St. John's Wort Interactions: Serotonin Syndrome
Combining medications that increase the level or activity of serotonin can increase the risk of serotonin syndrome, a serious group of symptoms that include:
- Confusion
- Hallucinations
- A rapid heart rate (tachycardia)
- Feeling faint
- Fever
- Sweating
- Muscle spasms
- Difficulty walking
- Diarrhea.
Serotonin syndrome can be life-threatening. The risk of serotonin syndrome may be increased if
St. John's wort is combined with any of the following medications:
Final Thoughts on St. John's Wort Drug Interactions
Not all St. John's wort drug interactions were discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about the specific drug interactions that may apply to you. If you take any medications or supplements, check with your healthcare provider before taking St. John's wort, as this supplement is likely to interact with many different medications.