What does Ashwagandha Extract do?

Adaptogenic herb shown to reduce stress, improve sleep quality, and support memory in clinical trials.

Is Ashwagandha Extract safe?

High-dose, long-term use (approx. 950 mg/day for over a year) has been linked to HPA axis suppression and adrenal insufficiency in a documented case report — this is a serious hormonal side effect

Ashwagandha Extract - Science-Based Research

What the Science Says

Ashwagandha is a root extract from the Withania somnifera plant, used for centuries in Ayurvedic medicine as a stress-relieving adaptogen. Clinical trials show it meaningfully reduces perceived stress at doses as low as 125 mg/day by modulating the body's stress hormone system (HPA axis), and improves sleep quality — including how fast you fall asleep and how long you stay asleep — at 120 mg/day over 6 weeks. Smaller trials also suggest it may support memory and cognitive function in people with mild cognitive impairment, and reduce joint stiffness in knee osteoarthritis.

What It Doesn't Do

Won't make elite athletes faster or stronger beyond what training alone achieves — an 8-week trial in national-level wrestlers found no added benefit over training. Not a proven Alzheimer's treatment; mouse model data is very early and doesn't translate directly to humans. Not a replacement for medical treatment of anxiety disorders or sleep disorders. The 'natural equals safe' claim is false — high doses taken long-term have caused serious hormonal disruption in at least one documented case.

Evidence-Based Benefits

Ashwagandha is a root extract from the Withania somnifera plant, used for centuries in Ayurvedic medicine as a stress-relieving adaptogen. Clinical trials show it meaningfully reduces perceived stress at doses as low as 125 mg/day by modulating the body's stress hormone system (HPA axis), and improves sleep quality — including how fast you fall asleep and how long you stay asleep — at 120 mg/day over 6 weeks. Smaller trials also suggest it may support memory and cognitive function in people with mild cognitive impairment, and reduce joint stiffness in knee osteoarthritis.

Moderate Evidence

Effective at: 120-600 mg daily based on study doses

Source: auto-research

Absorption & Bioavailability

Unknown — no pharmacokinetic studies were included in the provided papers. Different extract formulations (aqueous, ethanolic, standardized) are used across studies, making direct comparisons difficult.

Red Flags to Watch For

High-dose, long-term use (approx. 950 mg/day for over a year) has been linked to HPA axis suppression and adrenal insufficiency in a documented case report — this is a serious hormonal side effect
Most clinical trials are short-term (6–12 weeks); long-term safety beyond this window is not well established
Many studies use proprietary branded extracts (Shoden, Somin-On, KSM-66) — results may not apply to generic or unverified products
Paper 1's SAH-lowering result used ashwagandha in a multi-ingredient formula with alpha-GPC and creatine — you cannot attribute the effect to ashwagandha alone
Geographic origin and extraction method significantly affect chemical composition — Egyptian and Indian extracts have meaningfully different phytochemical profiles, so product sourcing matters