Supplement Scholar
Herb

Ashwagandha (Strength)

Buy on Amazon ↗

Affiliate link: we may earn a commission at no extra cost to you. Disclosures

Ashwagandha (Strength). KSM-66 dose for resistance training adaptations.

How it works. Reduces cortisol and supports anabolic environment.

What the research supports. 1 graded claims. Strongest: Increases muscle strength and size with training (moderate).

How much to take. Typical dose: 600 mg KSM-66.

Side effects and interactions. 1 medication interaction listed. No serious side effects listed at normal doses.

Stacking. Pairs well with Creatine monohydrate, Whey or EAAs.

Common forms. Available as Standardized extract capsule, Liquid tincture (alcohol or glycerin), Powdered whole herb, Traditional decoction or tea.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Ashwagandha (Strength). Anecdotes are not medical advice.

Ashwagandha (Strength). KSM-66 dose for resistance training adaptations.

Key compound: withaferin AC28H38O6 · 470.6 g/mol

What it is

KSM-66 dose for resistance training adaptations.

Food sources

Whole dried plant material (root, leaf, flower, or aerial parts depending on the species)Standardized hydroethanolic or aqueous extract (capsule, tincture, or tea)Powdered traditional preparation used in Ayurvedic, TCM, or Western herbal practice

Goals

Muscle GrowthAthletic PerformanceTestosterone Support

How it works

Reduces cortisol and supports anabolic environment.

Pathways

  • Reduces cortisol
  • supports anabolic environment

Effects

  • ↑muscle strength and size with training increases

What the research supports

Increases muscle strength and size with trainingmoderate

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
600 mg KSM-66
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodWith meals
Best formMost evidence is based on the standardized extract capsule form.
Shop Ashwagandha (Strength) on Amazon ↗

As an Amazon Associate I earn from qualifying purchases. Look for USP, NSF or Informed Sport seals before you buy.

Side effects & interactions

Common side effects

  • GI upset

Medication interactions

Prescription medications (general)minor

Always disclose Ashwagandha (Strength) use to your prescriber — additive, antagonistic, or pharmacokinetic interactions are possible.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • Creatine monohydrateFoundational support for strength, power, and lean mass.
  • Whey or EAAsProvides amino acid substrate for muscle protein synthesis.

Common forms

  • Standardized extract capsule
  • Liquid tincture (alcohol or glycerin)
  • Powdered whole herb
  • Traditional decoction or tea

Key studies

8 studies cited in total.

PubMed: Ashwagandha (Strength) — Increases muscle strength and size with training ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Ashwagandha (Strength) and "Increases muscle strength and size with training". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Ashwagandha (Strength) — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Ashwagandha (Strength) and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Ashwagandha (Strength) — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Ashwagandha (Strength) and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

Discussion

Loading discussion…