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
Hero image 0 of NOW Supplements, Magnesium 400 mg, Enzyme Function*, Nervous System Support*, 180 Veg Capsules, 0 of 8
Visit the NOW Store

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.
Current price is Now $16.99
You save $2.00
was $18.99
9.4 ¢/ea
Price when purchased online
  • Free 90-day returns
Subscribe, Your usuals, on your schedule, Save time and stay stocked!, $16.99
Your usuals, on your schedule
Save time and stay stocked!
One-time purchase $16.99

How do you want your item?

Try 30 days of Free Shipping with Walmart+! Choose plan at checkout.
How do you want your item?
Columbus, 43215
Arrives by Tomorrow
.
Order within 7 hr 57 min
Sold by Highland Health FoodsPro Seller
Fulfilled by Walmart
4.744421906693712 stars out of 5, based on 989 seller reviews(4.7)
Report an issue with this seller
Free 90-day returns
Other sellers
$16.07
+Free shipping
Shipping, arrives by Sat, Mar 28 to Columbus, 43215
Sold and shipped by DailyVitaPro Seller
Free 30-day returns
walmart plus

Get free delivery, shipping and more*

*Restrictions apply

Continue your search on Walmart

About this item

Product details

Specifications

Indications

Directions

Warranty

Ingredients

Warnings

Customer ratings & reviews

4.5 out of 5 stars
stars122 ratings60 reviews
How item rating is calculated
  1. 5 stars80% (97)
  2. 4 stars8% (10)
  3. 3 stars6% (7)
  4. 2 stars0% (0)
  5. 1 star7% (8)

Reviews summary

Pros
  • : Relieves muscle pain and aches.
  • : Made with high-strength capsules.
Generated by AI
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

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