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Are there any side effects of CBD oil?

  • Published August 24, 2026

CBD oil is generally well-tolerated by most people. However, it can cause side effects, particularly when taken at higher doses.

Common Side Effects

  • Gastrointestinal disturbances (diarrhea, nausea, or decreased appetite)
  • Fatigue or drowsiness, especially at high doses
  • Dry mouth due to reduced saliva production
  • Dizziness or lightheadedness, possibly linked to blood pressure changes

A comprehensive 2022 systematic review published in Pharmaceuticals evaluated data from 12 clinical trials and found that “the most common adverse effects were gastrointestinal (e.g., diarrhea), somnolence, and changes in liver enzyme levels. Consulting a healthcare provider before starting CBD is advised.

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