Magnesium Citrate

Magnesium citrate is magnesium bound to citric acid, an organic acid naturally involved in energy metabolism. It is one of the most common supplemental magnesium forms because it offers better absorption than magnesium oxide while remaining affordable and widely available.

Magnesium supports hundreds of enzymatic reactions involved in nerve signaling, muscle contraction, glucose metabolism, and energy production. Citrate improves solubility in the gut, helping magnesium dissolve and absorb more effectively than poorly soluble forms. Because citrate can draw water into the intestines, it may also support bowel regularity.

200–400 mg elemental magnesium/day. Dose refers to elemental magnesium, not total magnesium citrate compound weight. Often taken with food. Higher doses may cause loose stools, so split dosing is preferred.

Magnesium Citrate: Good absorption, affordable, and useful when bowel regularity is also a goal | Magnesium Glycinate: Better tolerated for sleep and stress goals with less laxative effect | Magnesium Malate: Better fit for energy and muscle-focused goals | Magnesium Oxide: Poor absorption; mainly useful as a laxative rather than magnesium repletion

Generally safe and well tolerated, but more likely than glycinate to cause loose stools or diarrhea at higher doses. Caution in severe kidney disease. Magnesium may interfere with absorption of some antibiotics and thyroid medication if taken too close together. This information is educational and is not medical advice.

SuppsBuddy scores magnesium citrate as a solid, acceptable-to-high quality magnesium form, especially when the product clearly discloses elemental magnesium and uses an appropriate dose. It receives lower fit scoring than glycinate for sleep-focused users but stronger relevance when digestive regularity is part of the use case.