What are the side effects of CBD oil, person rubbing eyes and taking off glasses

What are the Side Effects of CBD Oil?

CBD oil, primarily composed of cannabidiol (CBD), is derived from industrial hemp plants. Celebrated for its potential therapeutic attributes, it’s gained significant attention across health and wellness spheres.

While the surge in CBD oil usage can be attributed to its purported benefits, questions about its safety and potential side effects abound. Let’s delve deeper.

Does CBD have any Negative Side Effects?

CBD oil is predominantly deemed safe, with severe side effects being infrequent when consumed as directed. Nevertheless, like any substance, individuals might experience mild side effects. Here’s a brief overview:

  • Dry mouth

While rare, interaction with the body’s endocannabinoid system can lead CBD to alter the production and consistency of saliva, resulting in a dry mouth sensation. Drinking water and/or chewing sugar-free gum can help counter this sensation.

  • Gastric Upset

While unlikely, some individuals might experience digestive issues like diarrhea, nausea, or stomach cramps upon CBD oil ingestion.

  • Low blood pressure

A transient drop in blood pressure might occur post-CBD consumption. However, for some, this can be seen as a therapeutic effect, especially for those with hypertension.

  • Lightheadedness and Drowsiness

Certain individuals may also experience mild dizziness or a brief sensation of lightheadedness after consuming CBD oil.

Although the exact mechanism is not entirely understood yet, experts attribute these uncommon side effects to the alterations in the blood flow to the brain, autonomic nervous system activation, low blood pressure, or fluctuation in the brain signaling secondary to the intake of CBD.

  • Reduced appetite

CBD also leads to the suppression of appetite in some people. While the effect is deemed beneficial for people trying to lose weight, it can potentially lead to unintended weight loss and insufficient caloric intake for others.

  • Potential liver impact

Some studies have also reported that excessive CBD consumption might lead to elevated liver enzymes, indicating potential liver stress or damage. However, it only happens when too much CBD has been consumed or taken with certain medications.

Is it Healthy to take CBD Oil Every Day?

Some people take it every day as a part of their daily wellness routine, while others use it intermittently. A study has claimed that taking as much as 1500 mg of CBD daily is well-tolerated.  So, you can take CBD oil every day but it is recommended to stay within the recommended CBD amount limits.

However, the data regarding the safety and the long-term effects of using CBD oil daily is limited. Besides, its recommended amount is not currently regulated by the FDA (Food and Drug Administration). Therefore, it is recommended to consult a doctor before taking CBD oil. He or she will rule out any contraindications and prescribe the correct amount for you as per your body’s needs.

Is CBD Oil Safe?

According to the World Health Organization (WHO) report, CBD oil is generally well-tolerated and has a good safety profile. Millions of people take CBD safely each day.

While not common, some people may experience mild adverse effects that are associated with using CBD oil. Moreover, interactions have been reported when CBD is taken with certain medications and substances. Therefore, for a personalized understanding of CBD oil and its effects, it’s prudent to consult a healthcare provider.


CBD oil, while generally considered safe, might exhibit some mild side effects. As with any health supplement, understanding one’s body and staying informed is crucial. Before diving into the world of CBD, seeking advice from a medical professional can provide clarity and assurance.


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2. Andreis K, Billingsley J, Naimi Shirazi K, Wager-Miller J, Johnson C, Bradshaw H, Straiker A. Cannabinoid CB1 receptors regulate salivation. Scientific Reports. 2022 Aug 19;12(1):14182.

3. LiverTox: Clinical and Research Information on Drug-Induced Liver Injury [Internet]. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases; 2012-. Cannabidiol. [Updated 2023 Feb 16]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK548890/

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