Supplement Hype reports the state of evidence and grades claims. It is not a substitute for a doctor or pharmacist and does not diagnose, treat, or cure anything. Read the full disclaimer →
By goal
Ranked by the strength of human evidence — not popularity. 11 entries touch this goal. Each is graded claim by claim, because the same supplement can be strong for one use and weak for another.
essential if low, oversold if not
Real and important if you're deficient. Marketed as a cure-all for people who already have enough.
Marketing intensity 80 of 100. Evidence strength 55 of 100. Verdict: Overhyped.
the quiet, cheap sleep amino acid
Under-marketed and reasonably promising for sleep. The longevity buzz, though, is built almost entirely on worms and mice.
Marketing intensity 42 of 100. Evidence strength 48 of 100. Verdict: Hype ≈ evidence.
the energy-drink amino acid that went viral for aging
A 2023 mouse study lit up the longevity world - then a 2025 human study undercut the core premise. For exercise there's a small, real signal; for living longer, it's unproven.
Marketing intensity 70 of 100. Evidence strength 40 of 100. Verdict: Overhyped.
the mitochondria supplement with actual RCTs
Better evidenced than most longevity supplements - real RCTs show small gains in muscle strength and mitochondrial markers. Caveats: effects are modest, trials are small and industry-funded.
Marketing intensity 76 of 100. Evidence strength 38 of 100. Verdict: Overhyped.
the 'brain magnesium' with thin, industry-funded data
Marketed as the magnesium that reaches your brain. The human evidence is one or two small, industry-funded trials - promising, nowhere near proven, and priced at a steep premium.
Marketing intensity 80 of 100. Evidence strength 35 of 100. Verdict: Severely overhyped.
the longevity influencer's favourite
It reliably raises NAD+ in your blood. Whether that does anything for human aging is unproven - and in the US the FDA no longer allows it to be sold as a supplement.
Marketing intensity 90 of 100. Evidence strength 30 of 100. Verdict: Severely overhyped.
insurance you probably don't need
Mostly harmless, mostly unnecessary if you eat reasonably. It treats a worry more than a deficiency.
Marketing intensity 65 of 100. Evidence strength 30 of 100. Verdict: Overhyped.
the red-wine longevity dream that didn't translate
The molecule that launched the longevity-supplement craze - on yeast and worms. In humans it's barely absorbed and the lifespan and heart claims haven't held up.
Marketing intensity 80 of 100. Evidence strength 25 of 100. Verdict: Severely overhyped.
the autophagy-longevity bet, early in humans
A compelling longevity mechanism (it triggers autophagy) with encouraging animal data - but the human cognition trials are small and mixed, not the proven memory aid it's sold as.
Marketing intensity 72 of 100. Evidence strength 25 of 100. Verdict: Severely overhyped.
the senolytic that's still all mice
A genuinely interesting 'senolytic' flavonoid that extended lifespan in mice and is now in human trials. But there are no human longevity results yet, and absorption is poor.
Marketing intensity 78 of 100. Evidence strength 20 of 100. Verdict: Severely overhyped.
the widest hype gap on this list
A century-old medical dye with interesting mechanisms, almost no long-term human evidence for the biohacker claims, and real, specific dangers if you take antidepressants.
Marketing intensity 95 of 100. Evidence strength 20 of 100. Verdict: Severely overhyped.
Based on human evidence, the best-supported options here are Vitamin D3. Each is graded claim by claim — open a card for the sources.
Watch out for NMN (nicotinamide mononucleotide), Multivitamin, Resveratrol, Spermidine, Fisetin, Methylene blue — the marketing runs well ahead of the human evidence for these.