NutriStack
Search every supplement,
study, and interaction.
Every claim source-linked. Type a name, a drug, a goal, or a study fragment.
4,682 source records · Read the methodology →
Pick a goal, see the evidence.
Eight curated hubs covering the most-asked supplement goals. Each one ranks supplements by evidence rating, surfaces the doses that worked in trials, and flags the interaction risks in stacks built for that goal.
Better sleep, ranked by evidence
Magnesium Glycinate, Melatonin, 5-HTP, Ashwagandha
Adaptogens with the receipts
Bacopa Monnieri, Methylfolate, Probiotics, SAMe
Nootropics that have trials behind them
Bacopa Monnieri, Creatine, Fish Oil, Fish Oil Triple Strength
Real, replicable performance effects
Beta-Alanine, Creatine, Fish Oil, Alpha-GPC
What the evidence says for heart health
Coenzyme Q10, CoQ10 Ubiquinol, Fish Oil, Fish Oil Triple Strength
What actually changes immune outcomes
Garlic Extract, Lactobacillus Rhamnosus, Probiotics, Selenium
The calcium-D-K2 trio in context
Calcium, Vitamin D3, Vitamin K1, Vitamin K2
Blood sugar and lipids with trial data
Berberine, Berberine HCl, Green Tea Extract, Iodine
Every popular claim, opened up.
The strongest PubMed-cited studies, the contrary evidence, the tier we landed on, and a one-line verdict. No hype, no hand-waving.
Does creatine actually build muscle and strength?
"Strongest evidence base of any performance supplement."
Does magnesium lower blood pressure in hypertensive adults?
"A real, modest, reproducible effect."
Does berberine lower blood glucose in type 2 diabetes?
"Effective and underrated, but interaction-prone."
Does vitamin D3 reduce respiratory infection risk?
"One of the most defensible vitamin D claims."
Does ashwagandha actually reduce serum cortisol?
"Biochemically real, clinically modest."
Do omega-3s actually reduce cardiovascular risk?
"High-dose EPA is real medicine; OTC 1g capsules in healthy adults are not."
Does L-theanine produce calm, focused alertness?
"Best in combination with caffeine."
Do zinc lozenges actually shorten the common cold?
"Form, dose, and timing all matter."
Is long-term creatine use actually safe?
"The kidney concern is a myth; the marker artifact is not."
Does vitamin K2 reduce arterial calcification?
"Mechanistically compelling, clinically unproven."
Does magnesium reduce anxiety and perceived stress?
"Worth trying, not worth overstating."
Does creatine actually improve cognition?
"A real signal that gets stronger with age or sleep deprivation."
Drug-supplement risk, at a glance.
Eight of the most-prescribed drugs against eight of the most-stacked supplements. Every cell is a real entry in the database. Hover for the verdict, click to open the full interaction page.
| Fish Oil | CoQ10 | St. John’s | Berberine | Magnesium | Iron | Zinc | Vit D3 | |
|---|---|---|---|---|---|---|---|---|
| Warfarin | ||||||||
| Levothyroxine | ||||||||
| Lisinopril | ||||||||
| Metformin | ||||||||
| Atorvastatin | ||||||||
| Sertraline | ||||||||
| Aspirin (low-dose) | ||||||||
| Semaglutide |