Ashwagandha (Withania somnifera) is sold for stress, sleep, and anxiety. Those are different outcomes: an improvement in stress does not establish a treatment for an anxiety disorder.
What does the evidence show?
A 2022 meta-analysis found benefits, but rated the evidence as low certainty. The NCCIH overview describes possible benefits for stress and insomnia while noting that effects on anxiety remain unclear. Many studies are small and use different preparations. This is a reason for cautious expectations, not a promise that a supplement will work for you.
Dose, extracts, and timing
Root extracts, leaf extracts, and mixtures are not interchangeable. The milligram number on a label alone does not make two products equivalent. The evidence above does not establish a universal dose, a best brand, or a reliable week-by-week response schedule for anxiety. Discuss the exact product and your medications with a clinician or pharmacist rather than following a generic dosing plan.
Safety matters
According to NCCIH, long-term safety is uncertain. Side effects can include drowsiness and digestive upset; liver injury has also been reported. Avoid use during pregnancy and breastfeeding. Thyroid or autoimmune conditions, upcoming surgery, and medication interactions need particular attention. Review the safety guidance before deciding whether to take it.
What tracking can tell you
An anxiety journal can help you record symptoms, sleep, and changes to discuss with a professional. Improvement after starting a supplement does not by itself show that the supplement caused it. Tracking is not a diagnosis or a substitute for treatment.
General information, not individual medical advice.