Tongkat ali and energy
What 2 graded rows on tongkat ali agree on for energy, and where they differ. Counted side by side, never averaged.
Consensus finder Rows from the Tongkat ali page, reviewed Oct 21, 2026 How it decides
What the rows agree on
Each block and row is one graded row from the Tongkat ali page, with its PubMed record.
Your question
Tongkat ali and energy
2 rows · 171 peopleSplit. 1 row found an improvement and 1 found no difference.
- CGrade C× 1
- DGrade D× 1
- Rows
- 2
- Trials
- 2
- At least: a review without a trial count
- People
- 171
- Pooled reviews may count some twice
Where they differ
From the rowsThe best-graded row, grade C, is a meta-analysis of 139 people (2015) and found no difference.
The row that found no difference was larger: 139 people, against 32 people for the row that found an improvement.
The row that found no difference is a pooled review of several trials; the row that found an improvement is a single study.
The row that found no difference ran longer (3 months) than the row that found an improvement (2 weeks).
The row that found an improvement is newer (2021) than the row that found no difference (2015).
The best grade is C among the row that found no difference, and D among the row that found an improvement.
The rows
1 improved · 1 no difference- DGrade DTotal and free testosterone · Improved
RCT · n 32 · 2021 · Healthy young men (mean age 24)
600 mg/day · 2 weeks
Total testosterone, free testosterone and estradiol rose more than with placebo; luteinising hormone, FSH and SHBG did not change.
Row on the Tongkat ali page · PubMed 33559971 (opens PubMed)
- CGrade CSexual-function questionnaire scores (IIEF-5) · No difference
Meta-analysis · n 139 · 2015 · Men in 2 randomized controlled trials of erectile function
Not stated in the abstract · 12 weeks
No significant overall difference from placebo in IIEF-5 change at 12 weeks (heterogeneity 89.5%); a subgroup with lower baseline scores improved by 2.15 points.
Row on the Tongkat ali page · PubMed 26365449 (opens PubMed)