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Nerve and muscle function support; Energy metabolism; Electrolyte balance; Relaxation support
Adults with low dietary magnesium intake or those with active lifestyles seeking daily mineral support.
Take 1 capsule once daily with 8–12 oz of water; taking with food may improve tolerance, and evening use is common for relaxation-focused routines.
Non-GMO; Gluten-Free
Magnesium serves as a cofactor for enzymes involved in energy production, nerve signaling, muscle contraction, and electrolyte balance.
Caution: May cause loose stools in some people, especially at higher intakes; take with food and reduce dose if sensitivity occurs.
Label Warning: For healthy adults 18 years and older. Consult a healthcare professional before use if pregnant or nursing, taking medication, or have a medical condition.
Who should be cautious: People with kidney concerns or on medications that may affect magnesium levels may need extra caution. Magnesium may reduce absorption of certain antibiotics and some medications if taken together; consider separating doses. Consult a healthcare provider before combining with medications.
Storage: Store in a cool, dry place.
Many users mention falling asleep easier and feeling more relaxed at night.
Several reviews note fewer muscle cramps and improved overall relaxation.
Some report relief from occasional constipation, while others say the effect does not last.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
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We believe supplements should be simple, transparent, and accessible. That’s why Nutricost focuses on quality ingredients, clear labeling, and prices that make sense — without unnecessary fillers or inflated costs.
Every product is made to support everyday routines, backed by third-party testing and a commitment to consistency you can trust.
‡Nutricost Extra-Strength Magnesium Complex contains 100% more magnesium (500 mg/serving) than Nutricost Regular-Strength Magnesium Complex (250 mg/serving).
As a dietary supplement, take 1 capsule daily with 8-12 oz of water or as directed by your healthcare professional.
Gelatin capsule, magnesium stearate (vegetable source), microcrystalline cellulose, silica.
Made and quality tested in the USA with globally sourced ingredients.
For healthy individuals 18 years and older. Consult a healthcare professional prior to use if you are pregnant or nursing, taking medication, or have a medical condition. Keep out of reach of children. Do not use if safety seal is broken or missing.
Store in a cool, dry place.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||
| Serving Size: 1 Capsule | ||
| Servings Per Container: 240 | ||
| Amount Per Serving | %DV | |
| Magnesium (as magnesium oxide, magnesium citrate, magnesium glycinate) | 500 mg | 119% |
