Quick answer: Maca and fenugreek have small trials suggesting modest improvements in libido. Neither reliably raises testosterone, and Tribulus has not been shown to raise testosterone in men in controlled trials.
Maca
An Andean root. Small trials at 1.5 to 3 g a day found modest improvements in sexual desire after several weeks, with no change in hormones.
Fenugreek
A seed used in cooking. Some industry-funded trials of fenugreek extracts reported better libido scores; effects on testosterone are mixed. It can lower blood sugar and may cause reactions in people allergic to peanuts or chickpeas.
Tribulus terrestris
Heavily marketed for testosterone, but controlled trials in men have not shown increases. Some small studies suggest effects on desire.
What this means
These ingredients appear in a brand graphic, not a published label, and their amounts are unknown. See the two formulas.
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General information, not medical advice. Strong Peak is a dietary supplement and is not intended to diagnose, treat, cure or prevent any disease.