Longevity Supplement Value Index 2026
Normalized value comparisons for longevity supplements where current USD price and active dose can be verified.
Why Phase 3 separates the scores
Transparency, testing, evidence match, value and formula complexity answer different questions. Combining them into one mega-score would require arbitrary weighting and would hide the tradeoffs that matter to real buyers.
Ingredient evidence is not finished-product evidence
A commercial product can contain an ingredient supported by human research without the exact retail formula ever being tested. Phase 3 records that distinction explicitly rather than allowing a finished supplement to borrow every claim associated with its ingredients.
Why product identity matters
The NAD+ category now contains NMN powders, liposomal capsules, fast-dissolve products, sublingual gels and branded nicotinamide riboside. Likewise, spermidine products range from food-derived low-dose formulas to much higher-strength products. Ingredient name alone is not enough to establish equivalence.
Why current testing documents matter
A visible batch-specific COA is more auditable than a generic claim that testing occurs. Testing can support identity, potency or contaminant control, but it does not prove that a supplement produces a desired health outcome.
Why price comparisons need boundaries
Cost per milligram is useful only inside a comparable ingredient family and only when dose and current price are both known. Comparing milligrams of unrelated compounds produces a neat spreadsheet and a meaningless conclusion.
How formula complexity changes the burden of proof
A focused single-active product is easier to map to ingredient research. A multi-active stack can be convenient, but the more ingredients it contains, the more assumptions are required about dose sufficiency, interactions and whether the exact combination has ever been studied.
What a lower score actually means
A lower transparency or testing score means the reviewed public evidence is less complete or less auditable. It does not prove hidden product quality is poor. Phase 3 scores what can be verified, not what might exist behind the scenes.
How to use these reports before buying
Verify the current label, active amount, serving size, ingredient form, batch documentation, warnings, current price and seller. For decisions involving medications or medical conditions, product research should be combined with qualified professional advice.
Why the rankings can change
Prices, formulas, pack sizes, certifications and batch documents change. Phase 3 is a dated market snapshot and should be updated when those inputs change rather than pretending a 2026 ranking is permanent.
What Phase 3 does not claim
The database does not prove that a product reverses aging, prevents disease or extends lifespan. Its scores describe commercial auditability and evidence relationships, not personal medical outcomes.
Current value comparison
| Product | Family | Dose | Price | Cost / 100 mg | Value |
|---|---|---|---|---|---|
| ProHealth Longevity — NMN Pro Powder - Uthever | NMN / NAD+ | 1000 mg | $98.95 | $9.89 | 10.0/10 |
| Renue By Science — NMN Pure Powder | NMN / NAD+ | 500 mg | $54.95 | $10.99 | 9.5/10 |
| Tru Niagen — Tru Niagen Pro 1,000 mg | NMN / NAD+ | 1000 mg | $116.00 | $11.60 | 9.3/10 |
| Renue By Science — Liposomal NMN Capsules | NMN / NAD+ | 500 mg | $64.95 | $12.99 | 8.7/10 |
| DoNotAge — Pure NMN | NMN / NAD+ | 500 mg | $80.00 | $16.00 | 7.4/10 |
| Tru Niagen — Tru Niagen 300 mg | NMN / NAD+ | 300 mg | $49.00 | $16.33 | 7.3/10 |
| Double Wood — NMN Supplement | NMN / NAD+ | 250 mg | $48.95 | $19.58 | 6.0/10 |
| Renue By Science — NMN Resveratrol Gel | NMN / NAD+ | 240 mg | $63.95 | $26.65 | 3.0/10 |
| Double Wood — Quercetin with Bromelain | Quercetin | 1000 mg | $24.95 | $2.50 | 10.0/10 |
| ProHealth Longevity — Trans-Resveratrol Plus | Resveratrol | 1000 mg | $31.08 | $3.11 | 10.0/10 |
| Double Wood — Resveratrol Supplement | Resveratrol | 500 mg | $19.95 | $3.99 | 3.0/10 |
| DoNotAge — Pure Spermidine | Spermidine | 8 mg | $39.00 | $487.50 | 10.0/10 |
| ProHealth Longevity — Pure Spermidine | Spermidine | 1 mg | $29.95 | $2995.00 | 3.0/10 |
Why Phase 3 separates the scores 1
Transparency, testing, evidence match, value and formula complexity answer different questions. Combining them into one mega-score would require arbitrary weighting and would hide the tradeoffs that matter to real buyers.
Ingredient evidence is not finished-product evidence 2
A commercial product can contain an ingredient supported by human research without the exact retail formula ever being tested. Phase 3 records that distinction explicitly rather than allowing a finished supplement to borrow every claim associated with its ingredients.
Why product identity matters 3
The NAD+ category now contains NMN powders, liposomal capsules, fast-dissolve products, sublingual gels and branded nicotinamide riboside. Likewise, spermidine products range from food-derived low-dose formulas to much higher-strength products. Ingredient name alone is not enough to establish equivalence.
Why current testing documents matter 4
A visible batch-specific COA is more auditable than a generic claim that testing occurs. Testing can support identity, potency or contaminant control, but it does not prove that a supplement produces a desired health outcome.
Why price comparisons need boundaries 5
Cost per milligram is useful only inside a comparable ingredient family and only when dose and current price are both known. Comparing milligrams of unrelated compounds produces a neat spreadsheet and a meaningless conclusion.
How formula complexity changes the burden of proof 6
A focused single-active product is easier to map to ingredient research. A multi-active stack can be convenient, but the more ingredients it contains, the more assumptions are required about dose sufficiency, interactions and whether the exact combination has ever been studied.
What a lower score actually means 7
A lower transparency or testing score means the reviewed public evidence is less complete or less auditable. It does not prove hidden product quality is poor. Phase 3 scores what can be verified, not what might exist behind the scenes.
How to use these reports before buying 8
Verify the current label, active amount, serving size, ingredient form, batch documentation, warnings, current price and seller. For decisions involving medications or medical conditions, product research should be combined with qualified professional advice.
Why the rankings can change 9
Prices, formulas, pack sizes, certifications and batch documents change. Phase 3 is a dated market snapshot and should be updated when those inputs change rather than pretending a 2026 ranking is permanent.
What Phase 3 does not claim 10
The database does not prove that a product reverses aging, prevents disease or extends lifespan. Its scores describe commercial auditability and evidence relationships, not personal medical outcomes.
Why Phase 3 separates the scores 11
Transparency, testing, evidence match, value and formula complexity answer different questions. Combining them into one mega-score would require arbitrary weighting and would hide the tradeoffs that matter to real buyers.
Ingredient evidence is not finished-product evidence 12
A commercial product can contain an ingredient supported by human research without the exact retail formula ever being tested. Phase 3 records that distinction explicitly rather than allowing a finished supplement to borrow every claim associated with its ingredients.
Why product identity matters 13
The NAD+ category now contains NMN powders, liposomal capsules, fast-dissolve products, sublingual gels and branded nicotinamide riboside. Likewise, spermidine products range from food-derived low-dose formulas to much higher-strength products. Ingredient name alone is not enough to establish equivalence.
Why current testing documents matter 14
A visible batch-specific COA is more auditable than a generic claim that testing occurs. Testing can support identity, potency or contaminant control, but it does not prove that a supplement produces a desired health outcome.