For lowering blood sugar, many trials use 250–500 mg elemental magnesium daily; keep supplement-only intake ≤350 mg unless your clinician advises.

The right magnesium supplement dose depends on age, life stage, and your total daily intake from food plus pills.

For sleep, many adults trial 200–350 mg elemental magnesium at night; stay at or below the 350 mg/day supplement limit.

For adult men, magnesium supplements should stay under 350 mg per day; aim for 400–420 mg total magnesium from food and supplements.

Daily magnesium for men is 400–420 mg; keep supplemental magnesium at or below 350 mg unless your clinician says otherwise.

Most adults on keto aim for the standard RDA of magnesium from food, using small supplemental doses if intake falls short.

During pregnancy, target 350–360 mg/day of magnesium from all sources; keep supplement-only doses ≤350 mg unless your clinician advises.

No set dose exists for magnesium in RLS; stay within the 350 mg/day supplement limit unless your clinician advises otherwise.

There’s no set therapeutic dose for nerve pain; many adults trial 200–350 mg elemental magnesium daily, staying under the 350 mg supplement UL.

Target 200–350 mg elemental magnesium daily for mood; stay under the 350 mg supplement cap unless your doctor advises otherwise.