Evidence-graded supplement library
Know what's in the capsule.
What each vitamin, mineral, herb and compound does, how it works, how much to take, and how strong the research is. Every profile reads in about two minutes.
723profiles
169goals
6,522studies cited
61research peptides
Structure
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All 169 goals →What are you trying to fix?
Hormones & EndocrineTestosterone, estrogen, thyroid, cortisol, insulin & growth hormone.78 profilesSexual Health & FertilityLibido, function, fertility, and reproductive health.36 profilesSleep & RecoverySleep architecture, circadian, and CNS recovery.84 profilesBrain & Mental PerformanceFocus, memory, mood, and neuroprotection.186 profilesFitness & PerformanceStrength, endurance, power, and exercise output.135 profilesWeight ManagementFat loss, appetite, metabolism, and glucose control.37 profilesHeart & CirculationPressure, lipids, blood flow, and vascular health.107 profilesJoint, Bone & MobilityCartilage, tendons, bone density, and movement.53 profiles
Most researched
Full library →Start with the well-studied ones
Mg
Magnesium
Essential cofactor in 300+ enzymatic reactions, from ATP production to muscle relaxation.
Mineral12 studies
C27H44O
Vitamin D3
Steroid hormone precursor regulating ~5% of the human genome — bone, immune, and hormonal health.
Vitamin12 studies
C4H11N3O3
Creatine Monohydrate
The most-studied and effective ergogenic aid — replenishes ATP via the phosphocreatine system.
Compound12 studies
C28H38O6
Ashwagandha
Adaptogenic herb that down-regulates HPA-axis output — lowers cortisol, supports T in stressed men.
Herb11 studies
C20H24O9
Tongkat Ali
Malaysian root extract that frees bound testosterone via SHBG reduction.
Herb12 studies
C7H14N2O3
L-Theanine
Calm focus — alpha-wave amino acid from green tea that takes the edge off caffeine.
Amino Acid10 studies
Tools
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ComparePut up to four supplements side by side: dose, evidence and safety.Stack checkerBuild your stack and see which pieces conflict, overlap or pair well.Ask a questionAsk in plain English, like “what helps with sleep?”, and get an answer built from these profiles.CommunityRead and share first-hand experiences on every profile.