Precautions

Use caution if you have a thyroid condition or take thyroid hormone (such as thyroxine): Ashwagandha may affect thyroid function and increase the medicine's effects. Use caution if you take immunosuppressant medicines, as Ashwagandha may reduce their effect. Ashwagandha may add to the effects of medicines for blood sugar and blood pressure, and of benzodiazepines and other sedatives. Avoid Ashwagandha during pregnancy and while breastfeeding. In very rare cases, liver injury has been reported with Ashwagandha. Avoid it if you have, or have had, liver problems. Stop taking it and seek medical advice if you notice yellowing of the skin or eyes, dark urine, nausea, unusual tiredness or abdominal pain.

Precautions

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References

<http://www.pfaf.org/user/Plant.aspx?LatinName=Withania+somnifera>

<http://www.livestrong.com/article/159038-the-truth-about-ashwagandha-herbs/>

Michael Tierra (1988), Planetary Herbology, pp. 309, Image: by JMK (Own work) CC BY-SA 3.0 via Wikimedia Commons