The correct dosage of CBD you can take is personal, but 20 to 40 mg of CBD is enough. You can take more without harm because of tolerance to CBD, metabolism, and body weight. The effect of CBD is different among individuals. Sometimes the doctor can give you the amount of CBD to take. This article considers the right quantity that might help you.

CBD products like gummies and oils have become a norm over the past few years, probably due to the 2018 farm bill. The farm bill allowed the growing of industrial hemp. The high usage of CBD products can also be due to the many claimed benefits of CBD. The CBD market will be worth billions of dollars in the next decade. Unlike prescription drugs, CBD is not standardized; thus, its dosage can be a challenge. When you have taken CBD, you should feel an effect that will wear off after some hours, which is not the case with prescription drugs. Keep reading to find out the ins and outs of CBD dosage.


Cannabidiol (CBD) is a compound in cannabis plants like hemp and marijuana. The processing of CBD hemp plant is used because marijuana is illegal and is not rich in CBD like the hemp plant. Solvent extraction and alcohol extraction are the major processes used in the industrial production of CBD. The extracted CBD is further processed into the full-spectrum, the broad-spectrum, and the isolate CBD bases. These bases are used in processing CBD products like gummies, oils, tinctures, capsules, and balms. The full spectrum has all the hemp plant terpenes, including THC. The broad spectrum has all the terpenes except THC, while the isolate CBD is pure. THC is a compound found abundantly in marijuana and induces a high feeling. In hemp plants, it is not enough to cause any reaction.


It is processed into various products like CBD oil to make CBD bioavailable. CBD oil is made by mixing CBD with a carrier oil like olive oil. The carrier oil preserves the CBD while increasing its bioavailability of CBD. The common ways of taking CBD are inhalation, ingestion, sublingual, and topical. The inhalation method involves inhaling CBD using a vape pen or smoking hemp plant leaves, flowers, and buds. CBD enters the system through the lungs. The ingestion method is when the CBD product undergoes metabolism before it is absorbed into the bloodstream. The ingestion method involves eating CBD gummies or swallowing capsules. The sublingual method consists in placing CBD oil drops under the tongue and holding them there for absorption. The topical method uses CDB products for external use and involves applying a CBD product like balm to the skin.

The rate at which you will feel the effect of CBD also depends on the method of taking CBD used. In the inhalation method, you will feel the result after 20 minutes, lasting 2 hours. The effect of ingestion will be felt after 4 hours and will last for 8 hours. For the sublingual method, the result will be felt after 40 minutes and lasts for 4 hours, while that of the topical way will be felt after 4-5 hours and can last 8-10 hours.


The effect of CBD is affected by tolerance to CBD, metabolism, and body weight of an individual. How CBD affects a person will be different if another person takes the same amount of CBD. CBD binds with ECS receptors; this can take time since they depend on saturation. Finding the right dose will take time, maybe weeks. For new CBD users, or if CBD seems like it’s not working for you, try to start with a smaller dose and gradually increase it to build saturation to obtain your optimal amount.


Taking CBD does not have fatal side effects, but you may experience some effects like dry mouth, dizziness, nausea, vomiting, and changes in appetite. These symptoms can be relieved at home, but if they persist, visit the ER and bring along the CBD product you used. You can also check if the ingredients used in the CBD products are safe for you in case you are allergic. Brown & Winterstein (2022) noted that CBD interacts with medications, so it is recommended that you inform your doctor that you are using or intend to use CBD products. It is impossible to overdose on CBD products but always keep medication and supplements away from children.



CBD binds with ECS receptors to prevent melatonin from breaking. Moon et al. (2022) revealed that melatonin is released according to the body’s circadian biological clock that controls the sleep-wake cycle. Soothing anxiety and stress can relax the body. Stress is a common cause of insomnia.


The ECS neurotransmitter serotonin is responsible for body functions like mood and appetite. Moncrieff et al. (2022) concluded that low serotonin levels are associated with feelings of depression, stress, and anxiety. Using CBD, the rate of serotonin breakdown is reduced, thus resulting in a good mood.


Peyravian et al. (2022) noted that CBD has inflammatory properties that can reduce swelling and acne. CBD relieves pain by reducing the rate of serotonin breakdown. CBD for pain and inflammation works best when used as a topical.


CBD promotes weight loss by speeding metabolism, reducing appetite, and browning fats. Browning of fats is when the body uses the energy stored in the form of white fats.


CBD is legal in the USA but should not have more than 0.3% THC. Most USA states have fully legalized CBD, and some have restrictions. In Europe, the trend is almost the same, but the THC levels should not exceed 0.2% in most countries and 0.0% in France. Countries like Norway have legalized CBD for medicinal use only. Legalizing CBD does not make marijuana legal. Marijuana is still illegal in many jurisdictions.


There is no specific amount of CBD to take. CBD doses depend on individuals’ tolerance to CBD, body weight, and metabolism. You can achieve your optimal dose by starting with a small amount and gradually increasing it. CBD does not have any fatal side effects but interacts with medications. The claimed benefits of CBD are aiding sleep, soothing stress and anxiety, relieving pain and inflammation, and regulating body weight. CBD is legal in most jurisdictions if it has not more than 0.3% THC. THC levels are tested by third-party labs and published on the products’ COA found on the company’s website.


Brown, J. D., & Winterstein, A. G. (2019). Potential Adverse Drug Events and Drug–Drug Interactions with Medical and Consumer Cannabidiol (CBD) Use. Journal of Clinical Medicine, 8(7).

Moncrieff, J., Cooper, R. E., Stockmann, T., Amendola, S., Hengartner, M. P., & Horowitz, M. A. (2022). The serotonin theory of depression: a systematic umbrella review of the evidence. Molecular psychiatry, 1-14.

Moon, E., Partonen, T., Beaulieu, S., & Linnaranta, O. (2022). Melatonergic agents influence the sleep-wake and circadian rhythms in healthy and psychiatric participants: a systematic review and meta-analysis of randomized controlled trials. Neuropsychopharmacology, 1-14.Peyravian, N., Deo, S., Daunert, S., & Jimenez, J. J. (2022). The Anti-Inflammatory Effects of Cannabidiol (CBD) on Acne. Journal of Inflammation Research, 15, 2795.

Charlotte Cremers
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MS, University of Tartu
Sleep specialist

Using the acquired academic and professional experience, I advise patients with various complaints about mental health - depressed mood, nervousness, lack of energy and interest, sleep disorders, panic attacks, obsessive thoughts and anxieties, difficulty concentrating, and stress. In my free time, I love to paint and go on long walks on the beach. One of my latest obsessions is sudoku – a wonderful activity to calm an unease mind.

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