Milk of Magnesia is a widely recognized over-the-counter (OTC) medication used for treating two common digestive ailments: occasional constipation and acid indigestion, like heartburn and an upset stomach [1.3.3, 1.3.5]. Its active ingredient is magnesium hydroxide, which works as a saline laxative by drawing water into the intestines to soften stool and stimulate a bowel movement [1.3.1, 1.9.2]. As an antacid, it works by neutralizing excess stomach acid [1.3.3]. Given its effectiveness, knowing where to find it is key for timely relief.
Where to Find Milk of Magnesia: A Detailed Breakdown
This versatile remedy is stocked in numerous physical and online stores, making it highly accessible.
Local Pharmacies and Drugstores
Your local pharmacy is one of the most reliable places to find Milk of Magnesia. Major chains are almost certain to carry it.
- CVS: Offers both the brand name (Phillips') and its own store brand of Milk of Magnesia [1.2.2].
- Walgreens: Stocks Phillips' Milk of Magnesia as well as its own generic version, often labeled "Milk of Magnesia Original" [1.2.3, 1.2.5].
- Rite Aid: Similar to other major drugstores, Rite Aid typically has brand-name and store-brand options available in the digestive health aisle.
Supermarkets and Large Grocery Stores
Most large supermarkets with a pharmacy or a comprehensive health and wellness section will carry Milk of Magnesia. Look in the aisle with laxatives and antacids.
- Walmart: Carries Phillips' Milk of Magnesia and other generic brands, both in-store and online [1.2.6].
- Target: You can find it in the pharmacy section, alongside other digestive health products.
- Kroger and affiliated stores: These grocery chains usually stock it in their health and personal care sections.
Online Retailers
For convenience, online shopping is an excellent option. Major retailers offer a wide selection and competitive pricing.
- Amazon: Features a vast selection of different brands, sizes, and forms of Milk of Magnesia, including liquid and chewable tablets.
- Walmart.com, CVS.com, and Walgreens.com: The online storefronts for these major retailers offer the same products found in their physical stores, often with options for delivery or in-store pickup [1.2.6, 1.2.2, 1.2.3].
Understanding the Different Forms of Milk of Magnesia
Milk of Magnesia is primarily available in two forms: a liquid suspension and chewable tablets. The choice between them often comes down to personal preference, dosage accuracy, and ease of use [1.3.2, 1.4.1].
| Feature | Liquid Suspension | Chewable Tablets |
|---|---|---|
| Primary Use | Constipation and Antacid | Constipation and Antacid |
| Dosage | Measured with a dosing cup (mL) [1.4.1] | Pre-measured dose per tablet [1.4.2] |
| Onset Time | Typically produces a bowel movement in 30 minutes to 6 hours [1.3.2] | Similar onset time to liquid |
| Flavor | Often available in original (chalky), cherry, or mint flavors [1.5.6] | Typically flavored for palatability |
| Convenience | Less portable, requires a measuring cup [1.4.1] | Highly portable and discreet |
Choosing Between Brand Name (Phillips') and Generic Versions
The most well-known brand is Phillips' Milk of Magnesia [1.4.3]. However, nearly every major drugstore and supermarket chain offers a generic or store-brand version [1.2.5]. Both brand-name and generic versions contain the same active ingredient, magnesium hydroxide, and are equally effective [1.9.3]. The primary differences are typically price and inactive ingredients, with generic versions usually being more affordable [1.5.6].
How to Use Milk of Magnesia Safely and Effectively
Proper usage is crucial for safety and effectiveness. Always follow the directions on the product label or consult a healthcare provider [1.3.5].
Important Safety Information
- Hydration: Drink a full 8-ounce glass of water with each dose to help the medication work and prevent dehydration [1.3.3].
- Duration of Use: Do not use as a laxative for more than one week without consulting a doctor [1.3.1]. For antacid use, do not use for more than 14 consecutive days [1.3.2].
- Contraindications: People with kidney disease, those on a magnesium-restricted diet, or individuals experiencing stomach pain, nausea, or vomiting should consult a doctor before use [1.6.2, 1.6.5].
- Drug Interactions: Take other medications at least two hours before or after taking Milk of Magnesia, as it can affect how other drugs work [1.3.1].
Potential Side Effects
Common side effects can include diarrhea, abdominal cramping, and nausea [1.6.4, 1.6.5]. Severe side effects are rare but can include signs of an allergic reaction, no bowel movement after use, or rectal bleeding. If you experience any of these, stop using the product and seek immediate medical attention [1.3.5, 1.6.6].
Conclusion
Finding Milk of Magnesia is straightforward, as it's a staple in the digestive health aisle of most pharmacies, supermarkets, and online stores [1.2.2, 1.2.3, 1.2.6]. Whether you choose the liquid or chewable form, or opt for a brand name or generic, you are getting an effective product for occasional constipation and heartburn. Always use it as directed and consult a healthcare professional if your symptoms persist or if you have underlying health conditions.
For more detailed information on constipation and its treatments, you can visit the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK).
