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Milk Of Magnesia

Generic: Magnesium Hydroxide

OTC
✓ FDA-verified
View full FDA label ↗
Milk of Magnesia is a medication that helps relieve occasional constipation, usually prompting a bowel movement within half an hour to six hours. It works by drawing water into the intestines, which helps soften the stool and makes it easier to pass. You can take it as a liquid, preferably at bedtime, with a full glass of water, starting with a dose of 30 to 60 milliliters for adults and children over 12, and 15 to 30 milliliters for children aged 6 to 11. It's important to ask a doctor before using it if you have kidney disease or are on a magnesium-restricted diet. Additionally, if you are taking any prescription medications, be sure to check with your doctor or pharmacist, as it may interact with certain drugs.

Uses

  • occasional constipation. irregularity.

Dosage

Adults and children 12 years and over: 30 mL to 60 mL.
Children 6 to 11 years: 15 mL to 30 mL.
Children under 6 years: ask a doctor.
Take the dose preferably at bedtime.
Drink a full glass (8 oz) of liquid with each dose.
Always follow your doctor's specific instructions for your dose.

Side effects

Common

Common side effects may include stomach painnauseaor vomiting

Serious

Serious side effects include rectal bleeding or no bowel movement after use
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Warnings

⚠ Important warnings

  • Ask a doctor before use if you have kidney disease.
  • Ask a doctor before use if you have a magnesium-restricted diet.
  • Ask a doctor before use if you have stomach pain, nausea, or vomiting.
  • Stop use and ask a doctor if you have rectal bleeding.
  • Stop use if no bowel movement occurs after using this product.
  • If pregnant or breastfeeding, ask a health professional before use.

Ask about this product

Answers pulled from the FDA label only.

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Medical Disclaimer: This content is provided for informational and educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before taking any medication.
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).