Tribulus Terrestris for Libido

Evidence grade C — Hormone-independent

Assembled by the app from other entries in this library. It adds no evidence of its own — follow the links to the entries it draws on.

1 at grade C — 1 graded row

What is known

Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.

Outcome	Grade	Effect size	Agreement
LibidoHormone-independent	Evidence grade C	Small	mixed

Read off the same rows as above. Nothing here is added that the entry does not itself record.

For libido, Tribulus Terrestris earns evidence grade C (small effect, mixed consistency) — the evidence is limited or mixed. Hormone-independent

Proposed to raise luteinizing hormone/testosterone; human data contradict this.

Not recommended for testosterone; libido effect is inconsistent.

Generally safe; rare kidney/liver case reports at high doses.

It won't raise your testosterone — that's settled. At best a modest, inconsistent libido effect. Don't buy it for hormones.

As the entry records it, from the studies it summarises. Not a recommendation for you — doses that suit a trial population may not suit you.

Entries that share this one's tags or conditions.

Tribulus Terrestris for TestosteroneEvidence grade D — No increaseEvidence grade D
Fenugreek for TestosteroneEvidence grade C — InconsistentEvidence grade C
Tongkat Ali for LibidoEvidence grade C — SubjectiveEvidence grade C
Fenugreek for Sexual function / libidoEvidence grade C — Standardized extractsEvidence grade C

This entry lists no references of its own — it is assembled from the entries it links to, whose sources are on their pages.

Last revised Jul 10, 2026. A grade is this entry's reading of the evidence, not medical advice.