Caffeine Capsules
Research: 6/6Safety: 4/5$1/month
Reliable energy and focus boost. Third-party tested for quality and purity.
Also known as: Caffeine anhydrous, 1,3,7-trimethylxanthine
Evidence Scores
Research Quality6/6 — High-Quality Meta-Analyses
Safety4/5 — Likely Safe / Minor Side Effects
Trust Index: 7/10Transparency Score
Full Disclosure: Affiliate link ahead. We get paid if you buy. Science says it works anyway.
Recommended Dose
100-200mg (1-2 cups coffee)
Health Outcome Impact
Focus & Concentration5/5
Energy & Metabolism5/5
Endurance & Recovery4/5
Weight Management2/5
Where to Buy
Monthly Cost:$1
Research References
Research last reviewed: 2026-02-16
Products last reviewed: 2026-03-02
Prices last updated: 2026-03-18
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