Horse Peak Gelatin Ingredients: Every Amount The Panel Prints

The one row on this panel that is unambiguously a nutrient with a Daily Value. Eighty-four micrograms is 3,360 IU and 420% of the 20 mcg Daily Value, both of which the label prints and both of which survive checking.

The Institute of Medicine’s adult upper intake level is 4,000 IU a day, so one gummy uses 84% of it. That is the figure to hold on to if another vitamin D product is already in your cupboard. Whether vitamin D moves anything hormonal is a separate question: a trial in 307 men gave 1,400 IU a day and found no overall change in sex steroids, and a 2026 meta-analysis reviewed the same ground.

The amount on this label that sits inside its own research, which makes it the most interesting row here after the vitamin D3.

The study everyone in this category cites gave eight healthy men 10 mg a day for one week and reported a rise in free testosterone with a fall in SHBG. Eight men, seven days, no control group: it is a starting point rather than a finding. The 1987 metabolic-unit work that opened the subject used 3 mg a day. Seven milligrams is 35% of the 20 mg adult upper intake level, so any second boron-bearing product is worth adding up against it. A general review of boron in nutrition covers the rest.

Fenugreek has the best trial record of the four botanicals here, and the trials are about milligrams. The twelve-week study in 120 men aged 43 to 70 used 600 mg a day of a standardised seed extract, the six-week libido study used the same, and the 2024 dose-ranging trial ran 600, 1,200 and 1,800 mg. One practical note that has nothing to do with vitality: fenugreek has a measurable effect on blood glucose, which matters to anyone on a glucose-lowering prescription, although not at this amount. The NIH complementary health centre keeps a page on it.

Maca is the plant on this panel with the clearest published effect on sexual desire, and it is also the one whose trials used the largest amounts. The original twelve-week study used 1,500 or 3,000 mg a day and found desire improved while serum testosterone did not move at all, which is a useful result to know about. A later trial in men with mild difficulty used 2,400 mg a day of dry extract, and a safety study ran 3 g a day for twelve weeks. A systematic review called the overall evidence suggestive rather than settled.

Two things are worth saying about this row and the first is a printing error. The artwork repeats Trigonella foenum-graecum L. here, which is fenugreek’s name; Tribulus terrestris L. is the one that belongs.

The second is that tribulus has the most contradictory record of the four. A twelve-week trial in 180 men used 1,500 mg a day of a 35-45:1 extract standardised to at least 112.5 mg of furostanol saponins and improved a score; a study at 800 mg a day matched placebo. A 2025 review and a 2026 meta-analysis both sit between those two, and an older systematic review of the aphrodisiac claim found little to support it.

The plant with the largest reputation on this panel and the thinnest human record. Icariin was measured against PDE5 in a test tube and studied in cells and in rats, and a 2022 review is candid that the gap between those results and a human outcome has not been closed. Epimedium material is also notoriously variable between batches, which is its own argument for reading an amount rather than a name.