Magnesium Oxide(346)
Best seller Mag-Ox 400 Magnesium Oxide Dietary Mineral Supplement Tablets 120 Count $14.29 Was $15.99 11.9 ¢/count

Mag-Ox 400 Magnesium Oxide Dietary Mineral Supplement Tablets 120 Count
Magnesium Oxide 420mg – Supports Muscle, Nerve & Bone Health – Gentle Digestive Support $6.95 5.8 ¢/count

Magnesium Oxide 420mg – Supports Muscle, Nerve & Bone Health – Gentle Digestive Support
Best seller Nature Made Extra Strength Magnesium Oxide 400 mg Softgels, for Nerve and Bone Health, 60 Ct $11.78 Was $13.98 19.6 ¢/ea

Nature Made Extra Strength Magnesium Oxide 400 mg Softgels, for Nerve and Bone Health, 60 Ct
Best Naturals Magnesium Oxide Mineral Supplement, 500 mg, 180 Tablets $9.99

Best Naturals Magnesium Oxide Mineral Supplement, 500 mg, 180 Tablets
Overall pick Nature Made Magnesium Oxide 250 mg Tablets, Supports Muscle Relaxation, 300 Count From $9.12

Nature Made Magnesium Oxide 250 mg Tablets, Supports Muscle Relaxation, 300 Count
Rollback Nature’s Bounty Magnesium Oxide Supplement, Sleep Aid, Bone, Heart, Muscle Relaxation and Nerve Support, 500 mg, 200 Tablets From $7.47

Nature’s Bounty Magnesium Oxide Supplement, Sleep Aid, Bone, Heart, Muscle Relaxation and Nerve Support, 500 mg, 200 Tablets
Best seller Mag-Ox 400 Magnesium Oxide Dietary Mineral Supplement Tablets 120 Count $14.29 Was $15.99 11.9 ¢/count

Mag-Ox 400 Magnesium Oxide Dietary Mineral Supplement Tablets 120 Count
Magnesium Oxide 420mg Supports Muscle, Nerve & Bone Health Gentle Digestive Support $6.95 5.8 ¢/count

Magnesium Oxide 420mg Supports Muscle, Nerve & Bone Health Gentle Digestive Support
Rollback Spring Valley Magnesium Dietary Supplement Tablets for Bone and Muscle Health, 400 mg, 250 Count From $9.78

Spring Valley Magnesium Dietary Supplement Tablets for Bone and Muscle Health, 400 mg, 250 Count
Best seller Nature Made Extra Strength Magnesium Oxide 400 mg Softgels, for Nerve and Bone Health, 60 Ct Was $13.98

Nature Made Extra Strength Magnesium Oxide 400 mg Softgels, for Nerve and Bone Health, 60 Ct
Rollback Life Extension Magnesium Caps, 500 mg, magnesium oxide, magnesium citrate, magnesium succinate, heart health, healthy bones, metabolism support, 100 vegetarian capsules $8.97 Was $11.97 9.0 ¢/count

Life Extension Magnesium Caps, 500 mg, magnesium oxide, magnesium citrate, magnesium succinate, heart health, healthy bones, metabolism support, 100 vegetarian capsules
Force Factor Ultimate Magnesium, 330mg Magnesium Glycinate & Citrate to Promote Calm & Relaxation, Vegan & Gluten Free, Mixed Berry, 60 Soft Chews $14.98 25.0 ¢/count

Force Factor Ultimate Magnesium, 330mg Magnesium Glycinate & Citrate to Promote Calm & Relaxation, Vegan & Gluten Free, Mixed Berry, 60 Soft Chews
Spring Valley Magnesium Bone & Muscle Health Dietary Supplement Tablets, 250 mg, 100 Count From $3.74

Spring Valley Magnesium Bone & Muscle Health Dietary Supplement Tablets, 250 mg, 100 Count
Geri-Care Magnesium Oxide Supplement for Immune Support, Muscle Recovery - 400 mg, 1 Bottle, 120 per Bottle $7.91 6.6 ¢/count

Geri-Care Magnesium Oxide Supplement for Immune Support, Muscle Recovery - 400 mg, 1 Bottle, 120 per Bottle
Nature Made Extra Strength Magnesium Oxide 400 mg, Dietary Supplement for Muscle, Nerve, Bone and Heart Support, 60 Softgels, 60 Day Supply $15.49 Was $17.41 52.1 ¢/ea

Nature Made Extra Strength Magnesium Oxide 400 mg, Dietary Supplement for Muscle, Nerve, Bone and Heart Support, 60 Softgels, 60 Day Supply
Best Naturals Magnesium Oxide Mineral Supplement, 500 mg, 180 Tablets From $9.99

Best Naturals Magnesium Oxide Mineral Supplement, 500 mg, 180 Tablets
Nutricost Magnesium Oxide Supplement 375mg, 240 Capsules - 210mg of Magnesium $10.99

Nutricost Magnesium Oxide Supplement 375mg, 240 Capsules - 210mg of Magnesium
Magnesium 400mg [High Potency] Supplement Magnesium Oxide for Immune Support, Muscle Recovery, Leg Cramps and Relaxation 120 Tablets $10.00
![Magnesium 400mg [High Potency] Supplement Magnesium Oxide for Immune Support, Muscle Recovery, Leg Cramps and Relaxation 120 Tablets](https://i5.walmartimages.com/seo/Magnesium-400mg-High-Potency-Supplement-Magnesium-Oxide-for-Immune-Support-Muscle-Recovery-Leg-Cramps-and-Relaxation-120-Tablets_0a7b035a-3dbd-46c6-9fd1-158ea1d108e0.00f90cf9b26f374993bfb716c370c36b.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Magnesium 400mg [High Potency] Supplement Magnesium Oxide for Immune Support, Muscle Recovery, Leg Cramps and Relaxation 120 Tablets
Best seller Equate Magnesium Laxative Dietary Supplement Caplets for Occasional Constipation, 500 mg, 55 Count, Compare to Phillips'® Laxative Caplets From $4.94

Equate Magnesium Laxative Dietary Supplement Caplets for Occasional Constipation, 500 mg, 55 Count, Compare to Phillips'® Laxative Caplets
Vitamatic Extra Stregth Magnesium Oxide 400 mg 120 Vegetarian Tablets - Supports Muscle, Nerve, and Heart Health* - Made in The USA - Non-GMO & Gluten Free From $9.99

Vitamatic Extra Stregth Magnesium Oxide 400 mg 120 Vegetarian Tablets - Supports Muscle, Nerve, and Heart Health* - Made in The USA - Non-GMO & Gluten Free
NBPure MagO7 Colon Cleanse & Detox with Ozonated Magnesium Oxides for Constipation & Bloating Relief, 60 Capsules $22.94 38.2 ¢/count

NBPure MagO7 Colon Cleanse & Detox with Ozonated Magnesium Oxides for Constipation & Bloating Relief, 60 Capsules
Rollback Spring Valley Magnesium Dietary Supplement Tablets for Bone and Muscle Health, 400 mg, 250 Count $9.78 Was $10.88 3.9 ¢/count

Spring Valley Magnesium Dietary Supplement Tablets for Bone and Muscle Health, 400 mg, 250 Count
Rollback Life Extension Magnesium Caps, 500 mg, magnesium oxide, magnesium citrate, magnesium succinate, heart health, healthy bones, metabolism support, 100 vegetarian capsules $8.97 Was $11.97 9.0 ¢/count

Life Extension Magnesium Caps, 500 mg, magnesium oxide, magnesium citrate, magnesium succinate, heart health, healthy bones, metabolism support, 100 vegetarian capsules
NBPure MagO7 Colon Cleanse & Detox with Ozonated Magnesium Oxides for Constipation & Bloating Relief, 60 Capsules $22.94 38.2 ¢/count

NBPure MagO7 Colon Cleanse & Detox with Ozonated Magnesium Oxides for Constipation & Bloating Relief, 60 Capsules
Puregen Labs Magnesium Oxide 400mg [High Potency] 120 Tablets 2PK $15.99
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Puregen Labs Magnesium Oxide 400mg [High Potency] 120 Tablets 2PK
Reliable 1 Laboratories Magnesium Oxide Tablets, 400 mg, 120 Count $7.96 6.6 ¢/count

Reliable 1 Laboratories Magnesium Oxide Tablets, 400 mg, 120 Count
Nature's Bounty Magnesium Tablets, 500 Mg, 100 Ct $6.92 6.9 ¢/count

Nature's Bounty Magnesium Tablets, 500 Mg, 100 Ct
NOW Supplements, Magnesium Oxide, Enzyme Function*, Nervous System Support*, 8-Ounce From $13.79

NOW Supplements, Magnesium Oxide, Enzyme Function*, Nervous System Support*, 8-Ounce
Nature Made Extra Strength Magnesium Oxide 400 mg, Dietary Supplement for Muscle Support, 110 Count From $20.00

Nature Made Extra Strength Magnesium Oxide 400 mg, Dietary Supplement for Muscle Support, 110 Count
Pure Naturals Magnesium Oxide 500mg Per Serving 90 Capsules Supplement | Non-GMO | Gluten Free | $9.99 $1.67/oz

Pure Naturals Magnesium Oxide 500mg Per Serving 90 Capsules Supplement | Non-GMO | Gluten Free |
Vitamatic Extra Stregth Magnesium Oxide 400 mg 120 Vegetarian Tablets - Supports Muscle, Nerve, and Heart Health* - Made in The USA - Non-GMO & Gluten Free $9.99

Vitamatic Extra Stregth Magnesium Oxide 400 mg 120 Vegetarian Tablets - Supports Muscle, Nerve, and Heart Health* - Made in The USA - Non-GMO & Gluten Free
Nutricost Magnesium Oxide Supplement 750mg, 240 Capsules $14.95

Nutricost Magnesium Oxide Supplement 750mg, 240 Capsules
Nature Made Magnesium Oxide Tablets, 250 mg, 100 Count $6.31 6.3 ¢/count

Nature Made Magnesium Oxide Tablets, 250 mg, 100 Count
Nutricost Magnesium Oxide Supplement 750mg, 240 Capsules $14.95

Nutricost Magnesium Oxide Supplement 750mg, 240 Capsules
HealthFare Magnesium Oxide 500mg | 240 Vegan Capsules | Extra Strength Essential Mineral Supplement | High Absorption Formula | Non-GMO, Gluten-Free | Made in USA $12.57 Was $13.99

HealthFare Magnesium Oxide 500mg | 240 Vegan Capsules | Extra Strength Essential Mineral Supplement | High Absorption Formula | Non-GMO, Gluten-Free | Made in USA
Amazing Formulas Magnesium Oxide 500 mg Per Serving 90 Capsules Supplement | Non-GMO | Gluten Free $9.99 $3.33/oz

Amazing Formulas Magnesium Oxide 500 mg Per Serving 90 Capsules Supplement | Non-GMO | Gluten Free
Nature Made Extra Strength Magnesium Oxide 400 mg Softgels, 150 Count Was $30.99

Nature Made Extra Strength Magnesium Oxide 400 mg Softgels, 150 Count
Puregen Labs Magnesium Oxide 400mg [High Potency] (120 Tablets) $10.99
![Puregen Labs Magnesium Oxide 400mg [High Potency] (120 Tablets)](https://i5.walmartimages.com/seo/Puregen-Labs-Magnesium-Oxide-400mg-High-Potency-120-Tablets_58c2bf38-a7d9-4f3e-9525-6de49cfb1200.1911c96c824fcc12957da190b98c97c6.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
Puregen Labs Magnesium Oxide 400mg [High Potency] (120 Tablets)
Nature Made Magnesium Oxide 250 mg, Dietary Supplement for Muscle, Heart, Bone and Nerve Health Support, 100 Tablets, 100 Day Supply $8.93

Nature Made Magnesium Oxide 250 mg, Dietary Supplement for Muscle, Heart, Bone and Nerve Health Support, 100 Tablets, 100 Day Supply
Magnesium Oxide 500mg | 90 Capsules | For Men and Women | by Nature's Truth $8.99 Was $10.27 10.0 ¢/count

Magnesium Oxide 500mg | 90 Capsules | For Men and Women | by Nature's Truth
Amazing Formulas Magnesium Oxide 500 mg Per Serving 180 Capsules Supplement | Non-GMO | Gluten Free | Made in USA $17.99

Amazing Formulas Magnesium Oxide 500 mg Per Serving 180 Capsules Supplement | Non-GMO | Gluten Free | Made in USA
Rollback (3 pack) Mag-Ox 400 Magnesium Oxide Dietary Mineral Supplement Tablets 120 Count Was $47.58

(3 pack) Mag-Ox 400 Magnesium Oxide Dietary Mineral Supplement Tablets 120 Count
Puregen Labs Magnesium Oxide 400mg [High Potency] (120 Tablets) 3PK $19.99
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Puregen Labs Magnesium Oxide 400mg [High Potency] (120 Tablets) 3PK
Magnesium Oxide 500mg | 120 Quick Release Capsules | Non-GMO and Gluten Free Supplement | By Carlyle $8.49 Was $9.99

Magnesium Oxide 500mg | 120 Quick Release Capsules | Non-GMO and Gluten Free Supplement | By Carlyle
(2 pack) Magnesium Oxide 420mg Supports Muscle, Nerve & Bone Health Gentle Digestive Support $13.50

(2 pack) Magnesium Oxide 420mg Supports Muscle, Nerve & Bone Health Gentle Digestive Support
Wonder Labs Magnesium Oxide 400, 483mg of Magnesium Oxide Pharmaceutical Grade - 250 Tablets $19.99

Wonder Labs Magnesium Oxide 400, 483mg of Magnesium Oxide Pharmaceutical Grade - 250 Tablets
Nutricost Magnesium Complex 250mg, 240 Capsules - Magnesium Oxide, Citrate, and Glycinate - Gluten Free and Non-GMO $15.95

Nutricost Magnesium Complex 250mg, 240 Capsules - Magnesium Oxide, Citrate, and Glycinate - Gluten Free and Non-GMO
Sports Research Magnesium Oxide 420mg Supports Bone Health Energy Muscle Function - (90 Softgels) $20.10

Sports Research Magnesium Oxide 420mg Supports Bone Health Energy Muscle Function - (90 Softgels)
Vitamatic Magnesium Oxide Powder – 1000 mg Per Serving – 250 Servings – High Absorption Magnesium Supplement – 600 mg Elemental Magnesium – Unflavored From $9.99

Vitamatic Magnesium Oxide Powder – 1000 mg Per Serving – 250 Servings – High Absorption Magnesium Supplement – 600 mg Elemental Magnesium – Unflavored
Magnesium Oxide | 865 mg | 200 Capsules | Non-GMO and Gluten Free Supplement | by Horbach $13.99

Magnesium Oxide | 865 mg | 200 Capsules | Non-GMO and Gluten Free Supplement | by Horbach
Other options to consider(70)
FAQ
What does magnesium oxide typically support?
Magnesium oxide supplements are often chosen for general wellness support. Many product labels highlight:
- Muscle function and relaxation
- Nerve and bone health
- Overall heart wellness
- Relaxation or nighttime routines, depending on the formula
- Gentle digestive support; some formulas focus on cleansing blends
Always review the Supplement Facts and usage directions to confirm what a specific product is designed to support. Results can vary based on your routine and overall diet. If you’re unsure which type or strength fits your goals, consider checking with a healthcare professional before adding it to your regimen.
How do people use magnesium oxide in daily routines?
Most folks follow the product label and build a simple habit. A common approach is:
- Check the serving size and suggested use on your label.
- Take it at the same time each day for consistency.
- Have it with a full glass of water; take with food if your label suggests it.
- Pick a format you’ll stick with (tablet, capsule, softgel, or powder).
- Avoid exceeding the suggested amount unless a professional advises it.
- Store in a cool, dry place and keep out of reach of children.
If you also use other supplements or medications, it’s a good idea to talk with a healthcare professional about timing and fit for your situation.
When should I check with a pro before using magnesium oxide?
It’s wise to get professional guidance if any of the following apply:
- You take prescription medications or have a medical condition.
- You’re pregnant, nursing, or shopping for a child.
- You’re considering higher-strength products or multi-ingredient blends (for example, magnesium with calcium or vitamin D).
- You’ve noticed sensitivity to minerals or digestive discomfort in the past.
A healthcare professional can help review labels, discuss the amount per serving, and suggest a form that aligns with your needs. Bringing the Supplement Facts panel to your appointment can make that conversation quick and clear.
Why do people choose magnesium oxide for heart and muscle support?
Shoppers often pick magnesium oxide for practical reasons rather than any one-size-fits-all benefit:
- Many labels mention support for heart and muscle health.
- It’s commonly offered in higher milligram-per-serving options, which some people prefer.
- It comes in tablets, capsules, softgels, and powders, making it easy to fit your routine.
- Some options are simple single-mineral formulas; others combine magnesium with nutrients like calcium.
Other magnesium forms are available too, and preferences can differ. The right choice depends on your goals and how you feel using it. If you’re unsure which form suits you, consider a quick check-in with a healthcare professional.
How do I pick the right magnesium oxide strength?
Focus on what you’ll actually use consistently. A quick checklist:
- Milligrams and serving size: Look at mg per serving and how many pills (or scoops) make a serving.
- Form: Choose what’s easiest for you to take—tablet, capsule, softgel, or powder.
- Added ingredients: Decide if you want magnesium-only or blends that include nutrients like calcium or vitamin D.
- Dietary preferences: Look for labels such as vegetarian, non-GMO, or gluten-free if they matter to you.
- Count: Pick a bottle size that matches how long you want it to last.
If you’re unsure about the right strength for your situation, a healthcare professional can offer personalized guidance.
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