Longevity Supplements

A quick note on EU food-claims law. The findings below describe what studies measured. They are not authorised EU health claims, and you may not use them in product marketing or on a label. Under Regulation (EC) No 1924/2006, the only health claims you can legally make for a food or supplement substance in the EU are the ones on the EU Register of nutrition and health claims (ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register). For most of the substances here, no such authorised claim exists.

One honest truth before we get into pills: no supplement replaces the basics. The biggest wins on aging still come from exercise, food, sleep, and stress management, not from what you swallow.

That said, some supplements have decent science behind them. They can fix common shortfalls or nudge specific aging pathways in the right direction, once the foundation is already in place.

When supplements make sense:

• Fixing a real, tested deficiency (like Vitamin D or B12)
• Covering at-risk groups (older adults, vegans)
• Fine-tuning specific markers (blood test numbers) with a doctor's input
• As support for a healthy lifestyle, not a substitute

When they don't:

• As a fix for poor diet and no exercise
• Without knowing your baseline numbers
• Taking huge doses with no evidence behind them
• Chasing every shiny new "miracle" compound

The supplement industry is largely unregulated. Quality is all over the map, and marketing often runs ahead of the science. Stay skeptical, and favor brands that third-party test the actual capsule contents.

Talk to a healthcare provider before you start anything new, especially if you take medication or have a health condition.

DACH starter stack (Tier 1 evidence):

Supplement	Dose	Monthly cost (DACH)	Notes
D3 + K2 combo	D3 1,000 to 2,000 IU / K2-MK7 100 to 200 mcg	~€10 to 15	Widely stocked at dm, Rossmann, and most Apotheken
Omega-3 EPA+DHA	1,000 to 2,000 mg	~€15 to 25	Prefer the triglyceride form over ethyl ester
Magnesium glycinate or bisglycinate	200 to 400 mg	~€8 to 15	Skip the cheap oxide form. Absorption is poor
Creatine monohydrate	3 to 5 g/day	~€5 to 10	Creapure-labelled products are the DE quality standard
Tier 1 total		~€40 to 65/month

Where should you buy in DACH? The Tier 1 basics (D3/K2, omega-3, magnesium, creatine) sit on drogerie shelves at dm and Rossmann at the lowest prices. The same brands cost more inside Apotheken. But pharmacists can flag drug interactions and check your meds list, which the drogerie clerk cannot. Use the drogerie for routine restocking. Use the Apotheke when you are starting a new stack or already on prescription drugs.

Test before you supplement. Here is a baseline panel worth ordering (ask your Hausarzt as IGeL, or on GKV if indicated): 25-OH vitamin D, Omega-3 Index (Cerascreen home test ~€65 to 80 via DACH Apotheken, or OmegaQuant direct), ferritin, B12, HbA1c, lipid panel, hs-CRP. Retest 25-OH D after 12 weeks and the Omega-3 Index after 4 months. Testing saves money and stops you overdoing the fat-soluble vitamins that build up in body tissue.

EU legal status, quick reference. NMN is not yet broadly authorised in the EU. But EFSA published a positive safety opinion on EffePharm/Uthever® NMN on 13 May 2026 (300 mg/day, excluding pregnant and lactating women). European Commission authorisation is pending and will be product-specific (see the NMN-Germany guide for the full picture). NR is EU-authorised (Regulation 2020/16). Melatonin status varies across DACH. Germany allows low-dose products (typically up to 1 mg) as a food supplement OTC at dm, Rossmann, and Apotheken, while higher-dose products like Circadin (2 mg prolonged-release) are prescription-only. Austria sells melatonin both as an OTC food supplement and as an Rx medicine. Switzerland treats melatonin as prescription-only at any dose. Apigenin and magnesium glycinate are food-supplement-legal across DACH.

NAD+ (nicotinamide adenine dinucleotide, the molecule your cells need for energy production, DNA repair, and switching on sirtuins) drops as you age. How much depends on the tissue you measure. Human skin studies suggest drops of around 50% across adult life. Cerebrospinal fluid (the liquid around your brain) shows a smaller drop of about 14%. No single number fits every tissue, which is why blanket claims about "NAD+ depletion" tend to overshoot the actual biology in any given organ.

NMN (Nicotinamide Mononucleotide): A direct building block for NAD+. The animal studies look strong: better metabolism, more physical stamina, improved insulin sensitivity, and longer lifespan in some models.

Human evidence is growing but still early. Studies show NMN is safe and does raise NAD+ levels, and people have seen gains in muscle function, heart and blood vessel health, and some metabolic markers. Long-term effects are still unknown.

Typical doses in studies: 250 to 500 mg daily.

NR (Nicotinamide Riboside): Another NAD+ precursor, with a bit more human research behind it. The branded form NIAGEN has clinical trials showing it safely raises NAD+ levels.

NR may absorb better than NMN, though head-to-head comparisons are limited.

Typical doses: 300 to 1,000 mg daily.

So, are they worth it? NAD+ boosters are among the more promising longevity supplements. The biological logic is solid and the evidence is growing, but long-term human data is still missing. They are relatively expensive, and they make more sense once you have nailed the lifestyle basics.

Regulatory note: In November 2022 the US FDA excluded NMN from dietary supplements under FD&C Act §201(ff)(3)(B) (the prior drug-investigation exclusion). After a citizen petition from the Natural Products Association and the Alliance for Natural Health, plus a stayed federal lawsuit, the FDA reversed that determination on 29 September 2025. A follow-on response letter went to ingredient supplier SyncoZymes on 2 December 2025, with a parallel letter to Inner Mongolia Kingdomway shortly after (per NutraIngredients reporting, 9 December 2025). NMN may now be lawfully marketed as a US dietary ingredient, though this was a docket-level response, not a Federal Register notice. NR keeps its GRAS (Generally Recognized as Safe) status. The EU is different. As of May 2026, EFSA published a positive safety opinion on EffePharm/Uthever® NMN on 13 May 2026 (300 mg/day, excluding pregnant and lactating women). European Commission authorisation typically follows 5 to 7 months later and will be product-specific. NR is EU-authorised under Commission Implementing Regulation (EU) 2020/16. See the NMN-Germany guide for the full EU picture.

Cancer caveat (important). Pre-clinical work (Nature Cell Biology, 2019; Cell Metabolism, 2021) shows that NAD+ metabolism via NAMPT drives the pro-inflammatory senescence-associated secretory phenotype, and in some models it can also support tumour metabolism. Reviews from 2023 to 2026 have not refuted this. So people with active or recently treated cancer should not take NMN or NR without oncology input.

Vitamin D shortfalls are everywhere. Up to 40% of adults in Western countries come up low on blood-test panels. That matters for aging, because Vitamin D shapes hundreds of genes tied to immunity, bones, muscle, and inflammation in tissues across the whole body.

Recent longevity research: A sub-study of the VITamin D and OmegA-3 TriaL (VITAL, Am J Clin Nutr 2025) reported that daily Vitamin D3 supplementation slowed leukocyte-telomere shortening over four years versus placebo. Press coverage translated that effect into "≈ 3 years of typical aging." Read that carefully. It is not an authorised EU health claim, and it is a research finding on a proxy marker, not a biological-aging benefit you can attribute to Vitamin D3. Telomere length is a stand-in for cellular ageing, not a direct measure of biological age. And the main VITAL trial found mostly flat results for Vitamin D on cancer and cardiovascular outcomes overall. The only EU-authorised vitamin-D aging-adjacent claim is the Article 14 reduction-of-disease-risk wording on falls in adults aged 60 and over, at 20 µg/day.

Benefits with strong evidence:

• Bone health and fewer fractures
• Immune support
• Holding onto muscle strength
• Lower all-cause death rates (in people who are deficient)

Optimal levels: The 2024 Endocrine Society guideline no longer endorses a specific serum 25(OH)D threshold for healthy adults under 75, and routine population-wide screening is not recommended. Many longevity-focused practitioners aim for 40 to 60 ng/mL (100 to 150 nmol/L), but that target is not a mainstream guideline position. Most people need 1,000 to 2,000 IU daily to maintain adequate levels. Use 5,000 IU only with periodic blood monitoring.

Vitamin D3 vs D2: D3 (cholecalciferol) raises blood levels better than D2 (ergocalciferol), so go with D3.

Pairing with Vitamin K2: D3 is often combined with Vitamin K2 (menaquinone-7), because the two vitamins share calcium-handling pathways. The popular "K2 directs calcium into bone rather than arteries" framing is mechanistic shorthand from in-vitro and observational work (matrix-Gla-protein activation). It is not an authorised EU health claim. EFSA twice issued non-favourable opinions on cardiovascular and arterial claims for vitamin K2: once for menaquinone-7 and the function of the heart and blood vessels (EFSA Journal 2012, ID 125), and once for the MenaQ7® and maintenance of arterial elasticity Article 13(5) application (EFSA Journal 2020). The only authorised wording under Regulation (EU) 432/2012 is "Vitamin K contributes to normal blood clotting" and "Vitamin K contributes to the maintenance of normal bones".

Test your levels before you start. Vitamin D is fat-soluble and can build up in body fat, so dose according to what your blood actually shows.

Omega-3 fatty acids, especially EPA and DHA from fish oil, have decades of research behind them for heart and brain health. They are also linked to living longer in large observational cohorts.

Longevity evidence: An analysis of the Framingham Offspring Cohort (Am J Clin Nutr, 2021; 2,240 adults, average age around 65) found something striking. The difference in life expectancy at age 65 between the highest and lowest omega-3 index quintile matched the difference between non-smokers and current smokers: roughly 4.7 years. That comparison was first stated by co-author Sala-Vila in press coverage, and it was not a benefit you can attribute to omega-3 supplementation. A bigger pooled analysis of 17 studies (the FORCE consortium, Nature Communications, 2021; 42,466 people) found a 15 to 18% lower all-cause death risk (top vs. bottom fifth, depending on which fatty acid). Both are observational. They show a population-level association, not a guaranteed life-expectancy gain from taking a pill.

Why they help:

• Lower inflammation (the omega-3 to omega-6 ratio matters)
• Better heart markers (triglycerides, blood pressure)
• Support brain structure and function
• May protect against cognitive decline

Food vs supplements: Eating fatty fish (salmon, sardines, mackerel) 2 to 3 times a week covers most people. Supplements help if you don't eat fish, or if you need higher doses for medical reasons.

Picking a supplement:

• Look for combined EPA + DHA of 1,000 to 2,000 mg daily
• Choose products tested for purity (heavy metals, oxidation)
• Triglyceride form may absorb better than ethyl ester
• Algae-based options work for vegetarians

A safety signal at higher doses (atrial fibrillation). Two big trials saw it. REDUCE-IT (NEJM 2019; 4 g/day icosapent ethyl, EPA-only) and STRENGTH (JAMA 2020; 4 g/day omega-3 carboxylic acid, EPA+DHA) both showed an increase in new-onset atrial fibrillation at high-dose pharmaceutical omega-3. If you have prior arrhythmia, paroxysmal AF, or a cardioversion history, discuss the dose with your cardiologist before going above 1 g/day.

Testing: The Omega-3 Index blood test measures EPA+DHA as a percentage of red blood cell membranes. A target of 8 to 12% is promoted by OmegaQuant (the Harris lab that developed the test) as linked to the lowest cardiovascular risk. This is not an official AHA or ESC guideline target. Neither organisation currently recommends omega-3 supplements for primary prevention in average-risk adults (post VITAL, STRENGTH, and ASCEND). Most Western populations sit at 4 to 5%.

A few more supplements have evidence worth knowing about for healthy aging. They sit on a sliding scale, from "backed by EU-authorised claims" all the way down to "interesting mouse data, no human RCTs."

Resveratrol Found in red grapes and wine. Early work suggested it activates sirtuins (proteins tied to longevity). Then a 2010 paper (J Biol Chem) showed that a large part of the in-vitro SIRT1 activation was a fluorophore assay artifact. Animal studies are mixed, and human RCTs are mostly small and underwhelming, with poor bioavailability to boot. If you still want to try it, pick trans-resveratrol and take it with fat. EU adult food-supplement cap: 150 mg/day, under Commission Implementing Decision (EU) 2016/1190 (codified in Reg (EU) 2017/2470). Products above 150 mg per daily portion fall outside the EU novel-food authorisation and should not be marketed in the EU.

Fisetin and Quercetin (senolytics) Plant compounds studied for clearing senescent "zombie" cells (old cells that refuse to die and drive inflammation). They sit on different evidence bases, worth pulling apart. Fisetin had positive standalone mouse lifespan data in a 2018 study (EBioMedicine). But the more rigorous NIA Interventions Testing Program (ITP, 2023) failed to replicate any lifespan benefit in mice, and small human trials are ongoing. Quercetin's senolytic evidence is almost entirely as the D+Q combination with dasatinib (a prescription cancer drug), not standalone (see the Aging Cell work from 2015 onwards). Typical dosing cycles are a few days per month, not daily. The research is early, and self-experimenting with dasatinib is not recommended.

CoQ10 (Ubiquinone / Ubiquinol) Your cells need this for their energy factories (mitochondria). Levels drop with age, and it may support heart function and energy. Two forms are sold: ubiquinone (oxidized) and ubiquinol (reduced). Marketing pushes ubiquinol as 2 to 3 times more bioavailable, but the independent picture is more nuanced. Plasma equilibrates to roughly 95% ubiquinol regardless of which form you swallow. A 2019 review in Nutrition concluded that carrier lipids and solubilization drive bioavailability more than redox form does, so a well-formulated ubiquinone soft-gel can match a poorly-formulated ubiquinol capsule. The strongest "ubiquinol wins" pharmacokinetic data is largely from Kaneka-funded work (Kaneka makes the dominant ubiquinol ingredient). Ubiquinol may have a defensible edge for statin users, older adults, or anyone with poor fat absorption. Otherwise either form taken with a fat-containing meal is fine. See the dedicated CoQ10: Ubiquinol vs Ubiquinone guide for the full funding map and DACH product table, and the Mitochondria guide for the wider mitochondrial context. Typical dose: 100 to 200 mg/day with food.

Creatine Well-researched for holding onto muscle and strength, which matters a lot as you age. The EU Register authorises two creatine claims under Reg (EU) 432/2012 at 3 g/day: "Creatine increases physical performance in successive bursts of short-term, high intensity exercise" and (in adults over 55, with resistance training) "Daily creatine consumption can enhance the effect of resistance training on muscle strength". Growing research on cognitive and brain effects under sleep deprivation or high cognitive load is plausible, but not on the EU Register. So treat it as a research finding, not an authorised benefit claim. Long safety record at 3 to 5 g/day in healthy adults.

Magnesium A mineral most people don't get enough of. Your body uses it in 300+ enzyme reactions across the cell. It supports sleep, stress response, and heart and blood vessel health. Forms like glycinate or threonate may absorb better than the cheaper oxide form. Typical dose: 200 to 400 mg daily.

Taurine (what changed since 2023) A 2023 paper in Science reported that taurine supplementation extended lifespan by ~10 to 12% in mice and improved age-related markers in primates and humans. It drove a wave of consumer interest. Then a June 2025 NIH/NIA study in Science (senior author Rafael de Cabo) used three human cohorts (the Balearic Islands Study of Aging, the Atlanta Predictive Medicine Research cohort, plus rhesus-monkey and mouse longitudinal data) and found that circulating taurine concentrations either stayed stable or increased with age. That means taurine is unlikely to be a useful biomarker of aging. A separate 2025 paper in Aging Cell found no link between circulating taurine and muscle strength or mass in humans. Taurine is generally safe at 1 to 3 g/day in healthy adults, but long-term human RCTs with hard endpoints don't exist yet. So treat it as plausible-but-unproven, not as a confirmed longevity supplement.

Not every supplement marketed for longevity is worth your money. Some don't do much. Others can actively cause harm at the doses that show up on shop shelves and online.

Red flags:

• Mega-doses of antioxidants: High-dose Vitamin E, beta-carotene, and Vitamin A have shown harm in clinical trials. More is not better.

• Proprietary blends: When labels hide ingredients behind "proprietary blend," you can't see the actual doses.

• Unproven "anti-aging" compounds: New molecules with no human safety data. Let someone else go first.

• Products with miraculous claims: If it sounds too good to be true, it is. No pill will get you to 150.

• Cheap, untested products: Unknown brands, no third-party testing, suspiciously low prices.

Supplements with concerning evidence:

• High-dose Vitamin E: Linked to higher death rates when you look across many studies
• Beta-carotene supplements: Higher lung cancer risk in smokers
• Iron (unless you're deficient): Excess iron acts as a pro-oxidant and causes harm
• Calcium supplements: Some studies hint at a possible link to heart and blood vessel risk; get calcium from food first

General principles:

1. Test, don't guess. Know your numbers before supplementing.
2. Start low and go slow. Begin with smaller doses.
3. Quality matters. Pick third-party tested products.
4. Less is often more. A few solid picks beat a cabinet full.
5. Reassess every so often. Your needs shift over time.