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Market view

magnesium oxide · Powder

4 marketed package NDCs · 3 active manufacturers

Most dispensed: 400 mg · Tablet · #120 tablets/bottle · 400 mg · Tablet · #10 blister packs/carton / 100 tablet in 1 blister pack · 253 mg · Tablet · #100 tablets/bottle · 400 mg · Tablet · #90 tablets/bottle

The short version

Just 3 companies supply this market — thin enough that a single exit would be felt immediately.

What changed in the last 90 days

Every detected change for magnesium oxide, newest first — price moves, shortages, recalls, and manufacturers entering or leaving. Detected by comparing each day’s federal data against the day before.

  • Magnesium OxideAug 19, 2026
    Price up
    NADAC $0.0346 → $0.03465 per unit (+0.14%)
  • Magnesium OxideAug 19, 2026
    Price up
    NADAC $0.0346 → $0.03465 per unit (+0.14%)
  • Magnesium OxideAug 19, 2026
    Price up
    NADAC $0.0346 → $0.03465 per unit (+0.14%)
  • Magnesium OxideAug 19, 2026
    Price up
    NADAC $0.0346 → $0.03465 per unit (+0.14%)
  • Magnesium OxideAug 19, 2026
    Price up
    NADAC $0.0346 → $0.03465 per unit (+0.14%)
  • Magnesium OxideAug 19, 2026
    Price up
    NADAC $0.03766 → $0.03822 per unit (+1.49%)
  • Magnesium OxideAug 19, 2026
    Price up
    NADAC $0.0346 → $0.03465 per unit (+0.14%)
  • Magnesium OxideJul 22, 2026
    Price down
    NADAC $0.03495 → $0.0346 per unit (-1%)
  • Magnesium OxideJul 22, 2026
    Price down
    NADAC $0.03495 → $0.0346 per unit (-1%)
  • Magnesium OxideJul 22, 2026
    Price down
    NADAC $0.03495 → $0.0346 per unit (-1%)

Same drug class

Other molecules FDA puts in Osmotic Laxative, with whether each is in shortage right now. Same class is not the same drug — substitution is a clinical decision, and this is a supply picture, not a recommendation.

Common questions

Is Magnesium oxide in shortage right now?
No. FDA does not currently list Magnesium oxide in shortage. This page is rebuilt every morning from FDA's shortage database, so a new posting appears here the day it is published.
Who makes Magnesium oxide?
16 companies have marketed Magnesium oxide in the last 30 days, according to the FDA NDC Directory. Every manufacturer and package is listed on this page.
What does Magnesium oxide cost?
The typical pharmacy pays about $0.0347 per unit, based on the most recent CMS NADAC survey of actual acquisition costs. That is what the pharmacy pays for the drug itself — not the cash price, and not what an insurer is billed.

All marketed products

Expand a strength to see its dosage forms, then package sizes, then each manufacturer and NDC. Click an NDC for its full detail page.