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What are the Side Effects of CBD Oil?

What are the Side Effects of CBD Oil?

CBD oil is becoming increasingly popular amongst people looking for natural options to manage their conditions. It’s also gaining popularity as a “wellness” product that can improve your overall health, including your appearance and mood. However, there are some side effects of CBD oil and other products that you should be aware of before starting to use.

Side Effects of CBD Oil

The following are some of the most common CBD side effects that have been reported in connection with CBD oil:

  • Diarrhea
  • Drowsiness
  • Dry Mouth
  • Nausea and vomiting


CBD oil is known to cause diarrhea. In a 2019 study on a CBD-based drug Epidiolex, diarrhea was the common side effect amongst the participants. However, this side effect depends on the individual’s body chemistry and medical health record.

If you experience diarrhea from your CBD intake, you should reduce the amount of CBD you take.

It’s important to note that if diarrhea is persistent for more than two days or becomes severe enough to cause dehydration and other serious health problems, then it may be time to consult with a doctor about other treatment options.


Drowsiness is considered a side effect and a benefit. It affects the brain in a way that makes you feel relaxed and sleepy. The drowsy feeling may cause you to fall asleep if you take too much CBD at once.

Drowsiness is more likely to happen when using high-dose CBD products. If you are taking CBD sleep gummies, be aware that this could cause drowsiness in some people. If you have trouble sleeping already or suffer from sleep apnea (a condition where breathing becomes difficult during sleep), talk to your doctor before using CBD products.

If you’re planning on driving or operating heavy machinery after taking CBD oil, it’s best not to mix the two.

Dry Mouth

A dry mouth, also called a “cotton mouth,” results from CBD oil inhibiting your body’s ability to produce saliva, which helps moisten your mouth and prevent infections such as cavities. Dry eyes commonly accompany the condition.

Does CBD make you thirsty?

CBD oil doesn’t make you thirsty, despite causing a dry mouth. However, to deal with cottonmouth condition, drink more water throughout the day to help keep your mouth moist as it may reduce discomfort.

Nausea and vomiting

Negative side effects of CBD gummies may include nausea and vomiting. However, CBD headache and nausea are usually mild. But if they’re more severe or don’t go away, you should talk to your doctor about it. If CBD nausea is a problem for you when taking CBD oil, try taking it with food to see if that helps.

CBD side effects are generally mild. Hence, taking CBD products like gummies for sleep is generally safe and well tolerated.

Interaction with Medication

Like CBD oil, drugs are broken down and synthesized in the liver. Taking CBD with medication will result in both competing with the enzymes. CBD may also interfere with the enzymes, resulting in insufficient or too much of the drug getting into your bloodstream, a condition called altered concentration.

The altered concentration may result in an increased risk of side effects or inefficiency of medications and rare cases, serious problems. Talk to your doctor before taking CBD products if you are using prescribed medicine.

Wrap Up on CBD Side Effects 


Koi CBD and other trusted and reputable brands offer high-quality CBD that may help you achieve your wellness goals. If you decide to use CBD oil, it is essential to know there may be some side effects. However, most of these are mild and will pass quickly as your body gets used to the substance.

As with any new drug or supplement, talk to your doctor about potential risks before starting treatment.


Michael Levin is a CBD enthusiast, a researcher, writer and editor in the cannabis space, experienced CBD user and educator. He believes CBD can help improve our overall health and wellbeing.



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