Ashwagandha Supplement Guide

Our assessment

The evidence shows that ashwagandha is a well-studied herb for stress management. Our assessment: it works by directly targeting your body's stress response system, making it a strong option for those seeking an adaptogenic supplement. However, you need to be aware of the specific side effects reported to the FDA.

How it works

Think of ashwagandha as a stress regulator. It works through three key mechanisms: HPA axis modulation, which helps calm your hypothalamic–pituitary–adrenal stress response; cortisol regulation, which helps normalize cortisol output under stress; and an adaptogenic response, which enhances your resilience to physical and emotional stress NIH ODS ↗.

Safety profile

FDA received 1,307 adverse event reports for ashwagandha. The most common side effects include diarrhea (reported 34 times), nausea (reported 30 times), and vomiting (reported 17 times) FDA FAERS ↗. Data on long-term safety beyond these reports is not available.

Our recommendation

Start with a low dose and monitor how you feel, especially your digestive system. Because of the reported side effects, we recommend taking it with food to reduce the risk of nausea or diarrhea FDA FAERS ↗. If you have a thyroid condition or are pregnant, consult your doctor before use, as data on these specific populations is not available.