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cbd long term side effects

Wendy Rose Gould is a lifestyle reporter with over a decade of experience covering health and wellness topics.

Generally speaking, CBD is considered a safe substance when applied topically or taken orally. There are, however, some potential side effects to keep in mind when using this substance, the majority of which are mild.

Common Side Effects of CBD

In some cases, those who ingest CBD supplements might experience nausea, says Dr. Matharu-Daley. This depends on how sensitive the person is to CBD, as well as the amount they ingest.

Also known as “cotton mouth,” CBD can potentially cause your mouth and eyes to feel very dry, notes Dr. Brent A. Bauer via Mayo Clinic. Though this side effect is more likely to occur with THC, it can happen with CBD, as well.

CBD is one of the many chemical compounds that is found in the cannabis plant—referred to as cannabis sativa. There are two primary parts of the plant that humans use. One is THC, or Delta-9-Tetrahydrocannabinol, and the other is CBD. Though they’re from the same plant, THC and CBD are quite different from each other.

Serpell MG, Notcutt W, Collin C. Sativex long-term use: an open-label trial in patients with spasticity due to multiple sclerosis. J Neurol 2013;260(1):285-95. View abstract.

Consroe PF, Wokin AL. Anticonvulsant interaction of cannabidiol and ethosuximide in rats. J Pharm Pharmacol 1977;29(8):500-1. View abstract.

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Interactions ?

FDA and Marijuana: Questions and Answers. U.S. Food and Drug Administration Web site. Available at: https://www.fda.gov/NewsEvents/PublicHealthFocus/ucm421168.htm. Accessed: May 31, 2015.

Over 80 chemicals, known as cannabinoids, have been found in the Cannabis sativa plant. Delta-9-tetrahydrocannabinol (THC) is the most famous ingredient in cannabis. But CBD is obtained from hemp, a form of the Cannabis sativa plant that only contains small amounts of THC. CBD seems to have effects on some chemicals in the brain, but these are different than the effects of THC.

Notcutt W, Langford R, Davies P, et al. A placebo-controlled, parallel group, randomized withdrawal study of subjects with symptoms of spasticity due to multiple sclerosis who are receiving long-term Sativex (nabiximols). Mult Scler 2012;18(2):219-28. View abstract.

Hobbs JM, Vazquez AR, Remijan ND, et al. Evaluation of pharmacokinetics and acute anti-inflammatory potential of two oral cannabidiol preparations in healthy adults. Phytother Res. 2020;34(7):1696-1703. View abstract.