NOW Supplements, Magnesium 400 mg, Enzyme Function*, Nervous System Support*, 180 Veg Capsules
NOW Supplements, Magnesium 400 mg, Enzyme Function*, Nervous System Support*, 180 Veg Capsules
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NOW Supplements, Magnesium 400 mg, Enzyme Function*, Nervous System Support*, 180 Veg Capsules

4.5 stars out of 122 reviews
(4.5)|
122 ratings

Key item features

  • SUPPORTS ENERGY PRODUCTION*: Magnesium is a mineral that is critical for energy production and metabolism, muscle contraction, nerve impulse transmission, and bone mineralization.*
  • CRITICAL FOR ENZYME FUNCTION*: 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.*
  • CLASSIFICATIONS/CERTIFICATIONS: Kosher, Vegan, Soy Free, Keto Friendly, Non-GMO, Halal
  • GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
  • Packaged in the USA by a family owned and operated company since 1968.
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4.5 out of 5 stars
stars122 ratings60 reviews
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Pros
  • : Relieves muscle pain and aches.
  • : Made with high-strength capsules.
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Showing 1-3 of 60 reviews

Mar 22, 2025
ProudMomof3
5 out of 5 stars review

Verified Purchase

These Magnesium supplements by NOW seem to continue to help me, however from time to time they don't seem to work as well as others, but could just be age/ weather working against them. These particular NOW brand 400MG Magnesium caps have become a little harder for me to find in store so I've had to order the last few bottles online. Similarly to the way I had to buy a different brand Biliberry (I use for eyes) , before it became completely unavailable. Fingers crossed this isn't the same though it feels like it.

Helpful?5SSC28671JZ740703814
Nov 2, 2025
Jerseygirl
Top Reviewer
Sold byHighland Health FoodsDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Magnesium

No added fillers...actually improved my bloodwork

Helpful?5SSC28671JZ740703814
Jan 29, 2026
ann
Sold byHighland Health FoodsDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Like; Great for nerve numbness

Helpful?5SSC28671JZ740703814