LambertsMagAsorbPowder provides highly bioavailable magnesium in the form of citrate (as a comparative study with similar supplements from other companies proved that the absorption of LambertsMagAsorb was superior to those of other companies). The pharmaceutical form of the powder was chosen for people who require high amounts of magnesium and for people who are unable to swallow large tablets. 5.5 grams of powder provide 100% of the Recommended Daily Intake of Magnesium (dosing scoop included). Suitable for Vegetarians. Soluble white powder. Each 5.5 grams of powder yields: Suitable for vegetarians Allergies: None. Precautions: Magnesium consumption exceeding 400mg may cause mild gastrointestinal disturbances in sensitive individuals.