Evidence Guides
Plain-English guides that rank supplements by the strength of published research — not marketing.
Best Evidence-Backed Supplements for Sleep
Which sleep supplements actually have research behind them? We rank magnesium, melatonin, L-theanine, glycine and more by the strength of published evidence — not hype.
Best Evidence-Backed Supplements for Anxiety & Stress
Which supplements for anxiety and stress actually have research behind them? We rank L-theanine, ashwagandha, magnesium and more by the strength of the published evidence — not hype.
Best Evidence-Backed Supplements for Focus & Cognition
Which focus and "nootropic" supplements actually have evidence? We rank creatine, omega-3, L-theanine and more by the strength of published cognitive research.
Best Evidence-Backed Supplements for Energy & Fatigue
Which energy supplements have real evidence — and when fatigue needs a doctor instead? We rank creatine, magnesium, vitamin D and more against the research.
Best Evidence-Backed Supplements for Muscle & Recovery
Which muscle and recovery supplements are actually backed by research? We rank creatine, protein-adjacent options and more by the strength of the evidence.
Supplements During Pregnancy & Breastfeeding: How to Think About It
How to evaluate supplements during pregnancy and breastfeeding — why "natural" doesn't mean safe, what major medical bodies say, and why every decision belongs with your OB or midwife.