Double the spermidine of 4 out of the 5 top competitors tested.

An independent 3rd-party lab tested SPMD-99 against the 5 top-selling competitors. Lab reports state that product was received in unopened retail packaging.

SPMD-99 tested at 21.9 mg of spermidine per serving. The label says 20 mg.

The next closest brand had 19.0 mg. The other four had 11.0, 10.4, 9.4 and just 0.7 mg.

See every brand's lab report.

Most spermidine supplements use wheat germ extract, which is roughly 1% spermidine by weight. That's why two capsules of one brand and two of another can deliver completely different amounts.

SPMD-99 contains the pure molecule, verified lot by lot. No wheat, no gluten, free from the nine major allergens.

Every serving delivers a full 20 mg, which meets or exceeds the dosage in every major study linking spermidine to a longer life.

That matters, because spermidine triggers the deep cellular cleanup that fasting is famous for. It's also linked to nearly 6 years of longer life, and it's behind fuller hair, stronger nails and firmer skin.

In a placebo-controlled study lasting 90 days, spermidine pushed significantly more follicles back into active growth. Hair is usually where people see it first.

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The Opus Longevity Team