Important: This page is general information, not medical advice. It does not recommend or prescribe any treatment. Always consult your doctor or pharmacist before starting, stopping or changing any medicine.
Quick facts
- How it is given
- oral
- Type
- human otc drug
- Brand names
- MILK OF MAGNESIA
- RxNorm ID
- 253017
We do not publish dosing. How much of this medicine to take, how often, and for how long depends on your age, weight, kidney and liver function, other conditions and other medicines. That is a decision for the person who prescribes or dispenses it. Follow the directions on your own pack and ask your pharmacist if anything is unclear.
What it is used to treat
Uses relieves occasional constipation (irregularity) generally produces bowel movement in 1/2 to 6 hours
Warnings
Warnings Ask a doctor before use if you have kidney disease a magnesium-restricted diet stomach pain, nausea, or vomiting a sudden change in bowel habits that lasts over 14 days Ask a doctor or pharmacist before use if you are presently taking a prescription drug. This product may interact with certain prescription drugs. Stop use and ask a doctor if you have rectal bleeding or no bowel movement after using this product. These could be signs of a serious condition. you need to use a laxative for more than 1 week If pregnant or breast-feeding, ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center (1-800-222-1222) right away.
Storing it safely
Other information each 15 mL contains: magnesium 500 mg, sodium 6 mg store at room temperature tightly closed avoid freezing
Keeping it away from children
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center (1-800-222-1222) right away.
Active ingredient
Active ingredient (in each 15 mL) Magnesium hydroxide 1200 mg
Other ingredients
Inactive ingredients carboxymethylcellulose sodium, citric acid, D & C red no. 28, flavor, glycerin, microcrystalline cellulose, purified water, sodium citrate, sodium hypochlorite, sucrose, xanthan gum
Before you take anything new
Tell your pharmacist or doctor about every medicine you take — including ones bought without a prescription, herbal products and supplements. Interactions are one of the most common avoidable causes of harm from medicines, and a pharmacist can check your full list in a couple of minutes.
This page is built from the openFDA record of the U.S. Food and Drug Administration's approved labelling for this product, effective 8 November 2023. Label text has been shortened and reformatted for readability; safety wording has not been altered in meaning. FDA labelling describes products approved in the United States — brand names, strengths, formulations and approved uses may differ in your country. Always read the leaflet that comes with your own pack. PocketsInfo is not affiliated with, and is not endorsed by, the FDA. Retrieved 2026-07-30.