Tongkat Ali: Testosterone Trials, Extracts and Safety
Tongkat Ali studies concern particular root extracts. The cited testosterone review reports a positive pooled marker result but high heterogeneity, publication-bias signals and repeated comparisons; normal-testosterone findings are inconclusive. Erectile-function evidence does not establish Tongkat alone. The salivary-hormone stress trial and several underlying trials disclose Biotropics funding and commercial roles. EFSA could not establish safety for the assessed extract, and liver-injury causality and incidence remain uncertain. The cited protocols do not establish a universal safe dose or medicine compatibility.
