Nutrient uptake
How much of a nutrient actually gets absorbed and into the blood. It is measured by blood levels over time after a dose, and it is why two products with the same label amount can differ.
45 supplements analyzed and ranked by clinical evidence.
Supplements45
Supplement Evidence
Main Effects
Riboflavin40020
Iron markers +9
+57 pp anemia
B2 status/iron stores
Iron status ↑
B2/Fe deficiencies ↓
Moderate
Biotin7314
Biotin status ↑, deficiency markers ↓
Catabolites ↑; uptake ~100%
Absorption/excretion ↑
+100% bioavailability
Deficiency markers ↓
Moderate
Citrulline23013
↑Arg/NO uptake
+1840 citrulline
Gut perfusion/ injury
AA availability +30-40%
Blood flow/FMD ↑
Moderate
Black Pepper3713
Carotenoids uptake +4.8x
Drug bioavailability +170%
Glucose/oxidative stress improved
Weak