Magnesium glycinate and magnesium citrate are different ingredient forms found on supplement labels. This guide focuses on the product details you can compare: the listed magnesium source, amount per serving, serving size, format and other ingredients.
Comparing the ingredient names
A product may list magnesium glycinate, magnesium bisglycinate or magnesium citrate as its magnesium source. Some formulas combine more than one source. Read the complete Supplement Facts panel rather than relying only on the name on the front of the bottle.
Check the labeled magnesium amount
Compare the amount listed for magnesium in the Supplement Facts panel together with the serving size. A serving may consist of more than one capsule or tablet, or a measured quantity of powder or liquid. Package weight and the magnesium amount per serving are different measurements.
Compare formats and package sizes
- Capsules and tablets: check the number per serving and total count.
- Powders: check the serving measure, flavor, net weight and mixing instructions.
- Liquids: check the serving volume, bottle size and storage instructions.
- Combination formulas: check every listed magnesium source and any additional ingredients.
Read the full product label
Review other ingredients, allergen statements, directions, warnings and storage requirements for the specific product. Do not assume two products have identical ingredients or serving sizes because they use the same magnesium form. This guide does not rank either form by absorption, digestive effects or health outcomes.
Explore magnesium products
Browse magnesium glycinate supplements, magnesium citrate supplements or the broader magnesium collection. For more label details, read What to Look for on a Magnesium Supplement Label.