Source-backed LabelLens guides for reading supplement labels and comparing declared amounts, forms, and costs.
Magnesium compounds can weigh far more than the magnesium they contribute. Learn which label number LabelLens compares and why compound weight is not a substitute.
Reviewed 2026-07-18Read guide →Citrate, glycinate, oxide, chloride, and other forms differ, but the form name alone cannot determine the best product for every person.
Reviewed 2026-07-18Read guide →A 1,000 mg fish-oil headline does not necessarily mean 1,000 mg of EPA and DHA. Follow the Supplement Facts panel to compare like with like.
Reviewed 2026-07-18Read guide →Fish and algal oils can both supply long-chain omega-3s, but their EPA/DHA profiles and label details vary by formulation.
Reviewed 2026-07-18Read guide →Omega-3 chemical form can affect absorption under study conditions, but it should be interpreted alongside dose, meal context, label transparency, and price.
Reviewed 2026-07-18Read guide →Bottle price alone is a poor comparison. Here are the exact denominators LabelLens uses for servings, active amounts, and market-specific offers.
Reviewed 2026-07-18Read guide →
