CBD Dosage: How Much Should You Take?
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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.
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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.
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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.
CBD Dosage: What’s the Right Dose of CBD for Pain Relief?
Take a look at the label on any over-the-counter pain reliever and you can easily figure out how much you’re supposed to take for your symptoms. Finding the right dose of cannabidiol (CBD) for pain relief, however, isn’t that simple.
Enthusiasts rave about CBD’s potential to ease pain, reduce inflammation, relieve anxiety and promote sleep. However, there’s no conclusive research about just how much CBD a person needs to take in order to experience benefits.
There are very few human studies on CBD, and those that have been done include doses that are all over the map: In some studies, patients used 5 mg of CBD; in others, they took as much as 600 mg. To further add to the confusion, CBD comes in a number of forms — oils and tinctures, creams and lotions, pills, vaping, and edibles — and each one has differences in terms of bioavailability (the percent of active ingredient that gets into your bloodstream).
“There are no standard doses for patients,” says Rachna Patel, DO, a physician who does consultations about medical marijuana and CBD and sells her own line of CBD products. “Ultimately, it’s trial and error, but you have to go about it in a methodical way.”
Here are some tips to guide you on how to find the right CBD dosage for your pain relief and other symptoms.
1. Work with an expert
Many factors, such as your body mass index (BMI), specific health condition(s) you have, medications you take, your health history, and the form of CBD you plan to use can influence how much CBD you may need to treat your symptoms. Although CBD is different than medical marijuana — which contains CBD as well as THC, an intoxicating ingredient — a doctor who’s well-versed in cannabis (marijuana) is probably the best person to help you help you sort it out.
“I wouldn’t recommend starting CBD without the supervision of a physician,” says Dr. Patel, author of The CBD Solution. “Many times people purchase a CBD product, try a dose that that doesn’t work for them, switch products and spin their wheels. Or, worse, they develop side effects.”
Ask your rheumatologist or primary care provider to recommend an expert, or find an expert near you by searching the directory of members of the Society of Cannabis Clinicians or the database maintained by your state’s medical marijuana program (if it has one).
2. Do some math
Let’s say you and your doctor settle on a dose of 30 mg of CBD per day. Now what? The answer depends on which form of CBD you take.
Figuring out how much CBD is in capsules or gummies is simple — just read the supplement facts section on the label. (If it says 10 mg of CBD per capsule, you’d take three capsules to get your 30 mg of CBD a day.)
Oils and tinctures can be trickier because the packaging often states the amount of CBD in the entire bottle, not in a dropper. This calculator can help you figure out how many drops you need based on the strength of the product.
When it comes to CBD in topical form (creams, lotions, and salves), you’ll probably see the total amount of CBD in the container listed on the label. You’ll then have to divide that total by the number of millimeters in the package to determine how much is in each milliliter. For example, if you have a 50 ml jar of salve that contains 200 mg of CBD, there’s 4 mg per ml. You should then use a metric measuring spoon to scoop out 7.5 ml to get a 30 mg dose of CBD.
3. Expect some trial and error
No two patients respond to CBD in the same way. You and your doctor will probably need to adjust the dose either up or down until you hit the right balance of benefits without side effects. “A lot of it depends on your biochemistry and the way your liver breaks down these chemicals. There’s a wide variety of factors that come into play,” says Dr. Patel.
It can take a little while to get it right, so be patient. Many people do not see a difference in symptoms after one or two doses of CBD. It can take up to eight weeks of regular use to feel an impact, says Bridget Seritt, co-founder of the Canna-Patient Resource Connection, a Colorado-based organization that is working to protect patient rights and end stigma against those who choose cannabis as medicine.
4. If you have side effects, stop or lower the dose
CBD won’t get you high the way that cannabis with THC can, but it may still cause side effects. “The most common side effects are fatigue and lethargy, and in rare cases diarrhea,” says Dr. Patel, who notes that CBD that’s taken topically less commonly causes side effects. Topical CBD is best used to address pain in a single joint, rather than widespread pain, she adds.
No matter which form of CBD you use, pay attention to how you feel. If you notice any negative side effects, stop or lower the dose and consult your doctor.
CBD Dosage: How Much to Take for Pain, Anxiety & Sleep
This article is going to blow the doors wide-open on dosing CBD.
You’ll understand the ins and outs of dosing cannabidiol, learn how to properly measure your CBD dose with different products, and learn the important differences between dosing CBD oil for different types of symptoms.
CBD Dosage: How Much CBD Oil Should I Take?
A one-size-fits-all dosage for CBD doesn’t exist. Even the FDA doesn’t provide a Recommended Daily Intake (RDI) for CBD.
In simple terms, CBD doesn’t have an official serving size.
CBD acts on 60 different molecular pathways, meaning it has a very complex relationship with the body and the brain. It’s difficult to come up with a definite dosage guideline that would help any person regardless of individual physiology.
Some CBD manufacturers give you their own dosage recommendations, but they do so to provide new users with a general point of reference. It’s impossible to tell if a specific dosage is the right amount for a given person because it doesn’t address a few critical variables — which I’m going to discuss below.
Important Considerations For Dosing CBD
Finding an effective CBD dosage may depend on the following factors:
- The potency of the product
- The bioavailability of the chosen product
- Your unique biochemistry
- Prior experience with CBD
- Your weight
- Your metabolism
- The severity of your condition
- Other medications you’re currently taking
Nick Jikomes, an esteemed neuroscientist, says:
“As our body undergoes physiological changes, so do cannabinoid receptors in the endocannabinoid system, which are directly linked to the effects produced by CBD.”
This means that your “best CBD dosage” can change throughout your life, so there will never be a universal or static amount that works for you.
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How to Calculate the Best CBD Dosage for Your Needs
There are steps you can take to find your ideal CBD dosage for your health goals. Let’s go over the process step by step.
1. Decide What Form of CBD to Use
Currently, the most common way to deliver CBD to your system is through CBD oil drops. They’re relatively easy to use and allow you to absorb CBD directly into the bloodstream as opposed to capsules and edibles.
However, pure CBD oil has a distinct earthy taste. Some find this flavor too harsh and somewhat bitter. If you don’t like the taste of CBD oils, something like a capsule, gummy, or vape oil may be a better option.
The above routes of administration are typically preferred by people who need fast relief from anxiety, stress, pain, or inflammation.
Other popular methods include CBD edibles, capsules, and topicals. Topicals are the better option if the area you’re trying to treat is on the skin, joints, or muscles.
Remember when I mentioned the importance of the chosen consumption method on your dosage regimen?
Here’s why it matters.
2. Check the Bioavailability of Your Product
Bioavailability refers to the percentage of ingested CBD that your body absorbs into the bloodstream.
Below you’ll find the bioavailability of 4 different delivery methods:
- CBD topicals:
- CBD capsules and edibles: 5-15%
- CBD Oil drops: 20-30%
- CBD vapes: ~56%
For example, if you consume 15 mg of CBD in oral drops, you’re going to end up with 4–6 times the amount of CBD in your body than you would with a capsule containing the same concentration.
The bioavailability of CBD topicals is measured at 0% because none of the CBD applied to the skin makes it to the bloodstream. Instead, CBD reaches the cannabinoid receptors in the skin and muscles.
3. Talk to a Physician
Before taking any CBD product, I advise you to consult with a physician. This is the best way to make sure the CBD or other supplements you’re taking won’t interfere with any medications you may be taking. It’s also the best way to rule out any major causes for your symptoms before starting supplementation.
4. Start With a Lower Dose than You Think You Need
Everybody has a different history with the use of certain substances, supplements, and medications. And since we’re all made differently, what works wonders for you, might not work for your friend — and vice versa.
The best way to determine your initial CBD dosage is to count it by your body weight. Experts recommend starting with 1–6 mg of CBD per pound. Low doses allow the user to monitor their body’s reaction more effectively.
This brings us to our last tip.
5. Gradually Increase the Dosage Until You Notice the Difference
Increasing the amount of CBD oil gradually is the best way to figure out the best CBD dosage.
I recommend lower CBD doses at first because if the dose is too high, it may trigger some unwanted effects, such as sleepiness, lowered blood pressure, lightheadedness, or diarrhea. Side-effects are a cue to dial your dose back to the last one that didn’t produce these effects.
On the other hand, if you continue to use a dosage that’s too low, you may not feel anything at all, so again — observation is key. Listen to your body, you’ll soon get a feel for how CBD works for you.
How to Measure Your CBD Oil Dosage
CBD oil drops come in dropper bottles. They’re easy to use and allow you to precisely measure out your serving of CBD.
All you need to do is squeeze the dropper so it draws the oil from the bottle, apply a few drops under the tongue, and hold it there for about 60 seconds. This way, CBD will absorb into the bloodstream through sublingual membranes under the tongue.
But how do you estimate your CBD oil dosage?
To answer this, you’ll need to know how much CBD a dropper holds. Typically, a dropper can carry 1 ml of liquid. If you know the total volume of your oil drops, you can do the math and calculate your CBD dosage using a simple formula.
[Total CBD in the bottle] ÷ [Number of milliliters in the bottle] = mg of CBD in a dropper.
For example, let’s say you have a 30 ml CBD oil that has 750 mg of CBD:
750 ÷ 30 = 25 mg of CBD per ml (per dropper)
How to Measure Your CBD Vape Oil Dosage
With CBD E-liquids, you’ll need to know how much CBD is in the product. As you vape your E-liquid throughout the day, watch the tank and see how long it will work without refilling.
Dosing vape oil is better using qualitative means. The effects appear much faster than from tinctures or edibles, so you can take little puffs at a time and wait about 5 minutes between another dose to see how it’s affecting you.
Once you start feeling the effects you’re looking for, this is your dose.
If you experience side effects, it means the dose is too high, so the next time you vape, useless.
Recommended CBD Dosage for Pain, Anxiety & Sleep
As mentioned, there are some general dosage guidelines for CBD that you can use for certain conditions. After studying CBD for several decades, scientists have finally created some kind of a framework for CBD dosage. This creates a relatively good point of reference for determining the effective amount of cannabidiol.
CBD Dosage for Anxiety
Most studies have investigated the use of CBD to treat social anxiety. One of the first studies, which was replicated many times since the initial publication, points to a dosage of 40 mg of sublingual CBD as an effective treatment for social anxiety. However, specific cases of anxiety disorders may call for an increase of up to 300 mg of CBD.
CBD Dosage for Different Levels of Pain
The optimal CBD dosage for people with chronic pain ranges between 2.5–20 mg of CBD when administered orally, alongside or without THC. Certain individuals may require higher doses, especially those with a greater body mass.
CBD Dosage to Improve Sleep Quality
CBD is known for its ability to reduce stress and anxiety and mitigate both pain and inflammation.
These factors are important when it comes to maintaining proper sleep quality, but there’s also one more benefit you should be aware of. At higher doses, CBD may induce sleepiness, allowing the user to fall asleep faster without experiencing the stream of racing thoughts.
Depending on the frequency and severity of your symptoms, you may need between 25–175 mg of CBD daily to combat them.
CBD Dosage: FAQ
1. Is CBD Safe?
Yes, CBD is generally considered safe for human consumption, with no signs of toxicity at doses as high as 1,500 mg daily.
2. Can CBD Get You High?
No, CBD doesn’t act on the cannabinoid receptors in the brain as THC does. Therefore, this cannabinoid is non-intoxicating — it can’t get you high.
3. Can You Overdose on CBD?
Overdosing on cannabinoids is impossible because cannabinoids don’t affect the brain stem are responsible for respiration.
4. Does CBD Oil Have Any Side Effects?
CBD has a relatively short list of side effects, most of which are considered minor. However, in high doses, CBD can produce an array of unwanted reactions, such as:
- Dry mouth
- Lowered blood pressure and heart rate
It’s a small price to pay compared to the list of side effects caused by prescription medications.
5. What’s the Best Way to Consume CBD?
If by “the best” you mean the most efficient, then oil tinctures or vaping products will be your best options. That’s because they offer higher bioavailability than capsules and edibles.
6. Should I Take Full-Spectrum CBD or Isolate?
If you’re not subject to periodical drug tests at work, I would recommend a full-spectrum product because of something called the “entourage effect.” This term describes the synergy between all active ingredients in cannabis, including cannabinoids other than CBD and THC, terpenes, and other plant compounds. They’re believed to require less CBD than pure isolate to produce similar effects.
7. Can I Give CBD to My Dog or Cat?
Hemp-derived CBD products are safe for pets because they contain little to no THC, the intoxicating compound that produces toxicity in animals. Pets can benefit from CBD in similarly to humans.
Final Thoughts: What’s Your Optimal CBD Dosage?
The ideal CBD dosage that would work for everyone doesn’t exist. The nature of cannabidiol is very complex — so is the cannabis plant — and there are too many outside variables that can influence CBD’s absorption.
The potency of your product, its bioavailability, your weight, the severity of the condition, cannabinoid spectrum — they all matter.
You can use some general dosage guidelines for specific conditions, but always make sure you treat it as a point of reference, not the one and the only way to dose CBD.
So, what’s the best way to figure out the ideal CBD dosage?
Start low and gradually go up with the dosage until you experience the desired effects. The way you react to CBD can change over time, so you need to monitor the effects throughout your supplementation.
You should also ask a physician who’s experienced in using CBD or hemp extracts with patients to get professional guidance.
What CBD dosage is best for you? How much do you take daily? Let me know in the comments below!
Livvy is a registered nurse (RN) and board-certified nurse midwife (CNM) in the state of New Jersey. After giving birth to her newborn daughter, Livvy stepped down from her full-time position at the Children’s Hospital of New Jersey. This gave her the opportunity to spend more time writing articles on all topics related to pregnancy and prenatal care.
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