A longevity supplement stack targets the biological hallmarks of aging: NAD+ decline, mitochondrial dysfunction, chronic inflammation, cellular senescence, and telomere shortening. The most evidence-supported compounds include NMN or NR for NAD+ repletion, omega-3s for inflammation, creatine for cellular energy, vitamin D3+K2 for bone and immune health, and magnesium for enzymatic function. This guide covers every major longevity compound, its mechanism, dosing, and the evidence behind it.

The Hallmarks of Aging and What Supplements Target Them

In 2013, researchers identified nine hallmarks of aging. Updated models have expanded this to twelve. Longevity supplements do not address all hallmarks equally, but the best ones target multiple pathways simultaneously.

Key Hallmarks Targetable by Supplements

• Genomic instability: DNA damage accumulates with age. Antioxidants and NAD+ support repair mechanisms.
• Epigenetic alterations: Gene expression patterns shift unfavorably. Compounds like alpha-ketoglutarate may influence epigenetic clocks.
• Loss of proteostasis: Misfolded proteins accumulate. Heat shock proteins (triggered by sauna, supported by certain supplements) help clear them.
• Mitochondrial dysfunction: Energy production declines. CoQ10, PQQ, and NAD+ precursors support mitochondrial health.
• Cellular senescence: Zombie cells accumulate and secrete inflammatory signals. Fisetin and quercetin show senolytic properties.
• Chronic inflammation (inflammaging): Low-grade systemic inflammation accelerates all other hallmarks. Omega-3s, curcumin, and SPMs (specialized pro-resolving mediators) address this.

Tier 1: Essential Longevity Supplements

These compounds have the strongest evidence base, the broadest benefits, and the most favorable safety profiles. Every longevity stack should include these.

Omega-3 Fatty Acids (EPA/DHA)

Dose: 2 to 3 grams combined EPA/DHA daily

Mechanism: Omega-3s incorporate into cell membranes, reduce inflammatory eicosanoid production, support cardiovascular health, and improve brain function. Higher omega-3 index (percentage of EPA/DHA in red blood cell membranes) is associated with reduced all-cause mortality.

Form matters: Triglyceride-form fish oil or algae oil absorbs better than ethyl ester forms. Look for third-party tested products for purity. Contact provider for current pricing

Vitamin D3 + K2

Dose: 5,000 IU D3 / 100 to 200 mcg K2 (MK-7 form) daily

Mechanism: Vitamin D regulates over 1,000 genes involved in immune function, bone metabolism, and inflammation. K2 directs calcium into bones and away from arteries. Deficiency is linked to increased mortality from cardiovascular disease, cancer, and infectious disease.

Target levels: Serum 25-OH vitamin D of 50 to 80 ng/mL. Test annually and adjust dosing accordingly. Contact provider for current pricing

Magnesium

Dose: 300 to 400 mg elemental magnesium daily (glycinate, threonate, or malate forms)

Mechanism: Cofactor in over 300 enzymatic reactions including DNA repair, protein synthesis, and energy metabolism. Subclinical magnesium deficiency affects up to 50% of the population and is associated with accelerated cellular aging.

Best forms: Magnesium glycinate for sleep and relaxation, magnesium L-threonate for cognitive support (crosses the blood-brain barrier), magnesium malate for energy and muscle function. Contact provider for current pricing Contact provider for current pricing

Creatine Monohydrate

Dose: 5 grams daily

Mechanism: Creatine serves as a rapid ATP regeneration system. Beyond muscle performance, it supports cognitive function (particularly under stress and sleep deprivation), may have neuroprotective properties, and supports cellular energy across all tissues. It is one of the most studied supplements in existence with an excellent safety profile.

Contact provider for current pricing

Tier 2: NAD+ Support

NAD+ (nicotinamide adenine dinucleotide) is a coenzyme present in every cell, essential for energy production, DNA repair, and sirtuin activation. NAD+ levels decline approximately 50% between ages 40 and 60.

NMN (Nicotinamide Mononucleotide)

Dose: 500 to 1,000 mg daily

Mechanism: NMN is a direct precursor to NAD+. It enters cells and is converted to NAD+ via the salvage pathway. Human clinical trials have shown NMN supplementation increases blood NAD+ levels, improves muscle insulin sensitivity, and enhances aerobic capacity in older adults. Contact provider for current pricing

NR (Nicotinamide Riboside)

Dose: 300 to 600 mg daily

Mechanism: NR is another NAD+ precursor that has been studied longer than NMN in humans. It reliably raises NAD+ levels. The choice between NMN and NR is largely personal preference, as both effectively increase NAD+. Contact provider for current pricing

Supporting NAD+ Compounds

• Resveratrol (500 mg with fat): Activates SIRT1, a sirtuin enzyme that depends on NAD+. Take with a fat source for absorption. Controversial as a standalone supplement, but may synergize with NAD+ precursors. Contact provider for current pricing
• TMG (trimethylglycine, 500 to 1,000 mg): Provides methyl groups that NMN metabolism may deplete. Many longevity researchers take TMG alongside NMN as insurance against methyl donor depletion.

Tier 3: Targeted Longevity Compounds

Fisetin

Dose: 100 mg daily or 500 to 1,000 mg for periodic senolytic protocols (2 consecutive days per month)

Mechanism: Fisetin is a flavonoid found in strawberries that has demonstrated senolytic activity in animal studies, selectively clearing senescent cells. It also has antioxidant and anti-inflammatory properties. Human clinical trials are ongoing. Contact provider for current pricing

Quercetin

Dose: 500 to 1,000 mg daily

Mechanism: Another flavonoid with senolytic properties, often used in combination with dasatinib in research settings. Also supports immune function and has anti-inflammatory effects. Contact provider for current pricing

CoQ10 (Ubiquinol Form)

Dose: 100 to 200 mg daily

Mechanism: An essential electron carrier in the mitochondrial electron transport chain. Production declines with age. Ubiquinol (the reduced form) absorbs better than ubiquinone. Especially important for anyone taking statin medications, which deplete CoQ10. Contact provider for current pricing

Curcumin

Dose: 500 to 1,000 mg (bioavailable form with piperine or as liposomal/phytosome formulation)

Mechanism: Potent anti-inflammatory that inhibits NF-kB, a master inflammatory transcription factor. Standard curcumin has poor bioavailability, so formulation matters. Contact provider for current pricing

Alpha-Ketoglutarate (AKG)

Dose: 1,000 mg daily (calcium AKG form)

Mechanism: A Krebs cycle intermediate that declines with age. Animal studies showed lifespan extension and reduced biological age markers. The Rejuvant clinical trial in humans showed a reduction in biological age by an average of 8 years over 7 months of use, though this result requires replication. Contact provider for current pricing

Tier 4: Emerging Compounds

These compounds show promise but have less human data. Consider them only after Tiers 1 through 3 are established.

• Spermidine (1 to 5 mg daily): Induces autophagy, the cellular recycling process. Found in wheat germ and aged cheese. Early human data suggests cardiovascular and cognitive benefits. Contact provider for current pricing
• Urolithin A (500 mg daily): Promotes mitophagy, the selective recycling of damaged mitochondria. Produced by gut bacteria from ellagic acid (pomegranates), but not everyone has the right microbiome to produce it. Supplementation bypasses this limitation. Contact provider for current pricing
• Rapamycin (prescription only): The most robust lifespan-extending compound in animal models. Functions as an mTOR inhibitor. Used off-label by some longevity physicians at low, intermittent doses. Not a supplement and requires medical supervision.

How to Build Your Stack

Do not start everything simultaneously. Build in phases:

1. Month 1: Tier 1 essentials (omega-3, D3+K2, magnesium, creatine)
2. Month 2: Add NAD+ support (NMN or NR + TMG)
3. Month 3: Add one Tier 3 compound based on your priorities (fisetin for senescence, CoQ10 for energy, curcumin for inflammation)
4. Month 4+: Evaluate, test blood markers, and adjust

longevity supplements stack how to start

Testing and Monitoring

Supplements without testing is guessing. Key biomarkers to track:

• hs-CRP: High-sensitivity C-reactive protein measures systemic inflammation. Target below 1.0 mg/L.
• Omega-3 index: Target 8% or higher.
• Vitamin D (25-OH): Target 50 to 80 ng/mL.
• Fasting glucose and insulin: Markers of metabolic health. HOMA-IR below 1.0 is optimal.
• Biological age tests: Epigenetic clocks (TruAge, GrimAge) provide a more nuanced view of aging rate than chronological age.

Frequently Asked Questions

What is the most important longevity supplement?

If forced to choose one, omega-3 fatty acids have the broadest evidence base linking higher levels to reduced all-cause mortality. They address inflammation, cardiovascular health, and brain function simultaneously.

Is NMN or NR better for longevity?

Both effectively raise NAD+ levels. NMN has gained popularity due to association with researcher David Sinclair, while NR has more published human clinical trials. Either is a reasonable choice. Some people alternate between them.

How much does a full longevity stack cost per month?

A Tier 1 stack runs approximately $60 to $100 per month. Adding NAD+ support increases the cost to $120 to $200. A full Tier 1 through 3 stack can run $200 to $350 monthly, depending on brands and dosing. Contact provider for current pricing

Can supplements actually extend lifespan?

No supplement has been proven to extend human lifespan in randomized controlled trials, because such studies would take decades. However, multiple compounds have extended lifespan in animal models and improved biomarkers of aging in human trials. The strongest case for supplementation is addressing deficiencies and supporting biological processes that decline with age.

Should I take all these supplements at once?

No. Start with Tier 1 essentials and add compounds gradually over months. This allows you to identify what works for you, monitor for any adverse effects, and build a sustainable routine.