Magnesium L-Threonate (90 per Bottle): 30-Day Supply

Magnesium L-Threonate

2000 mg
  • 90 Capsules
  • $34.97
  • $46.65 (Save 25%)
  • June 2025

30-Day Supply

$34.97 Save 25%

90-Day Supply

$86.97 Save 37%
  • + Free Shipping**
  • Description

As you get older, your body becomes less efficient at absorbing important vitamins and minerals. So, even when you eat a healthy diet rich in fresh organic vegetables, you may still come up short on some important nutrients. One such nutrient is magnesium.

Experts believe that as much as 80% of Americans don’t get enough of magnesium. Yet, this mineral is essential for vibrant health, playing a key role in the body’s normal detoxification processes. Your bones need it, your muscles need it, your nerves need it and your brain needs it.*

Delivering 2,000 mg of patented Magtein® Magnesium L-Threonate, Magnesium L-Threonate is the preferred form compared to other types of magnesium for several reasons:

  • It has superior absorption compared to other forms of magnesium.
  • It has the ability to cross your blood-brain barrier and penetrate cell membranes.*
  • It can reduce gastrointestinal (GI) discomfort. Unlike other forms of magnesium that can cause GI discomfort and loose stools, magnesium L-threonate does not act as a laxative.*

Magnesium L-Threonate offers many benefits to your mind and body, including support for your bone and joint health, nerve health, clear thinking and healthy sleep. Plus, our formula is made without genetically modified organisms (GMOs).

Discover more about Magnesium L-Threonate

  • GMO Free
    • We guarantee all of our products to be free of genetically engineered ingredients.
  • Gluten Free
    • We guarantee this product to be free of gluten protein.
  • Soy Free
    • We avoid soy whenever possible because it is almost always genetically modified and can affect the hormonal system.
Customer Reviews
  • Customer Reviews


  • Jennie M. Verified Buyer
  • 09/27/2021
  • Was This Review helpful? 0    0


  • Linda R. Verified Buyer
  • 07/22/2021
  • Excellent product.

    Highly recommended. Dr Mercola products are truly the best

  • Was This Review helpful? 2    0


  • P. M. Verified Buyer
  • 06/10/2021
  • Great Product!

    This magnesium worked so well for me I bought a bottle for my Mom to try. She liked it so much she recommended it to a friend!

  • Was This Review helpful? 0    0


  • stephanie p. Verified Buyer
  • 03/24/2021
  • Dr Mercola magnesium

    I have gone thru one bottle already. I can only say, it is pretty amazing, not to wake to excruciating legs cramps. I have taken other types of Magnesium that did not help me. Couple of times I could not walk, had to crawl to my bathroom in the night, to retrieve pain cream it was frightening. Now I use only Dr Mercolas products. Period.

  • Was This Review helpful? 10    0


  • Ginger P. Verified Buyer
  • 03/05/2021
  • Works great

    This magnesium works very well for me. Tremendous help with sleep

  • Was This Review helpful? 8    0


  • Elaine S. Verified Buyer
  • 01/04/2021
  • Great Product

    My sleeping pill! and no stomach upset. Best Magnesium available anywhere. I've used it for years with ZERO (none) side effects. Synthetic pharmaceuticals can't claim that. Thank you, Dr. Mercola.

  • Was This Review helpful? 11    0


  • Gladys P. Verified Buyer
  • 12/04/2020
  • Magnecio

    Es un exelente producto lo amo!

  • Was This Review helpful? 2    1


  • Le H. Verified Buyer
  • 09/12/2020
  • Excellent

    I've been taking magnesium threonate for for some time, mostly just before bed to help with my sleep. I like that it doesn't have all the fillers that other supplements in the market has.

  • Was This Review helpful? 18    0


  • Laura J. Verified Buyer
  • 01/29/2020
  • Humongous capsules

    I recently started taking this supplement, but it's been difficult for me because the capsules are huge, and most of the time, they stuck in my throat for hours... 😫

  • Was This Review helpful? 24    32


  • Kristin P. Verified Buyer
  • 11/06/2019
  • Simply The Best

    I have used Mercola magnesium threonate for years. I have tried other brands but I always come back to my Mercola three a day. There are no unnecessary ingredients. This form of magnesium does not upset my colon. It is rather subjective but my thinking is clearer when I take Mag Threonate. Lastly, I do trust to produce a high quality product and I have never been disappointed.

  • Was This Review helpful? 45    1


  • M W. Verified Buyer
  • 10/23/2019
  • Excellent

    Nice form of mag that doesn’t cause any discomfort. We take 2 before bed and sleep so well. Great work dr mercola!!

  • Was This Review helpful? 35    0


  • Susan J H. Verified Buyer
  • 10/08/2019
  • Thankful for Magnesium

    I used to suffer from cramps in my legs, not just the calves but in even odd places in my legs. Plus my feet were affected and any cramp ruins your sleep. When I take Dr Mercola's Magnesium regularly I do not have a problem with cramps. I take two pills in the morning and two in the evening. Thank you for sound information about Magnesium and providing a supperior product.

  • Was This Review helpful? 37    0


  • Debra R. Verified Buyer
  • 09/26/2019
  • Magnesium L-Threonate

    I have been using this product for quite some time now and just discovered that it was doing me harm. I would have returned it but I don't see that option. the top of my head, very often, feels hot and achy. I have been having a lot of nose bleeds some of them were quite scary. Only by chance did I discover that this magnesium was the source when I got off vitamins for a while and then the nose bleeds stopped. I took some magnesium, 3 capsules as per the instructions, and that day had a nose bleed again and also the next 2 days. I liked that this magnesium did not cause any digestion problems as other magnesium products do, but it is just not worth the worry.

  • Was This Review helpful? 39    52
    • Customer Support

      We are sorry to hear that this product caused an adverse reaction for you. We do see that the product has been refunded as of 9/26 after a call into our Customer Care department.