Magnesium Oxide is a mineral commonly found in over-the-counter dietary supplements or constipation and indigestion remedies. Magnesium Oxide is often packaged as “MgO” or “magnesia.” Magnesium Oxide costs around $22.78, but a SingleCare Magnesium Oxide coupon brings this cost down to $12.04. SingleCare discounts are eligible on over-the-counter products, like Magnesium Oxide, when prescribed by a physician.
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SingleCare’s prescription prices are based on multiple sources. The prices we publish are our best estimate, but we cannot guarantee that the price we display will exactly match the price you receive at the pharmacy. For an exact price, please contact your pharmacy and provide the BIN/GRP/PCN numbers shown on your SingleCare card.
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Prices updated: 12/18/2025
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Magnesium Oxide is a mineral commonly found in over-the-counter dietary supplements or constipation and indigestion remedies. Magnesium Oxide is often packaged as “MgO” or “magnesia.” Magnesium Oxide costs around $22.78, but a SingleCare Magnesium Oxide coupon brings this cost down to $12.04. SingleCare discounts are eligible on over-the-counter products, like Magnesium Oxide, when prescribed by a physician.
Our price history metrics are calculated from aggregate prescription data that we receive from all participating pharmacies. This chart updates daily to show new price fluctuations. If a data point is missing from the chart, it is because we do not have enough data to produce a reliable figure.
| Pharmacy | Magox 400 Retail Price | Magnesium Oxide Retail Price | Magnesium Oxide SingleCare Price |
|---|---|---|---|
| Walmart | - | $11.40 | $9.00 |
| Walgreens | $22.50 | $15.57 | $11.44 |
| Kroger Pharmacy | - | $18.37 | $17.81 |
| Albertsons Pharmacy | - | $11.70 | $11.70 |
These prices are based on the last month of SingleCare prescription fill data by major pharmacy. This table updates daily to show the most accurate typical prices by pharmacies. If a data point is missing from the table, it is because we do not have enough data to produce a reliable figure.
Magnesium Oxide is a mineral commonly found in over-the-counter dietary supplements or constipation and indigestion remedies. Magnesium Oxide is often packaged as “MgO” or “magnesia.” Magnesium Oxide costs around $22.78, but a SingleCare Magnesium Oxide coupon brings this cost down to $12.04. SingleCare discounts are eligible on over-the-counter products, like Magnesium Oxide, when prescribed by a physician.
Magnesium Oxide is an over-the-counter dietary supplement. With or without insurance, customers can expect to pay $22.78 for Magnesium Oxide. With a SingleCare discount card and a prescription for Magnesium Oxide, you pay only $12.04.
Magnesium Oxide is not covered by insurance. Currently, however, you will pay only $12.04 for Magnesium Oxide with a SingleCare savings card and a prescription for Magnesium Oxide. SingleCare is welcomed at major pharmacies throughout the nation, including CVS, Longs Drugs, Fry's, and Walgreens.
Medicare prescription drug plans do not typically cover Magnesium Oxide. An easy way to reduce the cost of Magnesium Oxide is by using a SingleCare discount card with your prescription for Magnesium Oxide. A SingleCare Magnesium Oxide coupon reduces the price of Magnesium Oxide to $12.04.
Generic versions of Magnesium Oxide as a supplement are widely available under brand names such as Piping Rock, Nature Made, and WonderLabs, and many others. The most popular brand for Magnesium Oxide remedies is Phillips Milk of Magnesia from Bayer. Generic Magnesium Oxide remedies are available under brands such as Equate, CVS, and Walgreens, but are often marketed as “MgO” or “magnesia.”
Magnesium Oxide (also: MgO or magnesia) is a mineral that is used in dietary supplements or as a treatment for constipation or indigestion.
Magnesium is a critical element for the body and is used in several vital processes. It helps produce energy, activates muscles, sends electrical signals through nerves, maintains heartbeat, regulates glucose level, and mineralizes bone.
In dietary supplements, Magnesium Oxide is intended to help maintain normal levels of magnesium in the body. A balanced diet will provide sufficient magnesium, but a deficiency may result from poor nutrition, a problem with the kidneys, or use of certain medications, such as diuretics.
Several forms of magnesium are available as supplements: Magnesium Oxide, magnesium citrate, magnesium glycinate, and magnesium malate. Of the four, Magnesium Oxide is the most poorly absorbed by the body.
Magnesium Oxide is also an osmotic laxative and is commonly sold as “magnesia” for that purpose. Magnesium Oxide draws water into the intestines from the intestinal tissues to soften stools and make them easier to pass.
Magnesia also relieves indigestion and excess stomach acid. Magnesium Oxide neutralizes the acid in the stomach that causes indigestion.
The most common side effects of Magnesium Oxide are diarrhea, nausea, vomiting, slow heartbeats, or rectal bleeding. Allergic reactions are rare. However, Magnesium Oxide supplements or remedies often have other inactive ingredients, which may cause allergic reactions. These side effects include itching, rash, hives, eye pain, trouble breathing, or headache. If you have any reaction to Magnesium Oxide supplements, stop taking the supplement and consult with your physician.
SingleCare is accepted at most national pharmacies and grocers, including the following:
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SingleCare is a prescription discount service that offers free coupons on thousands of prescription drugs. It can be used whether you have insurance, Medicare, Medicaid, or none of the above, but it cannot be combined with insurance.
SingleCare provides transparent drug pricing, so you can compare discounts at pharmacies near you. Browse singlecare.com to find drug discounts, helpful information about your prescription, and resources to help you make informed health decisions.
Prescription savings vary by prescription and by pharmacy, and may reach up to 80% off cash price. This is a medical discount plan. This is NOT insurance. This program offers you the opportunity to locate providers of various types of medical services who will offer their services to you at discounted rates. The range of discounts for medical or ancillary services provided under the plan will vary depending on the type of provider and service received. You are fully responsible for paying for all health care services but will be entitled to receive a discount from those health care providers in accordance with the specific pre-negotiated discounted fee schedule. This program does not guarantee the quality of the services or procedures offered by the providers. Except for prescription drugs which you will pay directly to the pharmacy at the time of purchase, all other services received through a program provider will be charged to the credit card on file in your member account. The charge will include an administrative fee for use of the program. Towers Administrators LLC is the licensed discount medical plan organization with its administrative office located at 4510 Cox Road, Suite 111, Glen Allen, VA 23060. SingleCare Services, LLC is the marketer of the discount medical plan organization including its website, singlecare.com, with its corporate office located at 99 High Street, Suite 2800, Boston, MA 02110. For additional information, including an up-to-date list of providers, or assistance with any issue related to program membership, please contact member support any time at www.singlecare.com, or by calling toll-free 844-234-3057, 24 hours, 7 days a week (except major holidays). Pharmacy names, logos, brands, and other trademarks are the property of their respective owners.
Blog articles are not medical advice. They are intended for general informational purposes and are not meant to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. If you think you may have a medical emergency, immediately call your physician or dial 911.
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© 2025 SingleCare Administrators. All rights reserved