Longevity Stack for Beginners
Starting a longevity stack doesn't need to be complicated. Here's where to begin — with just 3–5 supplements that cover the most ground.
You don't need 20 supplements. The best longevity stack starts with the basics — fixing deficiencies, reducing inflammation, and supporting mitochondrial health. Start small, measure, and add from there.
This guide is for you if: You're interested in longevity but don't know where to start, feel overwhelmed by the number of supplements available, or want a simple, evidence-based protocol.
See the evidenceTier 1: The essentials (start here)
These cover the biggest gaps for most Indians and have strong evidence for long-term health:
| Supplement | Dose | Why it's Tier 1 |
|---|---|---|
| Omega-3 (EPA/DHA) | 1–2 g/day | Anti-inflammatory, cardiovascular, brain — most Indians get almost none |
| Vitamin D3 + K2 | 2,000–4,000 IU D3 + 100 mcg K2 | 80%+ of Indians are deficient; affects immunity, bones, hormones |
| Magnesium glycinate | 200–400 mg | Sleep, stress, 300+ enzymatic reactions; widespread deficiency |
| Creatine | 3–5 g/day | Brain health, muscle, energy — one of the most studied supplements ever |
Morning: Omega-3 (with breakfast) + Vitamin D3/K2 (with fatty meal) + Creatine (any time)
Evening: Magnesium glycinate (30–60 min before bed)
Tier 2: Add after 2–3 months
Once your basics are covered and you've retested your key markers, consider adding:
- NMN or NR (250–500 mg/day) — NAD+ precursors for cellular energy and repair
- Curcumin (BCM-95) (500 mg/day) — powerful anti-inflammatory, widely used in India
- CoQ10 (ubiquinol) (100–200 mg/day) — mitochondrial support, especially if over 35
- NAC (600 mg/day) — glutathione precursor, liver and lung support
How to actually start
- Get baseline labs: Vitamin D, omega-3 index, hsCRP, HbA1c, CBC, liver enzymes, ferritin. This tells you what you're actually deficient in.
- Start Tier 1: Just the four essentials for 2–3 months. Don't add everything at once — you won't know what's working.
- Retest at 90 days: Check if your vitamin D, omega-3 index, and hsCRP have improved. This validates your stack.
- Add Tier 2 selectively: Based on your results and goals, add 1–2 Tier 2 supplements. Retest again in 90 days.
Starting 10 supplements at once (you can't tell what's working). Buying cheap forms (magnesium oxide, cyanocobalamin). Skipping bloodwork (you're guessing). Copying someone else's stack without knowing your own deficiencies.
Build your longevity stack the right way
eterni helps you get baseline labs, choose the right supplements, and retest to see what's actually working.
Get early accessFrequently Asked Questions
What is the best longevity supplement to start with?
Omega-3 (EPA/DHA) is arguably the single most impactful starting point. Most Indians get virtually no omega-3 from diet, and the evidence for cardiovascular, brain, and inflammatory benefits is extremely strong. Pair it with vitamin D3 since most Indians are deficient in that too.
How many supplements should a beginner take?
Start with 3–5. The Tier 1 stack (omega-3, vitamin D3/K2, magnesium, creatine) covers the most ground with the least complexity. Don't add Tier 2 until you've been consistent with Tier 1 for at least 2 months and have retested your key markers.
Do I need bloodwork before starting supplements?
Strongly recommended. Baseline labs (vitamin D, omega-3 index, hsCRP, ferritin, HbA1c, CBC) tell you what you're actually deficient in and give you a reference point to measure progress. Without labs, you're just guessing.
Is NMN worth taking for longevity?
NMN has promising animal data and emerging human evidence for raising NAD+ levels, which decline with age. It's a reasonable Tier 2 addition after 35, but it's expensive and the human evidence is still young. Don't prioritise it over fixing basic deficiencies first.
Why these supplements for longevity?
The longevity field identifies several key "hallmarks of aging" — inflammation, mitochondrial decline, NAD+ depletion, cellular senescence, and nutrient sensing dysregulation. The Tier 1 stack addresses the most actionable of these:
Omega-3 (EPA/DHA) directly reduces systemic inflammation (measured by hsCRP), improves endothelial function, and has robust evidence for reducing cardiovascular mortality. The VITAL trial and REDUCE-IT study both showed meaningful benefits.
Vitamin D3 is technically a hormone, not a vitamin. It regulates over 1,000 genes involved in immune function, bone metabolism, and cellular repair. The prevalence of deficiency in India (estimated 70–90%) makes it one of the highest-impact interventions.
Creatine isn't just for gym-goers. It provides phosphocreatine for rapid ATP regeneration in brain and muscle tissue. Human studies show cognitive benefits, especially in vegetarians and older adults. At 3–5 g/day, it's one of the safest and most studied supplements in existence.
Magnesium is a cofactor in over 300 enzymatic reactions including DNA repair, protein synthesis, and energy metabolism. Subclinical deficiency accelerates aging processes and is linked to higher all-cause mortality in prospective studies.
Know what's working. Know what's not.
eterni connects your lab results, supplements, and retests — so you can see the trajectory, not just a snapshot.
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