What is the brand name for Magnesium Salts?
The brand name for Magnesium Salts is OTC (Magnesium).
PTCE Top 200 · #174
Magnesium Salts
OTC (Magnesium)
Magnesium Salts is the generic name for the brand-name drug OTC (Magnesium). It is a magnesium supplement used to treat Mg deficiency, constipation. On the PTCE Top 200 drug list, Magnesium Salts ranks #174 and is one of the most frequently tested vitamins/minerals/supplements medications — commonly quizzed on its brand–generic pair, drug class, and key side effects.
| Generic name | Magnesium Salts |
|---|---|
| Brand name(s) | OTC (Magnesium) |
| Drug class | Magnesium supplement |
| Class group | Vitamins/Minerals/Supplements |
| Common use | Mg deficiency, constipation |
| DEA schedule | Unscheduled |
| Availability | Over-the-counter (OTC) |
What is Magnesium Salts used for?
Dietary supplement for magnesium replacement (product-specific).
What drug class is Magnesium Salts?
Magnesium Salts is a Magnesium supplement in the Vitamins/Minerals/Supplements group. Knowing the class is the fastest way to predict its uses, side effects, and the brand↔generic pairs the PTCE tests.
Common side effects of Magnesium Salts
- arrow_rightDiarrhea
- arrow_rightAbdominal cramping
- arrow_rightNausea
Major interactions
- arrow_rightTetracycline and fluoroquinolone antibiotics (chelation reduces absorption; separate dosing)
- arrow_rightBisphosphonates (reduced absorption; separate dosing)
- arrow_rightLevothyroxine (reduced absorption; separate dosing)
- arrow_rightCertain diuretics can alter magnesium levels (monitor)
Is Magnesium Salts a controlled substance?
No. Magnesium Salts is not a federally controlled substance (it is unscheduled by the DEA).
How to remember Magnesium Salts (PTCE mnemonic)
MAG-nesium MAintaiNs muscle/nerve function. Citrate/hydroxide → laxative; oxide → constipation; high dose = diarrhea, low BP; BINDS quinolones/tetracyclines/levothyroxine (separate 2hr).
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PTCE exam tip
Magnesium's form determines its job — citrate and hydroxide are laxatives, oxide is a supplement — and magnesium antacids bind fluoroquinolones and tetracyclines (space the doses).
Magnesium Salts FAQ
What is Magnesium Salts used for?
Magnesium Salts is used to treat Mg deficiency, constipation. Dietary supplement for magnesium replacement (product-specific).
What drug class is Magnesium Salts?
Magnesium Salts is a Magnesium supplement (Vitamins/Minerals/Supplements group).
Is Magnesium Salts a controlled substance?
No. Magnesium Salts is not a federally controlled substance (it is unscheduled by the DEA).
Related drugs in the Vitamins/Minerals/Supplements group
Drill Magnesium Salts the way the PTCE asks it
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Last reviewed June 25, 2026. Educational use only — not medical advice. Verify clinical specifics with your pharmacist or a current label source such as DailyMed. RxReflex is not affiliated with or endorsed by the Pharmacy Technician Certification Board (PTCB).