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Large daily supplement stacks

Not enough evidenceUpdated November 1, 2026 · 6 sources · Written by the AumniVIDA team

What is large daily supplement stacks?

A supplement stack is a set of pills and powders taken every day, often dozens at once, such as vitamins, minerals, fish oil, NAD boosters and plant compounds. Longevity enthusiasts build large stacks hoping to slow aging. Large trials find little or no benefit for death, heart disease or cancer from most vitamins, and a few cause harm.

Listed here because well-known people have tried it on themselves. Trying something is not recommending it; each entry says whether the person tells others to do it.

Who has tried it

Tried by 3 people we can source: 3 kept.

Kept

What the evidence shows

Not enough evidence

No trial has tested a large personal stack, so the evidence comes from trials of single supplements and multivitamins. A review for the US Preventive Services Task Force of 84 studies and about 740,000 people found little or no benefit for cardiovascular disease, cancer or death, apart from a small drop in cancer with multivitamins [1]. In the Physicians' Health Study II, a daily multivitamin cut total cancer by 8% over 11 years in male doctors [2], and in COSMOS a multivitamin modestly slowed memory decline in older adults [3].

In observational data from 390,124 healthy US adults, daily multivitamin users did not live longer than nonusers [4]. Some single supplements cause harm. Vitamin E raised prostate cancer risk by 17% in a large trial [5], and across 78 trials, antioxidants such as beta carotene, vitamin A and vitamin E slightly raised mortality in the trials at low risk of bias [6].

Unknown: what dozens of products taken together do, how they interact with each other and with drugs, and whether newer longevity compounds such as NAD precursors help people. Supplements are not approved by the FDA for safety or effect before they are sold, and doses and purity vary by brand.

Safety

  • In the US, the FDA does not approve supplements before sale. Labels can be wrong, and some products contain undeclared drugs or contaminants.
  • High doses of vitamin E, vitamin A and beta carotene have raised the risk of cancer or death in trials. Beta carotene is riskiest for smokers.
  • Some supplements interact with drugs. St John's wort, fish oil, vitamin K and red yeast rice can change how blood thinners, statins and other medicines work.
  • People who are pregnant, take prescription drugs, or have kidney or liver disease should check each product with a clinician or pharmacist.
  • Fixing a measured deficiency, such as low vitamin B12 or vitamin D, is a different decision from taking dozens of products for longevity.

Common questions

How many supplements does Ray Kurzweil take?

About 70 or 80 a day, some by injection, he said in February 2026. Earlier profiles reported far higher counts.

What supplements does Bryan Johnson take?

His published protocol lists a daily stack of capsules and powders, such as his company's Essentials capsules, Longevity Mix and omega-3s. He recommends the stack to readers, and his company sells it.

What supplements does David Sinclair take?

In 2019 he described taking about 1 g of NMN and 1 g of resveratrol each morning. He presents this as his own routine, not a recommendation.

Do multivitamins help you live longer?

Not as far as the evidence shows. A large review found little or no effect on death [1], and multivitamin users in 3 big US cohorts did not live longer [4]. One trial found a small drop in cancer [2].

Can supplements be harmful?

Yes. Vitamin E raised prostate cancer risk in a large trial [5], and some antioxidants slightly raised mortality across many trials [6]. More pills also means more chances of drug interactions.

Sources

  1. 1.O'Connor EA, Evans CV, Ivlev I, et al. Vitamin and Mineral Supplements for the Primary Prevention of Cardiovascular Disease and Cancer: Updated Evidence Report and Systematic Review for the US Preventive Services Task Force. JAMA, 2022. doi:10.1001/jama.2021.15650
  2. 2.Gaziano JM, Sesso HD, Christen WG, et al. Multivitamins in the prevention of cancer in men: the Physicians' Health Study II randomized controlled trial. JAMA, 2012. doi:10.1001/jama.2012.14641
  3. 3.Vyas CM, Manson JE, Sesso HD, et al. Effect of multivitamin-mineral supplementation versus placebo on cognitive function: results from the clinic subcohort of the COcoa Supplement and Multivitamin Outcomes Study (COSMOS) randomized clinical trial and meta-analysis of 3 cognitive studies within COSMOS. Am J Clin Nutr, 2024. doi:10.1016/j.ajcnut.2023.12.011
  4. 4.Loftfield E, O'Connell CP, Abnet CC, et al. Multivitamin Use and Mortality Risk in 3 Prospective US Cohorts. JAMA Netw Open, 2024. doi:10.1001/jamanetworkopen.2024.18729
  5. 5.Klein EA, Thompson IM Jr, Tangen CM, et al. Vitamin E and the risk of prostate cancer: the Selenium and Vitamin E Cancer Prevention Trial (SELECT). JAMA, 2011. doi:10.1001/jama.2011.1437
  6. 6.Bjelakovic G, Nikolova D, Gluud LL, et al. Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases. Cochrane Database Syst Rev, 2012. doi:10.1002/14651858.CD007176.pub2

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