What are the most common side effects caused by Ashwagandha?

The most common known side effects caused by Ashwagandha are diarrhea, upset stomach and vomiting, according to WebMD. These side effects generally occur due to large doses.

The long-term health effects of ashwagandha are unknown, according to WebMD. Ashwagandha appears to be safe when taken in appropriate doses short term. More research is needed to determine its effectiveness.

Individuals who should not use ashwagandha are those who have stomach ulcers, are pregnant or breast-feeding, are about to have surgery, or have an auto-immune disease, according to WebMD. Individuals who should be cautious when using ashwagandha are those with diabetes, thyroid disorders or abnormal blood pressure.