Health & Wellness Database
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Reviewed, scored & ranked across six metrics
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Products tested
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Curated stacks
6
Scoring metrics
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Browse all reviewsThe Foundation Stack
Vitamin D, magnesium, omega-3 — the unsexy basics that matter most.
6 supplements · 5 guides
The Cognitive Stack
Nootropics and brain-health compounds rated for real cognitive outcomes.
14 supplements · 6 guides
The Athlete Stack
Performance supplements for lifters and generalized health seekers alike.
18 supplements · 8 guides
The Sleep Stack
Sleep onset, deep sleep architecture, HRV improvement, next-day readiness.
8 supplements · 4 guides
The Longevity Stack
The Attia/Huberman-informed stack for healthspan optimization.
10 supplements · 4 guides
The Mood Stack
Adaptogens and neurotransmitter support that's actually researched.
8 supplements · 3 guides
The Immunity Stack
The daily shield protocol for seasonal defense.
9 supplements · 3 guides
The Glow Stack
Collagen, biotin, and the compounds that actually work from the inside out.
7 supplements · 3 guides
Article Library
View all guidesProduct Roundup
Best magnesium supplements: 15 brands tested
Product Roundup
Best creatine supplements: 12 brands lab-tested
Product Roundup
Best protein powders: 20 brands lab-tested
Stack Guide
The Foundation Stack: 5 supplements to start with
Stack Guide
The Cognitive Stack: nootropics for focus and memory
Product Roundup
Best sleep supplements beyond melatonin
Research Guide
Ashwagandha: the complete evidence-based guide
Product Roundup
Best omega-3 and fish oil supplements
Research Guide
Lion's Mane: NGF, BDNF, and neurogenesis
Pillar Guide
The Complete Guide to Supplement Stacks (2026)
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Recently Updated
April 2026 · Now with Amazon price linksProduct Roundup
Best Creatine Supplements 2026
4 brands now linked · 14 min read
Product Roundup
Best Protein Powders 2026
3 brands now linked · 16 min read
Product Roundup
Best Omega-3 Supplements 2026
2 brands now linked · 14 min read
Product Roundup
Best Magnesium Supplements 2026
3 brands now linked · 14 min read
Product Roundup
Best Probiotics 2026
1 brand now linked · 10 min read
Product Roundup
Best Vitamin D Supplements 2026
3 brands now linked · 10 min read
The 6 Health Britannica metrics
Every supplement is scored across the same six proposition values. This system gives you an objective, repeatable way to compare any product across any category.
Metric 01
Evidence
Strength of clinical research. Systematic reviews and RCTs weighted highest, anecdotal lowest.
Metric 02
Purity
Third-party testing, heavy metal screening, label accuracy. Does the bottle match the claim?
Metric 03
Value
Cost per clinically effective dose versus competitors. Premium justified or cheaper equal exists?
Metric 04
Efficacy
Does the product deliver the researched dose in a bioavailable form at the stated potency?
Metric 05
Safety
Side effect profile, drug interactions, long-term safety data. Conservative risk assessment.
Metric 06
Synergy
How well it integrates with other stack supplements. Absorption enhancers, cofactors, timing.
Latest reviews by stack
1
Best magnesium supplements in 2026
Glycinate, L-threonate, citrate, or oxide? Fifteen brands tested across absorption, purity, and value. The form matters more than the brand.
9.4Overall
2
Best creatine supplements
The most researched compound in sports science. Monohydrate remains king — but not all brands are equal on purity and price.
9.6Overall
3
Best protein powders: 20 brands lab-tested
Third-party lab testing revealed significant gaps between label claims and actual protein content.
9.2Overall
4
Best sleep supplements beyond melatonin
Magnesium glycinate, L-theanine, apigenin, glycine — compounds that improve sleep architecture without morning grogginess.
8.9Overall
5
Best nootropic stacks for focus and memory
Three months testing pre-built stacks and custom combinations. What actually moved the needle on sustained focus.
8.8Overall
6
Best omega-3 and fish oil supplements
EPA/DHA ratios, oxidation testing, heavy metal screening. Most fish oil oxidizes on the shelf — these did not.
8.7Overall
🏆 #1 Foundation Pick
Momentous Magnesium L-Threonate
$44.95/mo · Subscribe & save 15%
Highest bioavailability, crosses the blood-brain barrier. #1 in Foundation + Sleep + Cognitive stacks.