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Supplements worth taking after 40

Not a list of everything available. A prioritized tier list based on evidence quality, relevance to adults over 40, and value relative to cost. Start with Tier 1 — the rest is optional.

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CreusLife Editorial Team
Certified strength & conditioning specialist (CSCS) · Health optimization researcher · 12 years in performance nutrition
Last updated: May 2026 · Affiliate disclosure
ℹ️ Informational only — not medical advice. Some links are affiliate links at no extra cost to you. Full disclosure.
💡Supplements do not replace measurement, sleep, adequate protein, or resistance training. They work best as additions to a solid foundation — not substitutes for it.
Tier 1 — Strong evidence, relevant to most adults over 40
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Creatine monohydrate — 5g/day Strong evidence
The most evidence-backed supplement for adults over 40. Preserves muscle, improves strength, supports cognitive function, and is safe at any age. 700+ published studies. 5g/day, no loading. Full evidence review →
View on Momentous →
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Vitamin D3+K2 — 2,000–5,000 IU/day Strong evidence
Test your level first. ~40% of US adults are deficient. K2 (MK-7 form) directs calcium to bone rather than arteries — take them together.
View on Momentous →
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Omega-3 (EPA+DHA) — 2–4g/day Strong evidence
Triglyceride reduction, cardiovascular support, anti-inflammatory, cognitive protection. Get an omega-3 index test before supplementing to confirm you're actually deficient.
View on Momentous →
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Magnesium glycinate — 300–400mg/night Strong evidence
~70% of US adults are deficient. Involved in 300+ enzymatic reactions. Glycinate form is best tolerated and absorbed. Improves sleep quality, regulates cortisol, supports bone density and muscle function.
View on Momentous →
Tier 2 — Moderate evidence, goal-specific
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Urolithin A (Mitopure) — 500mg/day Moderate evidence
Activates mitophagy — cellular cleanup of damaged mitochondria. Clinical trials show improved muscle endurance in adults 45+. 15+ years of research from Timeline Nutrition. Best evidence in older adults.
View Momentous →
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Ashwagandha (KSM-66) — 600mg/day Moderate evidence
RCT evidence for cortisol reduction and improved stress response. Modest testosterone support in men. Women: generally safe; not recommended during pregnancy.
View on Momentous →
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Collagen peptides — 10–15g/day with vitamin C Moderate evidence
Joint and connective tissue support. Evidence strongest for joint pain reduction in athletes. Not a protein replacement — lacks complete amino acid profile. Take separately from protein meals.
Tier 3 — Emerging or niche evidence (use with context)
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Ecdysterone (beta-ecdysterone) Emerging evidence
Phytoecdysteroid from spinach and quinoa. Animal studies show significant anabolic effects; human RCTs are limited but directionally positive. Low risk profile. Full evidence review →
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NMN / NR (NAD+ precursors) Emerging evidence
Longevity-adjacent. Animal studies strong; human data still developing. Expensive relative to current evidence. Not a priority until Tier 1 and 2 are established.
Genetics + labs

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Supplementation after measurement

Preferred supplement partner: Momentous

Supplements should come after the baseline: labs, sleep, training, nutrition, and symptoms. For the supplements CreusLife recommends most often, Momentous is now the preferred partner because it offers focused products for performance, sleep, recovery, and longevity.

Start with the Momentous main store if you want to choose from the full lineup.

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