Magnesium Oxide 300 mg®

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Serving Size: 1 Capsule(s) · 1 per day

Not Present

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  Mag Complete

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  Douglas Laboratories Magnesium Oxide 250 Capsules

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  Mag Complete 300

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  Mag Complete 300 Nutritional Frontiers 120 Capsules

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  NOW Foods Magnesium Oxide 8 oz.

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Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• GNC

  4.0 (27)

  Vitamin & supplements store

  1775 E Palm Canyon Dr #215, Palm Springs, CA 92264

  Directions(760) 322-1040

• Nutra Relief Inc.

  5.0 (38)

  Vitamin & supplements store

  74801 Hovley Ln E, Palm Desert, CA 92260

  Directions(888) 880-0506

• Nutricion Natural/Natural Supplements

  5.0 (11)

  Herb shop

  69038 E Palm Canyon Dr, Cathedral City, CA 92234

  Directions(760) 770-7133

• The Vitamin Shoppe

  4.5 (95)

  Vitamin & supplements store

  78-692 CA-111, La Quinta, CA 92253

  Directions(760) 564-5987

• Spartan Nutrition

  4.7 (23)

  Sports nutrition store

  77880 Country Club Dr ste 5-3, Palm Desert, CA 92211

  Directions(760) 360-8818

• PS Vitamin Infusions

  5.0 (158)

  Vitamin & supplements store

  242 N Palm Canyon Dr, Palm Springs, CA 92262

  Directions(760) 285-8763

• Lifestyles Nutrition Center

  4.7 (16)

  Wellness center

  74943 CA-111, Indian Wells, CA 92210

  Directions(760) 568-6522

• NUTRISHOP

  4.8 (58)

  Vitamin & supplements store

  Jackson St suite 106, Indio, CA 92203

  Directions(760) 625-0557

• A randomized controlled study of effects of dietary magnesium oxide supplementation on bone mineral content in healthy girls

  TO Carpenter, MC DeLucia, JH Zhang… - The Journal of …, 2006 - academic.oup.com

  … Approximately one half of total body Mg is in bone, adsorbed to the … Mg was supplemented twice daily in a capsule containing powdered magnesium oxide (300 mg of elemental Mg per …

  2006158 citations

• Relationships between hyperinsulinaemia, magnesium, vitamin D, thrombosis and COVID-19: rationale for clinical management

  ID Cooper, CAP Crofts, JJ DiNicolantonio… - Open …, 2020 - openheart.bmj.com

  … that typically measure total 25OHD-… medical supervision, were prescribed daily supplementation doses for vitamin D3 and Mg 2+ at: 1000–2000 IU vitamin D3, 500 mg magnesium …

  202092 citations

• The effect of magnesium and vitamin E co-supplementation on glycemic control and markers of cardio-metabolic risk in women with polycystic ovary syndrome: a …

  M Jamilian, NK Sabzevar… - Hormone and Metabolic …, 2019 - thieme-connect.com

  … in total cholesterol levels was observed in magnesium plus … intake either 250 mg/day magnesium as magnesium oxide (21st … supplementation of 300 mg/day magnesium as …

  201938 citations

• Effects of magnesium citrate, magnesium oxide and magnesium sulfate supplementation on arterial stiffness in healthy overweight individuals: a study protocol for a …

  JC Schutten, PJ Joris, RP Mensink, RM Danel… - Trials, 2019 - Springer

  … The total daily dose of magnesium in the current study is based on previous meta-analyses that reported greater efficacy at higher dosages. Based on dietary recommendations and …

  201924 citations

• Effects of calcium and magnesium on urinary oxalate excretion after oxalate loads

  M LIEBMAN, G COSTA - The Journal of urology, 2000 - auajournals.org

  … carbonate and magnesium oxide on oxalate absorption. … Twenty-four healthy subjects (10 males, 14 females) … when oxalate was expressed as total milligrams excreted in urine samples, …

  2000200 citations

• The effects of magnesium supplementation on subjective anxiety and stress—a systematic review

  NB Boyle, C Lawton, L Dye - Nutrients, 2017 - mdpi.com

  … This inadequate intake is linked with an array of poor health … intake of 300 mg Mg lactate + vitamin B 6 (20 mg) vs. 3 … (1305 mg sorbitol) significantly reduced subjective total and …

  2017496 citations

• Magnesium Forms Explained: Oxide, Citrate, and Glycinate

  The magnesium form on a label affects how much elemental magnesium you get. Here is how the common forms compare.

  VitaSuppTrack Editorial· Jun 24, 2026

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-06-24. DSLD Label ID: 203779. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.