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Supplement dose, mechanism and ownership on one page

We clean official label data line by line, convert it to comparable daily doses, and link every brand to the company and parent behind it. Every number links to its source.

62,099Products
196,039Comparable dose records
518Company profiles
9Data sources
110Ranked ingredients
20Mechanism animations
Multi-dimension compareUp to 4 products side by side: daily dose, % of DV and upper limit, data source, owner. Who's behind itBrand → company → parent → ultimate owner, each link sourced, with LEI and SEC identifiers. Browse brands2,000+ brands A–Z, with the company behind each one Transparent rankingsPublic scoring rules; expand any product to see its sub-scores. No paid placement. Animated mechanismsSee the path in the body: absorption, transport, site of action, limits. Dose toolEnter your dose and see % DV, distance to the upper limit and market percentile.

Animated mechanisms: What happens to vitamin D after you take it?

What happens to vitamin D after you take it? Skin / diet Liver Kidney Intestine Bone
1/5Skin makes vitamin D under UVB light, or it is absorbed from food and supplements. At this point it is not yet biologically active.
  1. Skin makes vitamin D under UVB light, or it is absorbed from food and supplements. At this point it is not yet biologically active.
  2. The liver converts it to 25(OH)D. This is the marker that blood tests measure.
  3. The kidneys convert 25(OH)D to the active form, 1,25(OH)₂D (calcitriol).
  4. The active form promotes calcium and phosphorus absorption in the small intestine.
  5. Blood calcium and phosphate stay in the normal range, which bone needs to mineralise normally.

See all → · How it works (20)

Who's behind it

Example: how many companies stand behind one brand?

  1. Brand Nature's Way
  2. Company Nature's Way Brands, LLC
  3. Parent Schwabe North America, Inc. [source]
  4. Ultimate owner Dr. Willmar Schwabe GmbH & Co. KG [source 1] [source 2]
Ownership graph →

Rankings

Single-ingredient products scored by public rules: dose fit, label transparency, data verification, company transparency, third-party testing. Not a measure of efficacy or safety. No paid placement.

Coenzyme Q10Vitamin CFish oilVitamin DCreatineMagnesiumGinseng (Panax / American / Siberian)Vitamin EMelatoninGlucosamineGarlicCalcium

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Popular ingredients

Vitamin C8,730 productsCalcium6,913 productsVitamin B66,518 productsVitamin B126,218 productsMagnesium5,700 productsZinc5,642 productsVitamin D5,334 productsVitamin E5,249 productsVitamin B9 (folate)5,027 productsVitamin B3 (niacin)4,910 productsSodium4,696 productsVitamin B1 (thiamin)4,416 productsVitamin B2 (riboflavin)4,314 productsVitamin B5 (pantothenic acid)4,300 productsPotassium4,294 productsVitamin A4,134 products

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Dose tool · Cost calculator

Enter your dose and see % DV, distance to the upper limit and market percentile.

Enter price and dose to get cost per day, per 30 days and per 100 mg.

Cost calculator → Stacking checker →
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.
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