BoneScience Blog — supplement labels

We read 11 human resveratrol trials plus the key absorption and safety studies. Results are mixed, effects were small, and well under 1% of a dose reaches the blood unchanged.

500 mg of magnesium glycinate is not 500 mg of magnesium. A plain guide to elemental magnesium by form, NIH daily amounts and the 350 mg supplement upper limit, what absorption studies found, and label checks for any brand.

Two black ginger bottles can both say 500 mg and contain different things. Seven checks on the back label: extract versus powder, the flavone percentages, which extracts were tested in people, proprietary blends, the Latin name, the certificate of analysis and the fine print.