The iVitaLab Blog

Evidence-based supplement guides. No hype, no paid placements - just what the science actually says.

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New This Month

May 2026

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Best Of Guides

Top-rated picks by category

Longevity

Best Vitamins for Longevity 2026

The six supplements with the strongest evidence for living longer - from D3+K2 to NAD+ and Urolithin A.

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Gut Health

Best Gut Health Supplements 2026

Three supplements that actually moved the needle after 90 days of testing: L-Glutamine, Akkermansia, and Nattokinase.

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Brain Health

Best Supplements for Brain Health 2026

Evidence-backed picks for focus, memory, and long-term cognitive protection. Ranked by clinical data, not marketing.

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Sleep

Best Supplements for Sleep 2026

Magnesium, glycine, GABA, and L-glutamine: the sleep supplements with real mechanisms, not just relaxation marketing claims.

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Heart Health

Best Supplements for Heart Health 2026

Three supplements with real cardiovascular clinical data: CoQ10, nattokinase, and omega-3 cod liver oil.

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Men's Health

Best Supplements for Men Over 40

CoQ10, NAD+, D3+K2, and zinc picolinate targeted at the specific metabolic and hormonal changes after 40.

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Women's Health

Best Supplements for Women Over 40

D3+K2, magnesium, NAD+, and liposomal glutathione for the specific challenges of women in midlife.

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Longevity

Best Urolithin A Supplements 2026

Mitopure has Phase 1 human trial data for mitochondrial health. Here's how to pick a quality Urolithin A and who actually needs it.

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Immunity

Top Immunity Supplements 2026

Strengthen your immune defenses with these top picks for 2026. Evidence-ranked, not popularity-ranked.

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Longevity

How to Build a Longevity Stack

A tiered approach starting where the evidence is strongest, with real monthly costs at each level.

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Ingredient Science

Head-to-head comparisons & form breakdowns

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Supplement Deep Dives

Single-ingredient breakdowns with clinical data

Gut Health

Akkermansia: The Gut Longevity Supplement

Centenarians consistently have more of it. A Nature Medicine trial confirmed its metabolic benefits. Here's what to know.

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Immune Health

AHCC: Immune Mushroom Extract

Over 30 human clinical trials, used in Japanese hospitals for 25 years, and two trials showing HPV clearance.

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Longevity

Spermidine for Longevity

This polyamine triggers autophagy. A PRISM trial found cognitive improvements in older adults. Here's the honest assessment.

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Longevity

Quercetin: The Senolytic

Zombie cells drive chronic inflammation. Quercetin has human clinical data for clearing them through pulse dosing.

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Minerals

Boron for Testosterone & Bones

At $12.95 per month, boron increases free testosterone by reducing SHBG and improves vitamin D activation efficiency.

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Heart Health

Nattokinase for Blood Pressure

An enzyme from fermented soybeans with measurable blood pressure reduction and fibrinolytic activity in clinical trials.

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Detox

NAC: Detox & Cellular Health

Used in hospital ERs for liver protection, NAC is also a powerful glutathione precursor for daily antioxidant support.

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Brain Health

Phosphatidylserine for Brain

An FDA-qualified health claim, multiple RCTs on memory, and documented cortisol reduction in athletes. This one earns its place.

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Anti-Aging

L-Carnosine Anti-Aging

Anti-glycation, muscle pH buffering, and neuroprotection. Especially valuable for vegans who miss dietary carnosine.

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Performance

L-Carnitine for Fat & Heart Health

The fat burning story is partially true. The cardiac story is more compelling and less talked about.

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Heart & Vascular

Nitric Oxide Supplements

After 40, your blood vessels lose their ability to dilate. Here's why NO declines - and what actually reversed it for our team.

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Vitamins

Tocotrienols: The Better Vitamin E

Most vitamin E supplements use only tocopherols. The tocotrienol family has stronger evidence for cardiovascular and brain protection.

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Brain Health

Ginkgo Biloba for Memory

The most researched herbal nootropic has a nuanced evidence base. Here's who benefits and who won't feel much.

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Longevity

TMG: Methylation & NAD Support

NAD+ synthesis depletes methyl groups. TMG replenishes them and also reduces homocysteine. It's the missing half of every NAD+ protocol.

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Immune Health

Zinc Picolinate

Zinc oxide (in most multivitamins) absorbs poorly. Picolinate absorbs significantly better and the immune effects reflect the difference.

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Longevity

Resveratrol & Longevity

A Harvard professor has taken 1 gram daily for years. Here's the mechanism - and what high-dose resveratrol actually does to how you feel.

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Guides & Testing

Real-world results & how-to guides