Ashwagandha

What Is Ashwagandha?

Ashwagandha (Withania somnifera) is an adaptogenic herb used in Ayurvedic medicine for thousands of years. In the fitness world, it has gained popularity for its potential to reduce stress hormones, improve recovery, and even support modest strength gains. The most researched form is the KSM-66 root extract.

How It Works

Ashwagandha is classified as an adaptogen — a substance that helps the body manage stress. It appears to modulate the hypothalamic-pituitary-adrenal (HPA) axis, reducing cortisol output. Since chronically elevated cortisol can impair recovery, muscle growth, and sleep, lowering it could have knock-on benefits for training outcomes.

What the Research Says

Several randomised controlled trials show that ashwagandha supplementation (300-600mg KSM-66 daily) can significantly reduce cortisol levels and self-reported stress. Some studies have also found improvements in VO2 max, strength, and body composition — though the effect sizes are modest and more research is needed. Sleep quality improvements have been noted in multiple trials, which could indirectly benefit recovery.

The evidence is promising but not conclusive. It is not in the same league as creatine or protein for direct performance benefits, but it may help if stress or poor sleep are holding back your training.

Who Should Take It

People dealing with high stress, poor sleep, or elevated cortisol who want a natural support alongside good lifestyle habits. It is not a magic pill — if you are sleeping 5 hours a night and running on caffeine, fixing those basics will do far more than any supplement.

Who Should Avoid It

Pregnant or breastfeeding women should avoid ashwagandha. If you take thyroid medication, consult your doctor first — ashwagandha may alter thyroid hormone levels. Some people report drowsiness, so evening dosing may be preferable if this affects you.

Long-Term Use

Most studies run for 8-12 weeks. There is limited data on long-term use beyond this, so cycling (8 weeks on, 2-4 weeks off) is a reasonable precaution until more data is available.

Vegan?

Ashwagandha is vegan-friendly — it is a plant root extract. Check the capsule material if buying capsules; look for ones using plant-based (HPMC) shells rather than gelatin.

Where to Buy

• Bulk KSM-66 Ashwagandha — from £9.99
• Amazon — Nutravita Ashwagandha KSM-66 — from £12.99
• Myprotein Ashwagandha Capsules — from £10.99

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