OstroVit - Histidine is an amino acid...
Puritan's Pride - Tribulus Terrestris contains an extract of the Tribulus terrestris plant standardized to contain 40% saponins.
Dietary supplement MEX Nutrition - Pure Tribulus 1000 contains super-concentrated tribulus, completely purified from ballast impurities, designed to normalize the synthesis of your own testosterone.
MEX Nutrition - T 1.5K food supplement contains Tribulus Terrestris extract, which increases the level of testosterone and growth hormone in the body.
NOW® Tribulus 1000 mg - Tribulus - Tribulus Terrestris plant juice extract, the most powerful and effective non-hormonal drug for potency enhancement.
Puritan's Pride - Fenugreek contains fenugreek (fenugreek) extract, which has a positive effect on libido and improves overall well-being.