Supplements
What the evidence actually shows for each use — tier by tier, with dosing, forms, interactions and every source cited.
Browse by what you want help with
Sports performance18Agmatine Sulfate · Ashwagandha · Beetroot / Beet juice (Nitrate)Heart health14Beetroot / Beet juice (Nitrate) · Citrulline · Krill OilBones & joints13Boron · Boswellia · CalciumImmune support13Andrographis · Astragalus · Black Seed Oil (Nigella sativa)Brain & focus12Bacopa monnieri · Blueberry · ButterburGut health11Akkermansia muciniphila (probiotic strain) · Aloe vera · Blessed thistleEnergy & fatigue10Carnitine (L-Carnitine) · Iron · MCT Oil (Medium-Chain Triglycerides)Skin, hair & nails9Aloe vera · Calendula · L-LysineWeight management8African mango · Akkermansia muciniphila (probiotic strain) · Bitter orangeAntioxidants & ageing7Acai · Blueberry · Carnosine (L-Carnosine)General wellness6Alfalfa · Copper · FluorideMood & stress5Ashwagandha · L-Theanine · L-TryptophanSleep5Chamomile (German and Roman) · Glycine · L-TheanineWomen's health5Alfalfa · Black cohosh · Blessed thistleMen's health3Boron · Pumpkin Seed Oil · ZincAllergy & airways2Black Seed Oil (Nigella sativa) · ButterburBlood sugar2Bitter melon · ChromiumEye health2Bilberry · Vitamin A (incl. Beta-carotene)Liver2Betaine · Choline
Banned, withdrawn or restricted
13 substances here are illegal to sell as supplements in the US or EU, were withdrawn after harm, or are sold in a legal grey area. Some are still on shelves. Each page says who banned it, when, and what happened.