Bioavailability: Swallowed Is Not the Same as Absorbed
Bioavailability is the proportion of an ingested compound reaching circulation in active form, and for many supplement ingredients it i
10 June 2026Read →
Reading a Supplement Facts panel properly — serving sizes, salt forms, %DV, extract ratios, proprietary blends and capsule-size limits.
Bioavailability is the proportion of an ingested compound reaching circulation in active form, and for many supplement ingredients it i
A 10:1 extract means ten parts raw material produced one part extract; standardisation specifies what percentage of a named active comp
A proprietary blend lists several ingredients under one total weight, so you can see what is present but not how much of each.
A size 0 capsule holds roughly 400 to 500 mg of powder and a size 00 around 600 to 800 mg, which physically limits what any once-daily
The %DV column shows how much a serving contributes to a reference daily intake. It exists for vitamins and minerals but not for most b
Listing the same compound in two different forms creates two separate label lines, which makes a panel appear to contain more distinct
Many amino acids and minerals are sold bound to another molecule, meaning only a fraction of the listed weight is the compound you actu
A panel gives you the serving size, the amount of each ingredient per serving, percentage of Daily Value where one exists, and what the