Tribulus Terrestris and Testosterone: What 10 Studies Found

• L-arginine

  Under 1% of the low end
  One gummy5 mg at most

  Trials in men with mild to moderate ED1,500-5,000 mg

  Comparison source: (Rhim 2019, arginine and ED meta-analysis)

• Tribulus

  1.2% of the low end
  One gummy5 mg at most

  Daily amounts in trials400-750 mg

  Comparison source: (Vilar Neto 2025, tribulus review)

• Ashwagandha

  2.1% of the low end
  One gummy5 mg at most

  Daily extract in stress trials240-1,250 mg

  Comparison source: (NIH ODS, Ashwagandha)

• Caffeine

  1.2% of the low end
  One gummy5 mg, printed

  FDA's daily amount for most adults400 mg

  Comparison source: (FDA, How much caffeine is too much?)

• Added sugar

  6% of the Daily Value
  One gummy3 g, printed

  Daily Value for added sugars50 g

  Comparison source: (FDA, Added Sugars on the label)

Red bars: the most one gummy can hold, from the label arithmetic. Brass bars: daily amounts used in research, or the Daily Value. The label hides single amounts inside the 82 mg blend, so the gummy figures are ceilings, not measured amounts. This is our arithmetic, not a lab test.