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 116 reviews
(4.5)|
116 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.
Current price is $19.2910.7 ¢/ea
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Columbus, 43215
Arrives by Wed, Feb 4
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Sold and shipped by Holly Hill Health Foods
4.701954397394137 stars out of 5, based on 615 seller reviews(4.7)
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Shipping, arrives by Sat, Jan 31 to Columbus, 43215
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$17.99
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Shipping, arrives by Sat, Jan 31 to Columbus, 43215
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Items may be delivered on different dates

Customer ratings & reviews

4.5 out of 5 stars
stars116 ratings59 reviews
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Reviews summary

Pros
  • : Offers lower cost compared to similar stores.
  • : Made with high-strength capsules.
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Showing 1-3 of 59 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
Apr 14, 2025
Tfry
Sold and shipped byiHerb
5 out of 5 stars review

Verified Purchase

Gastrointestinal issues

No problems Best on the market! I'm still having issues having bm

Helpful?5SSC28671JZ740703814