Evidence Reviews

Small pinch of fine white powder beside a stainless measuring spoon
DAO Enzyme Units vs Milligrams: What the Label Is Counting
DAO enzyme units and milligrams measure different things. A 500 mg kidney serving is tissue weight, not enzyme activity, and the two don't convert into each other. Read more...
Halved lemon beside a small pile of dark rust coloured powder
Iron and Vitamin C: What to Take Together and What to Space Out
Iron absorbs better with vitamin C and competes with calcium, zinc and amino acids, so leave an hour or 2 between your iron gummy and the rest. Read more...
Dried milk thistle flower head beside a pinch of pale yellow seed powder
Milk Thistle 500mg Standardized to 80% Silymarin: What You Actually Get
A 500 mg milk thistle extract standardized to 80% silymarin delivers 400 mg of silymarin per serving, not 500 mg. Here is the arithmetic. Read more...
Cracked black walnut husk fragments around a single dark amber drop
Black Walnut Extract for Kids: Reading mL, Drops and Missing Ratios
Kids black walnut doses are printed as volumes of 1 mL and 2 mL, not milligrams, and neither kids formula states an herb to extract ratio. Read more...
Empty ceramic plate with folded cutlery beside a small ramekin
With Food or Empty Stomach: What the Supplement Label Decides
Take a supplement with food when the label says so. The printed instructions here read 2 gummies after meals and 2 capsules daily, with no meal attached. Read more...
Twelve amber gummy cubes arranged in two neat rows on off white paper
How Many Servings Are in a Gummy Bottle: The Days Supply Math
Divide the count by gummies per serving. 90 gummies at 2 a day is 45 days, and 60 gummies at 2 a day is 30 days, not two months. Read more...
Glass dish of pale resin granules with two white capsules resting on a folded paper sheet against a warm backdrop
Zinc Carnosine and Mastic Gum: What the Research Actually Covers
Two ingredients that get bundled into gut formulas for different reasons. One is a chelate that stays in the stomach, the other is a resin with a long traditional record.... Read more...