Magnesium supplements now up to 50% off in the Prime Early Access Sale

woman pouring supplement capsules onto her hand
(Image credit: Getty Images)

Finding good deals on good quality magnesium supplements may feel like a challenging task. But with the Amazon Prime Day event in full swing, now may be the best time to stock up on your dietary supplements, without overstretching your budget.  

It may not always be possible to get most of our essential nutrients from whole foods. Although it is universally hailed as the best approach, we may simply not have the time, or resources, to eat right at all times. The right dietary supplements can help us bridge these gaps in our diet and prevent nutrient deficiencies. Magnesium in particular is crucial to our health, but many struggle with obtaining enough of it. What's more, our levels of this essential mineral drop when we are stressed or anxious.  

Magnesium plays many important roles in our body, especially when it comes to the functioning of our nervous system. This nutrient is known to help promote restful sleep, increase energy and relieve symptoms of restless leg syndrome. You can currently save on BioEmblem's Triple Magnesium Complex, now just $22.79 at Amazon, while Nature Made Magnesium Oxide 250mg are 24% off at Amazon.

We've pulled together the best deals from Amazon's Prime Early Access Sale to see you through the next few months. 

It is worth noting that the tolerable upper limit for magnesium is 350mg from supplements only (this excludes food). It is always worth speaking to your doctor before you take any new supplement, to make sure the amounts are safe for you.

Best deals on magnesium capsules

, Now $7.99 at Amazon

Nature Made Magnesium Oxide 250mg  | Was $10.49, Now $7.99 at Amazon

Save 24% on these magnesium oxide tablets from Nature Made. Designed to support muscle relaxation, one unit will last you 200 days. They're also gluten-free and don't contain any artificial flavors.

, Now $12.44 at Amazon

Now Supplements Magnesium Caps 400mg | Was $18.99, Now $12.44 at Amazon

Save a whopping 34% on these magnesium capsules from reputable supplement company Now Foods. Each capsule contains 400mg magnesium from oxide, citrate and aspartate, making it easily absorbable. One unit will last you 180 days.

, Now $23.99 at Amazon

BioEmblem Triple Magnesium Complex 300mg | Was $42.99, Now $23.99 at Amazon

This combination of magnesium glycinate, malate and citrate is designed to be highly bioavailable, to aid with muscle relaxation, sleep and energy. The capsules are vegan, non-GMO and unflavored.

, Now $17.06 at Amazon

Naturebell Double Strength Magnesium Glycinate  | Was $18.95, Now $17.06 at Amazon

These one-a-day capsules from Naturebell contain magnesium glycinate for superior absorption, and will last 180 days. Each capsule also contains 500mg to support muscle, joint and heart health.

Olympian Labs Magnesium Citrate 400mg | Was $15,

Olympian Labs Magnesium Citrate 400mg | Was $15, Now $10.50 at Amazon

Save $4.5 (30%) on Olympian Labs Magnesium Citrate supplement. Supporting sleep quality, energy, muscle support, memory and cognitive function, this high quality magnesium supplement is highly bioavailable. 

Now $11.03 at Amazon

Source Naturals Ultra-Mag High-Efficiency Magnesium Complex | Was $17.50 Now $11.03 at Amazon

Save 37% on this 120 pack of Ultra-Mag High Efficiency Magnesium Complex. This supplement uses a complex blend of highly bioactive forms of magnesium—citrate, taurinate, malate, glycinate and succinate. 

Best deals on magnesium supplement drinks

, Now $24.51 at Amazon

Natural Vitality Calm Magnesium Citrate Supplement Drink | Was $39.95, Now $24.51 at Amazon

If you have difficulty swallowing capsules, you can save $14.51 (35%)  on this magnesium supplement powder from Natural Vitality. Available in six great flavors, it's vegan, gluten-free and non-GMO. Each unit contains 113 servings too.

Now $14.36 on Amazon

Bluebonnet Liquid Magnesium Citrate 420mg Mixed Berry Immune | Was $16.95 Now $14.36 on Amazon

Save 15% on this Liquid Magnesium Citrate by Bluebonnet this Amazon Prime Day. Delivers 420 mg of elemental magnesium (100% of the daily value) to help support heart, muscle, nerve and bone health. This delicious liquid mixed berry-flavored formula is free of artificially-derived sweeteners, flavors and colors.

Haven't found what you were looking for? Keep an eye out — the Prime Early Access Sale runs from October 11-12, so we'll be regularly updating this guide with the best deals on magnesium supplements throughout the event.

If you're not yet a Prime member, it's also worth signing up for a free trial. The Prime Early Access Sale rewards prime members with a wealth of wonderful discounts across various brands and categories. 

For more, check out our Amazon Prime Day Health Deals for 2022.

Alice Ball

Alice is the health channel editor at Live Science. She also reviews tech and fitness products for our buying guides, from air purifiers to treadmills. She has worked across multiple knowledge and wellness brands at Future, including Fit&Well, Coach, T3, TechRadar and Tom's Guide. Alice holds a bachelor's degree in journalism from City, University of London, where she spent a year studying nutrition, dietetics and public health at Queensland University of Technology in Brisbane. A self-confessed running fanatic, she's completed six marathons and qualified for the Boston marathon.