The Claim

In exercise-trained adults, supplementation with Tongkat Ali at 400 mg/day for four weeks has no effect on physiological adaptations to regular resistance and aerobic training.

Source: The Effect of Tongkat Ali Supplementation on Body Composition in Exercise-Trained Males and Females

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
61score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

Taking 400 mg of Tongkat Ali daily for four weeks does not improve the physical changes that result from regular resistance and aerobic exercise in trained adults.

See the scientific wording

In exercise-trained adults, Tongkat Ali supplementation at 400 mg/day for four weeks does not enhance the physiological adaptations to regular resistance and aerobic training, suggesting it is not an effective ergogenic aid in this population.

Why this might work

In people who already train regularly, taking Tongkat Ali does not change how muscles build protein, how fat is burned, or how the body responds to exercise stress — so muscle growth, fat loss, strength gains, and recovery stay the same as without the supplement.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: The Effect of Tongkat Ali Supplementation on Body Composition in Exercise-Trained Males and Females

    For people who already work out regularly, taking Tongkat Ali for a month didn’t help them build more muscle, lose more fat, get stronger, or feel better — just like taking a sugar pill.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.