Ashwagandha and creatine: what the evidence says about each

No trial has tested ashwagandha and creatine taken together. Both have separate evidence for strength and exercise performance, but creatine's research base is far larger and more consistent — decades of trials versus a smaller, more mixed ashwagandha literature — and nothing has measured what combining them does beyond either alone.

What the evidence doesn't support

It doesn't support a claim that ashwagandha adds to creatine's effect on strength, power or muscle, or the reverse — that combination hasn't been studied. It doesn't support treating the two as interchangeable; they're different categories of supplement with very different amounts of supporting research. And it doesn't support any claim about ashwagandha and creatine together for recovery, energy or performance beyond what's shown for either one separately.

What the trials found

Creatine's evidence for strength and power is among the largest in sports nutrition. A 2025 meta-analysis of 69 studies found creatine combined with resistance training improved bench press, squat strength, and jump and sprint power overall, though not every measure (handgrip and leg press showed no significant effect), with more consistent gains in younger adults and men than in older adults and women.

Ashwagandha's exercise evidence is smaller and more varied in dose and form. A systematic review and meta-analysis of 12 trials in healthy men and women found ashwagandha supplementation more effective than placebo for measures related to physical performance — strength/power, cardiorespiratory fitness, and fatigue/recovery — though the authors noted a low-to-moderate risk of bias across the included trials and called for more comparable studies, particularly in athletic populations, before drawing firm conclusions. The trials in that review used a range of doses and forms (mostly extracts), not a single standardized amount.

Neither literature has tested the two ingredients given together, so there's no data on whether stacking them changes either one's effect.

Questions people ask

Can you take ashwagandha and creatine together?

No trial has tested that combination, so there's no research-based answer on whether it adds anything beyond taking either alone. Each has its own separate safety profile to consider — see creatine side effects and ashwagandha and medications: what to check.

Is ashwagandha as well studied as creatine for strength?

No. Creatine's strength and power research spans decades and dozens of meta-analyses; ashwagandha's is a smaller, more recent literature — a 12-trial meta-analysis is the largest synthesis currently available, and the review authors themselves called for more research before drawing firm conclusions.

Should I replace creatine with ashwagandha, or vice versa?

They aren't studied as substitutes for each other, and this page doesn't rank one against the other. They're different supplement categories with different amounts of supporting evidence, and nothing here recommends choosing one over the other.

When to talk to a doctor

If you take medication, are pregnant or nursing, or have an existing kidney or liver condition, check with a doctor before adding either supplement, and particularly before combining them. Neither is a treatment for any diagnosed condition.

Related reading: ashwagandha: what the research does and doesn't show, creatine benefits: what the research does and doesn't show, and creatine dosage.