List of Supplements Peter Thiel Takes: The Complete Longevity Stack Guide

A comprehensive breakdown of the billionaire tech investor's confirmed anti-aging regimen plus science-backed supplements likely in his protocol

Peter Thiel, the PayPal co-founder and billionaire tech investor, has invested millions into longevity research and openly discussed his pursuit of radical life extension. Unlike Bryan Johnson's highly public protocol of over 100 daily supplements, Thiel maintains a more private approach to biohacking. He's stated he's "looked into all these different, somewhat heterodox things" when it comes to anti-aging strategies.

Key Takeaways

• Thiel's confirmed stack is minimal but targeted – He's publicly stated he takes metformin and human growth hormone (HGH), focusing on metabolic health and muscle preservation rather than extensive protocols

• His investments reveal his interests – Thiel has funded longevity research and plans for cryogenic preservation, indicating serious commitment to life extension beyond basic supplementation

• Science supports the longevity approach – Omega-3 supplementation is associated with approximately 4.7-year increase in life expectancy in those with optimal blood levels

• Prescription medications require oversight – Both metformin and HGH require medical supervision, and HGH carries serious side effects including increased cancer risk

• Cellular health optimization matters most – The underlying theme across all longevity supplements is supporting mitochondrial function, reducing inflammation, and promoting cellular repair

• Foundational supplements deliver results – Omega-3s, vitamin D, magnesium, and creatine form the evidence-based core of most longevity protocols

Confirmed: Peter Thiel's Stated Supplements

1. Metformin

Metformin stands as Peter Thiel's most publicly documented anti-aging intervention. Originally developed for type 2 diabetes, this prescription medication has gained significant attention in longevity circles for its potential to slow biological aging. Thiel confirmed taking metformin as part of his anti-aging routine, joining other prominent figures like Harvard geneticist David Sinclair.

The science behind metformin's anti-aging potential:

• Research shows diabetics on metformin live longer than healthy controls not taking the medication—a paradoxical finding that sparked intense interest

• The drug improves insulin sensitivity, reduces inflammation, and mimics metabolic effects of caloric restriction

• Animal studies demonstrate it restores muscle and decreases fat in aging subjects

• Currently the first drug being tested specifically for aging in the TAME (Targeting Aging with Metformin) trial

However, potential side effects include lowered testosterone levels and gastrointestinal discomfort, making medical supervision essential. Metformin appears to enhance and mimic the benefits of fasting at the cellular level.

2. Human Growth Hormone (HGH)

Peter Thiel publicly confirmed taking HGH during a 2014 Bloomberg TV interview, explaining his rationale: "maintain muscle mass, less likely to get bone injuries and arthritis." Notably, he said on Bloomberg TV he was taking an HGH “pill.” (Most medical HGH therapy is injectable; oral claims can vary by product and aren’t equivalent to prescription GH injections.

Key considerations with HGH:

• May help preserve muscle mass and bone density in aging adults

• People with high natural HGH tend to have shorter lifespans than those with naturally lower levels

• The Mayo Clinic lists potential side effects including carpal tunnel syndrome, swelling, joint pain, and increased cancer risk

• Remains a prescription-only controlled substance requiring careful medical monitoring

Despite the risks, Thiel's choice reflects his willingness to pursue unconventional interventions backed by potential benefits. His approach differs from more conservative longevity practitioners who rely solely on supplements and lifestyle modifications.

Probable: Foundational Longevity Supplements

3. Resveratrol

Resveratrol, the polyphenol found in red grape skins, has become synonymous with longevity science. The compound activates sirtuins—genes associated with longevity and cellular protection.

Evidence-based benefits:

• Research shows resveratrol lowers blood pressure and improves endothelial function

• Anti-inflammatory properties reduce chronic inflammation throughout the body

• Studies suggest neuroprotective effects that may protect against Alzheimer's

• Activates longevity pathways similar to caloric restriction

The primary challenge with resveratrol is bioavailability—the body doesn't absorb it efficiently without enhancement. Longevity experts who take resveratrol often combine it with piperine or use specialized formulations for better absorption.

4. Omega-3 Fatty Acids (EPA/DHA)

Omega-3 fatty acids carry the strongest evidence of any longevity supplement, making them highly probable in any science-focused protocol like Thiel's. Research published in the American Journal of Clinical Nutrition found higher blood omega-3 levels were associated with an estimated 4.7-year increase in life expectancy.

Why omega-3s are essential:

• David Sinclair recently added omega-3s to his protocol. While Sinclair has not specified his exact dose, other longevity experts report taking around 2g EPA and 1.5g DHA daily

• Benefits extend to brain health, with studies showing improved cognitive function and reduced dementia risk

• Target inflammation—a primary driver of aging

• May even lengthen telomeres, the protective caps on chromosomes that shorten with age

Quality matters significantly with fish oil supplements. Research indicates approximately 50% of fish oils exceed oxidation limits, potentially causing more harm than benefit. Look for third-party tested products with verified freshness and purity.

5. Vitamin D3 + K2

Given that over 40% of U.S. adults are deficient in vitamin D, supplementation is nearly universal among health-conscious individuals. Thiel works with a personal trainer regularly, and vitamin D's role in bone density and muscle function makes it highly probable in his routine.

The longevity evidence:

• Animal studies show vitamin D can increase lifespan significantly in research models

• A meta-analysis of over 75,000 participants found a 16% reduction in cancer deaths among those supplementing

• Standard dosing ranges from 4,000-5,000 IU daily combined with vitamin K2 (180-360mcg)

• K2 ensures calcium is directed to bones rather than accumulating in arteries

The vitamin D and K2 combination represents smart supplementation—addressing a common deficiency while maximizing benefits through nutrient synergy.

6. Creatine Monohydrate

Creatine is the most studied performance supplement in existence, with over 500 peer-reviewed studies confirming its benefits. While traditionally associated with athletes, creatine's cognitive benefits and anti-aging potential make it increasingly popular in longevity circles.

The longevity data:

• Animal studies demonstrate approximately 9% increase in lifespan in mice supplementing with creatine

• Beyond physical performance improvements of 5-15% in high-intensity exercise

• Supports brain health with studies showing 15% faster reaction times and improved memory

• Improves glucose uptake and insulin sensitivity

For those who want the benefits without mixing powders, creatine gummies offer a convenient alternative. XV1's Creatine Gummies deliver 1,000mg creatine monohydrate per gummy—naturally flavored with real fruit, vegan, and free from artificial fillers.

7. CoQ10 (Coenzyme Q10)

Coenzyme Q10 plays a critical role in cellular energy production, and natural levels decline with age. For someone like Thiel focused on preserving physical vitality, CoQ10 supplementation aligns with his stated goals of maintaining muscle mass and preventing age-related decline.

Cardiovascular and metabolic benefits:

• Research shows CoQ10 supplementation produces a 43% reduction in cardiovascular events

• A 42% decrease in all-cause mortality among heart failure patients

• Improves insulin sensitivity and reduces inflammatory markers significantly

• Supports mitochondrial function throughout the body

Standard dosing ranges from 100-200mg daily. The ubiquinol form offers better bioavailability in older adults, though ubiquinone remains effective and more affordable.

Anti-Inflammatory and Antioxidant Support

8. Curcumin (from Turmeric)

Curcumin, the active compound in turmeric, addresses one of aging's primary drivers: chronic inflammation. Given Thiel's evidence-based approach to anti-aging, curcumin's extensive research profile makes it a likely component of his regimen.

Clinical benefits demonstrated:

• An 18-month UCLA trial in adults aged 50-90 showed that a specialized form of curcumin improved memory and attention

• Increases antioxidant enzyme activity significantly

• May extend the lifespan of aging cells by reducing cellular senescence

• For arthritis and joint pain, curcumin performs comparably to anti-inflammatory medications

Like resveratrol, bioavailability presents the main challenge. Effective supplementation requires either piperine (black pepper extract) or specialized delivery systems to achieve therapeutic levels.

9. Magnesium

Nearly half of Americans don't consume adequate magnesium, yet this mineral participates in over 300 enzymatic reactions in the body. For anyone prioritizing longevity—especially those who exercise regularly like Thiel—magnesium supplementation is nearly mandatory.

Why magnesium matters for longevity:

• A meta-analysis of over 1 million people found magnesium intake associated with reduced all-cause mortality

• Significantly reduces blood pressure in those with hypertension

• Improves sleep quality by reducing time to fall asleep

• Research shows magnesium targets multiple aging pathways, from genomic instability to cellular senescence

The most bioavailable forms include magnesium glycinate, citrate, and malate. Standard dosing follows the RDA of 310-420mg daily depending on age and gender.

10. Fisetin

Fisetin represents the cutting edge of longevity science, and tech-savvy investors like Thiel are likely aware of its potential. This flavonoid was identified as the most potent senolytic among flavonoids tested in Mayo Clinic research—meaning it clears "zombie" senescent cells that accumulate with age and drive inflammation.

Emerging evidence:

• Animal studies show fisetin extended both median and maximum lifespan

• Additional research demonstrates improved arterial function

• Studies indicate approximately 40% increase in BDNF—the brain growth factor associated with learning and memory

• Works through senolytic mechanisms to clear damaged cells

Many longevity practitioners cycle fisetin rather than taking it daily, with protocols ranging from daily low doses to intermittent high-dose pulses.

11. Vitamin C

Vitamin C serves as a foundational antioxidant that regenerates other protective compounds including glutathione and vitamin E. Research shows vitamin C intake correlates with lower all-cause mortality in population studies.

Multiple benefits beyond immune support:

• Essential for collagen production—critical for skin strength and regeneration

• Triples iron absorption from plant foods

• Associated with better memory and attention in cognitive assessments

• Works synergistically with other antioxidants to protect cellular structures

For those seeking comprehensive nutritional support including vitamin C and other antioxidants, XV1's Green Superfood Powder delivers organic greens, red antioxidants, immune support, and probiotics in one daily scoop—filling common nutritional gaps without the complexity of multiple supplements.

Building Your Longevity Protocol: The XV1 Approach to Complete Wellness

Peter Thiel represents one approach to longevity—prescription medications and private protocols guided by personal physicians. But you don't need a billionaire's resources to support healthy aging. The key insight from analyzing longevity stacks is that consistency matters more than complexity. Extensive supplement protocols may generate headlines, but longevity physicians emphasize that lifespan and healthspan are impacted more through exercise, sleep, and nutrition than supplementation alone. Supplements support the fundamentals—they don't replace them.

Start with foundational compounds backed by the strongest evidence. Omega-3s offer the most compelling longevity data, with population studies linking optimal blood levels to years of additional life expectancy. Vitamin D addresses a deficiency affecting over 40% of adults, with research showing significant reductions in mortality when levels are optimized. Magnesium participates in hundreds of enzymatic reactions essential for cellular function, and supplementation correlates with reduced all-cause mortality in large meta-analyses.

For those focused on performance and recovery, creatine monohydrate stands as the most researched supplement in existence. Beyond the 5-15% strength improvements documented in over 500 studies, creatine supports cognitive function, speeds reaction times, and shows lifespan extension in animal models. XV1's Creatine Gummies make daily supplementation effortless—1,000mg per gummy, vegan, naturally flavored with real fruit, and free from artificial fillers. No mixing, no mess, just science-backed creatine in a convenient format.

Complete wellness requires comprehensive nutritional support. Most people don't consume adequate fruits and vegetables, creating micronutrient gaps that accelerate aging. XV1's Green Superfood Powder addresses this reality with organic greens, red superfruit antioxidants, B-vitamins, vitamin C, turmeric, reishi mushrooms, and an advanced probiotic blend. One daily scoop supports digestion, immune function, and sustained energy without caffeine—compatible with vegan, keto, paleo, and intermittent fasting lifestyles.

The XV1 philosophy centers on simplicity backed by science. Every product is third-party tested, manufactured in FDA-registered facilities, and formulated without fillers or artificial additives. The 90-day money-back guarantee means you can try risk-free and feel the difference. Whether you're starting with a single foundational supplement or building a comprehensive stack, XV1 offers clean, effective formulas designed for daily consistency.

Advanced compounds like resveratrol offer targeted support for those pursuing optimal healthspan. Longevity experts increasingly take resveratrol for its sirtuin-activating properties and cardiovascular benefits. The challenge lies in bioavailability—resveratrol requires enhancement for effective absorption. Quality matters, and XV1's approach ensures you receive research-backed dosages in forms your body can actually use.

For those seeking cellular health optimization, understanding the fundamentals becomes essential. Cellular repair supplements work through multiple mechanisms: supporting mitochondrial energy production, reducing oxidative stress, clearing senescent cells, and promoting tissue regeneration. The goal isn't just adding years to life, but maintaining vitality, cognitive function, and physical capability throughout those years.

Building your protocol should follow a logical progression. Start with addressing common deficiencies—vitamin D, magnesium, omega-3s. Add foundational performance support like creatine if you exercise regularly. Layer in comprehensive greens to fill nutritional gaps. Only then consider advanced compounds like resveratrol, CoQ10, or senolytics. This approach builds sustainable habits rather than overwhelming yourself with dozens of supplements at once.

The longevity and vitality collection at XV1 makes this progression simple. Whether you need one product or several, subscription flexibility lets you edit, skip, or cancel anytime. No contracts, no hidden fees—just science-backed nutrition delivered to your door on your schedule.

Complete wellness extends beyond supplements to include sleep optimization, stress management, regular movement, and meaningful social connections. Supplements enhance these foundations, they don't replace them. Peter Thiel's approach, with its prescription medications and private protocols, represents one path. For most people, consistent basics deliver remarkable results: quality sleep, whole foods, regular exercise, stress management, and strategic supplementation to fill nutritional gaps and support cellular health.

XV1 exists to make those basics effortless. Clean ingredients, transparent formulations, science-backed dosages, and formats that fit your lifestyle. Start where you are, build consistency, and let the compounds work over weeks and months. Longevity isn't built in a day—it's built through small, sustainable choices repeated over time.

Frequently Asked Questions

What supplements does Peter Thiel take for longevity?

Peter Thiel has publicly confirmed taking metformin and human growth hormone (HGH) as part of his anti-aging protocol. Based on his investments in longevity research and Silicon Valley patterns, he likely incorporates foundational supplements like omega-3s, vitamin D, resveratrol, and CoQ10, though these remain unconfirmed.

How does metformin work as an anti-aging supplement?

Metformin improves insulin sensitivity, reduces inflammation, and mimics the metabolic effects of caloric restriction. Research shows diabetics on metformin live longer than healthy controls, and the drug is being tested specifically for aging in the TAME clinical trial. However, it requires medical supervision and may cause side effects.

Are the supplements in Peter Thiel's stack safe for everyday use?

The prescription medications Thiel takes (metformin and HGH) require medical oversight and carry potential risks. Foundational supplements like omega-3s, vitamin D, magnesium, and creatine have extensive safety profiles when taken at recommended doses. Always consult healthcare providers before starting new supplements, especially if you have existing health conditions.

What is the most important supplement for longevity?

Omega-3 fatty acids carry the strongest longevity evidence, with research linking optimal blood levels to approximately 4.7 years of additional life expectancy. The benefits extend to cardiovascular health, brain function, and inflammation reduction. Quality matters significantly—choose third-party tested products with verified purity and freshness.

How can I build a longevity supplement stack on a budget?

Start with foundational supplements that address common deficiencies and have strong evidence: omega-3s, vitamin D3 with K2, and magnesium. Add creatine for cognitive and performance benefits. Use a comprehensive greens powder to fill nutritional gaps. Layer in advanced compounds like resveratrol and CoQ10 as budget allows.