Premium Magnesium Citrate Capsules - Powerful 500mg Magnesium Oxide & Citrate Supplement - Helps Support Healthy Bones, Muscles, Teeth, Energy & Relaxation - 120 Vegetable Capsules

Clinical trials typically use 200-400mg elemental magnesium daily. Sunergetic Magnesium Oxide Citrate 500mg delivers 500mg magnesium per 2-capsule serving; 60 servings per bottle, which we classify as Full relative to that range.

See the "Also consider" section below for two alternatives. Choose based on form preference (Capsule (Vegetable) vs alternatives), dose adequacy, and third-party testing.

Yes — GMP manufactured; third-party testing not publicly disclosed. Third-party testing verifies ingredient identity and label accuracy.

Yes — Amazon Subscribe & Save is available for this product. Enrolling locks in a recurring delivery at a reduced per-unit price.

Magnesium can interact with antibiotics (tetracyclines, quinolones) — separate by 2-4 hours. Magnesium may enhance the muscle-relaxant effect of calcium channel blockers. Bisphosphonates (osteoporosis medications) should be separated from magnesium. Generally safe with most other medications at this dose.

Magnesium at 500mg daily has favorable long-term safety in adults with normal kidney function. Users with chronic kidney disease should avoid high-dose magnesium supplementation without physician oversight due to reduced excretion capacity. No known long-term toxicity in healthy adults.

Magnesium oxide is known to cause loose stools or diarrhea in some users — this is why it's commonly used as a laxative. Taking with food reduces GI effects. Citrate form has milder GI effects. Start with 1 capsule daily to assess tolerance before moving to 2 capsules.

Pairs well with calcium (2:1 calcium:magnesium ratio), Vitamin D, Vitamin K2, and zinc for bone health stacks. Also pairs with B-complex for energy support. Avoid stacking with other magnesium products to prevent exceeding 500-600mg daily total.

Take 2 capsules daily with food to minimize GI effects and improve absorption. Evening dosing supports relaxation and sleep benefits. Separate from antibiotics and bisphosphonates by 2-4 hours. Stay well hydrated. Consult physician if you have kidney disease.

Sleep and muscle relaxation benefits often emerge within 1-2 weeks of daily supplementation. Magnesium deficiency correction in cellular stores takes 4-12 weeks. Bone health benefits are cumulative over months. Benefits depend heavily on baseline magnesium status.