hemp plants are non-psychoactive and considered to be legal in all 50 states.
CBD oil products that come from marijuana plants will contain THC, the cannabinoid responsible for causing a high, which can lead to an array of potential side effects.
Talk to your doctor before trying any type of CBD product to make sure it is right for you.
5 Best CBD Oils for Nausea
Final Thoughts on CBD Oils for Nausea
CBD may be an effective treatment for nausea associated with diseases like cancer or even chemotherapy side effects. More studies are needed to fully understand the risks and benefits of using CBD to treat nausea but many people report positive results- especially when used in conjunction with traditional treatments.
The best way to benefit from topical CBD oil is by using products that are designed for localized pain relief. This may be especially helpful for people who suffer from stomach pain related to motion sickness or other types of nausea. Be sure to consider edible forms of CBD as well if you don’t like the taste of CBD oils for nausea in the tincture form or gummy form.
CBD Dosage: How Much Should You Take?
Commissions we earn from partner links on this page do not affect our opinions or evaluations. Our editorial content is based on thorough research and guidance from the Forbes Health Advisory Board.
Table of Contents
- Determining the Best CBD Dosage for You
- How to Calculate CBD Dosage
- How to Take CBD
Cannabidiol (CBD) is growing increasingly popular, thanks to its many purported health benefits and non-intoxicating properties (most CBD products contain less than 0.3% tetrahydrocannabinol, or THC). In fact, 60% of U.S. adults have tried CBD at some point and believe it has medicinal benefits, according to a recent Forbes Health survey of 2,000 U.S. adults conducted by OnePoll. As research evolves and sheds light on CBD’s efficacy, especially for pain relief, more and more people are adding it to their daily wellness regimens.
Consumers can choose from a variety of CBD products, from oils to gummies to vapes to capsules. But figuring out the safe and effective CBD dose for an individual is a complex decision.
You May Also Be Interested In CBD Gummies From Our Featured Partner
CBD & Melatonin Sleep Tight Gummies
On Medterra’s Website
CBD Keep Calm Gummies
On Medterra’s Website
CBD Stay Alert Gummies
On Medterra’s Website
Clinical Immune Boost CBD Gummies
On Medterra’s Website
True Full Spectrum™ Deep Sleep CBD Gummies
On Medterra’s Website
True Full Spectrum™ Original CBD Gummies
On Medterra’s Website
(Note: Product details and prices are accurate as of publication and are subject to change.)
Here’s how to find the right CBD dosage for you and how to consume it safely.
Determining the Best CBD Dosage for You
With the exception of one CBD product, a prescription drug used to treat seizures associated with particular syndromes, the Food and Drug Administration (FDA) doesn’t regulate the use of CBD. (In fact, it’s illegal to market CBD as a supplement or add it to food.) Therefore, it’s best to consult a doctor with experience in CBD administration to determine your ideal dosage.
Expressed in milligrams (mg), CBD dosage largely depends on the conditions and symptoms you’re trying to treat and your unique endocannabinoid system, which is associated with motor control, behavior, emotions, the nervous system and homeostasis. CBD dosage remains an area of active research—more large, high-quality studies are needed in different populations to determine appropriate dosing, efficacy and safety guidelines.
“It’s best to start small and gradually increase your dose up to a level that gives you the desired effect,” says Cheryl Bugailiskis, M.D., a cannabis specialist at Heally, a telehealth platform for alternative medicine. Your starting point might look like half a CBD gummy or a drop of oil. Ideally, navigate this process under the guidance of a qualified physician.
If you’re still not sure where to start, mydosage.com offers a questionnaire and CBD calculator to help you based on your specific symptoms and usage goals.
How to Calculate CBD Dosage
When you consume CBD gummies, capsules or softgels, dosage is typically expressed per unit. For example, there may be 50 milligrams of CBD in each individual gummy. These products don’t offer much dosage flexibility since you can’t split up capsules easily. For instance, if one softgel capsule didn’t provide your desired result, you would have to take another full capsule, doubling the total dose.
CBD oil, on the other hand, makes it easier, to begin with a small dose. But calculating CBD oil dosage can be less straightforward. Oils and tinctures tend to come in a dropper bottle and, typically, only the total liquid volume and CBD contents are listed on the label. For example, the label might simply state there’s 1,500 milligrams of CBD in the 30-milliliter bottle.
But what does 1 milliliter look like? Due to the current lack of regulation of CBD, this calculation can be tricky. Start by figuring out the volume of a single drop in your dropper, which is usually 0.05 milliliters, according to Dr. Bugailiskis. If you’re unsure, ask the company.
Here’s where math comes in. Let’s continue with the 30-milliliter bottle with 1,500 milligrams of CBD and 0.05 milliliters in a single drop as our example.
1500mg÷30mL = 50 mg/mL
This bottle contains 50 milligrams of CBD per milliliter. Let’s see how many milligrams are in a drop:
50mg/mL ×0.05mL/drop = 2.5mg/drop
Each drop contains 2.5 milligrams of CBD.
Next, you can calculate how many drops you need to reach your goal dosage. Let’s say you want to consume 25 milligrams each day.
25mg÷2.5mg/drop = 10 drops
10 drops ×2.5mg = 0.5mL
With this CBD oil dosage calculator as your guide, you would find that you needed to consume 10 drops, or 0.5 milliliters, to reach 25 milligrams. And if you intend to consume 25 milligrams daily, you can expect this particular bottle to serve as a 60-day supply.
Some CBD products do some of this math for you and illustrate how many milligrams are in a milliliter, some even marking these points on the dropper so you know exactly what you’re taking.
CBD Dosage for Different Ailments
Without FDA approval, there is little guidance in the U.S. on how much CBD a person should consume for various conditions.
In many medical studies on CBD, you see administered doses reach hundreds of milligrams a day, which sounds severe compared to our starting dosage example of 25 milligrams. However, Steven Phan, founder of Come Back Daily, a CBD dispensary in New York, points out that patients in these studies are often dealing with serious flare-ups and pain-inducing conditions compared to everyday dispensary customers.
Below are clinically-studied CBD dosages based on different ailments and conditions. Note: Some of the formulations studied contained THC as well—not all available dosage research sticks strictly to CBD.
*Dosages are based solely on small, short-term clinical study results where CBD proved significantly successful over placebo. Much larger studies are needed to further strengthen the evidence.
FDA-approved Epidiolex administers CBD orally as a liquid to treat seizures associated with Lennox-Gastaut syndrome, Dravet syndrome and tuberous sclerosis complex. The dosage of Epidiolex is determined by taking the patient’s weight in kilograms (kg) into account.
Several countries, including Canada and those in the U.K., have approved the use of Sativex, an oral spray with equal amounts of CBD and THC, to treat pain stemming from multiple sclerosis. Canada has also approved it for treatment of cancer pain.
The medical and research community still has a long way to go before figuring out what dose works best for each condition. At an individual level, consumers can experiment with caution until they find what works best for them.
Partner Offers feature brands who paid Forbes Health to appear at the top of our list. While this may influence where their products or services appear on our site, it in no way affects our ratings, which are based on thorough research, solid methodologies and expert advice. Our partners cannot pay us to guarantee favorable reviews of their products or services
Medterra Isolate CBD Oil
How to Take CBD
Popular ways to take CBD include:
- Oils and tinctures (extracts of plant material dissolved in ethanol): A liquid that comes in a bottle with a dropper
- Gummies: A soft, chewable candy that’s often fruit-flavored
- Sprays: A liquid that comes in a bottle with a nozzle for spraying into the mouth
- Capsules: Tablets or softgels that are ingested by mouth
- Vapes: CBD oil that’s heated without ignition, resulting in an inhalable vapor
- Flower: Dried hemp plant that’s often ignited and smoked
- Edibles: Any food that CBD oil has been added to, such as brownies or chips
- Drinks: Any beverage that’s infused with CBD, often in the form of hemp extract
Your CBD product of choice will largely depend on your personal preferences, as well as your budget since prices vary depending on the potency of ingredients and manufacturing processes. Different mediums also offer varying levels of bioavailability—or how much of what you take is actually absorbed into your bloodstream to have an effect. For example, if you ingest 10 milligrams of CBD via 1 milliliter of liquid, your body might absorb about 60% of it, or about 6 milligrams.
Cannabinoids generally have a low bioavailability compared to other substances, according to Jordan Tishler, M.D., a physician specializing in cannabis treatment in Massachusetts. However, “products that contain emulsifiers like egg yolk (brownies) or lecithin (some gummies) do better,” he says.
With that said, ingesting CBD via gummies or other edibles may take longer to take effect since the CBD has to travel to your digestive system to be broken down and absorbed.
Can You Take Too Much CBD?
Like with any substance, you can take more CBD than your body can handle. Studies show doses up to 1,500 milligrams a day have been well-tolerated, but every person is different  Bergamaschi MM, Costa Queiroz RH, Zuardi AW, Crippa JAS. Safety and side effects of cannabidiol, a Cannabis sativa constituent. Current Drug Safety. 2011;6(4):237-49. . Ingesting too much CBD can cause unpleasant side effects, such as dry mouth, nausea, diarrhea, upset stomach, drowsiness, lightheadedness and general disorientation. While rare, liver damage can also occur.
What’s more, CBD can have serious interactions with certain medications. In evaluating available information on five prescription CBD-based medications, researchers found 139 medications could have a potential drug-drug interaction with CBD  Kocis PT, Vrana KE. Delta-9-Tetrahydrocannabinol and Cannabidiol Drug-Drug Interactions. Medical Cannabis and Cannabinoids. 2020;3:61–73. . People who take certain blood thinners, heart rhythm medications, thyroid medications and seizure medications need to be particularly careful.
At the end of the day, not all supplements are created equal, which is why it’s important to work alongside a health care provider when adding CBD to your wellness regimen and research reliable brands. And while emerging research and anecdotal evidence is promising, more large, randomized-controlled trials are needed to further understand the benefits of CBD and its dosing.