Supplement Comparator 2026: Side-by-Side (20+ Supplements)

Affiliate links: as an Amazon Associate and through other programs, we earn from qualifying purchases, at no extra cost to you. Learn more.

Compare 20+ popular supplements side-by-side — dose, onset, evidence level, contraindications, and top-rated brand. Filter by category or minimum evidence level.

How to Use the Comparator

  • Category filter — narrow to Sleep, Sports, Stress, Cognitive, etc.
  • Evidence level — show only A+ supplements (gold-standard RCT data) or include B-grade.
  • “View →” button — opens our top-pick brand on Amazon (we earn small commission, you pay the same).

What the Evidence Grades Mean

  • A+: 4+ well-designed human RCTs with consistent results. Strong recommendation.
  • A: 2-3 human RCTs with positive results. Recommended.
  • B+: 1-2 RCTs OR strong mechanistic evidence. Worth trying.
  • B: Limited human data, promising mechanism. Use with caution.

Related Tools & Guides

Level up your recovery

Supplements work best alongside the right recovery tools. Explore our gear guides:

❄️ Best Cold Plunge Tubs →🔥 Best Infrared Saunas →💡 Best Red Light Therapy →

Frequently Asked Questions

▸ How does the supplement comparator work?
Pick a category filter or evidence-level filter. The table shows 20+ supplements side-by-side with dose, onset time, evidence grade (A+/A/B+/B), best-for, contraindications, cost-per-day, and top-rated brand link.
▸ What do the evidence grades mean?
A+ = 4+ well-designed human RCTs with consistent results. A = 2-3 human RCTs with positive results. B+ = 1-2 RCTs OR strong mechanistic evidence. B = limited human data, promising mechanism.
▸ Which supplements have the strongest evidence?
Tier A+ (gold-standard RCT data): creatine, omega-3, vitamin D3+K2, methyl B12, whey protein. These are foundational for nearly everyone.
▸ Can I compare supplement brands or just types?
The Comparator shows supplement TYPES (e.g., "Magnesium Glycinate"), and the "Top Brand" column links to our recommended brand for that type. To compare specific brand reviews, see our individual review articles.