Maca root extract for men: what trials found and what 10 mg is

• Maca (root equivalent)100 mg on the label

  Studies: gelatinized maca 1,500 and 3,000 mg a day (12 weeks) and a maca extract at 2,400 mg a day; the label's 10 mg extract equals 100 mg of root (10 x 10). Studies used about 15 to 30 times the label amount. (Gonzales 2002, maca desire and T) (Zenico 2009, maca and mild ED)

• Horny goat weed80 mg on the label

  No human trial of horny goat weed extract at this dose was found; the reviews describe mostly cell and animal work. No human trial range found. (Niu 2022, icariin review) (Meng 2026, icariin and ED)

• Damiana (leaf equivalent)50 mg on the label

  No human trial of damiana alone was found; human data come only from herb blends. No human trial range found. (Szewczyk 2014, damiana)

• Tongkat ali (extract)25 mg on the label

  Studies: 200 mg a day of extract for one to three months in two open-label studies; the label's row is 25 mg of extract (equal to 2,500 mg root). Studies used about 8 times the label amount. (Tambi 2012, tongkat ali LOH) (Tambi 2010, tongkat ali fertility)

• Mucuna (seed extract)10 mg on the label

  Study: 5 g (5,000 mg) of seed powder a day for three months, uncontrolled; the label's row is 10 mg of an extract at 98% L-DOPA. Studies used about 500 times the label amount. (Shukla 2010, mucuna in men) (RIVM 2024, mucuna risk assessment)

• L-arginine10 mg on the label

  Studies: 1,500 to 5,000 mg a day in men with mild to moderate ED (10 trials) and 6 g a day in one trial. Studies used about 150 to 500 times the label amount. (Rhim 2019, arginine ED) (Menafra 2022, arginine ED)

• Zinc (as gluconate)2.5 mg on the label

  Reference levels: 11 mg a day recommended for men and 40 mg a day upper limit for adults (NIH); not study doses. A reference level, not a study dose: the label is 6% of the higher level. (NIH ODS, zinc) (Prasad 1996, zinc and T)

Label amount per gummyRange used in studiesReference level

Log scale: each gridline is ten times the one before. Studied ranges are daily amounts from the trials linked on each row; rows marked as a reference show a reference level, not a study dose. A bar being far away does not mean the gummy is unsafe or useless; it means the study results cannot be borrowed for it, because none tested HoneyBoost or this combination.