Magnesium Caps 400 mg | GNC
Note: This product cannot be sold in Canada

Product Information



Magnesium is a mineral that is critical for energy production and metabolism, muscle contraction, nerve impulse transmission and bone mineralization. It is a required cofactor for an estimated 300 enzymes. Among the reactions catalyzed by these enzymes are fatty acid synthesis, protein synthesis and glucose metabolism. Magnesium status is also important for regulation of calcium balance through its effects on the parathyroid gland.*


Nutrition Facts
Serving Size  1 Capsule(s)
Servings Per Container  180

Amount Per Serving     % DV

Magnesium (from Magnesium Oxide, magnesium citrate, and magnesium aspertate)  400 mg   **

** Daily Value (DV) not established.
Other Ingredients
Rice Flour, Gelatin (capsule), Magnesium Stearate (Vegetable Source)
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens
Label (click image to enlarge)

How To Use

As a dietary sup ple ment, take 1 capsule with or between meals. Consider taking these other NOW® products: Calcium, Boron, Vitamin D and Zinc.
For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.
Store in cool, dry place.
NOW FOODS, 395 S. Glen Ellyn Rd. Bloomingdale, IL 60108, USA


5.0 / 5.0
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Keeps my digestive system in order
Magnesium is a great way to regulate your intestinal system. I take it every morning with a large glass of ice water and it does the trick. You also need it for bone health. GNC makes a good product that helps keep my healthy.
May 6, 2018
7 months ago
Feeling stronger in just 2 weeks
I'm feeling better after only 2 weeks on this! Terrific price and product!
April 28, 2018
7 months ago
Love this magnesium! Can tell a major difference from the previous brand I was using.
July 4, 2017
1 year ago
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Is magnesium helpful with leg cramps ?
A shopper on Jan 25, 2017