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Milk of Magnesia

Dosage form
SUSPENSION
Labeler
Cardinal Health 107, LLC
Label updated
2026-06-05
Retrieved
2026-09-07
Active ingredients
MAGNESIUM HYDROXIDE
View original label and images on DailyMed ↗
Label information

Drug Facts

Active ingredient (in each 5 mL)

Magnesium hydroxide 400 mg

Purpose

Saline laxative

Uses

As an Antacid

  • •heartburn
  • •upset/sour stomach
  • •acid indigestion

As a Laxative (usually within ½ to 6 hours)

  • •occasional constipation (irregularity)
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

Label information

Ask a doctor or pharmacist before use If you aretaking 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

Label information

If pregnant or breast-feeding,ask a health professional before use.

Label information

Keep out of reach of children.In case of overdose, get medical help or contact a Poison Control Center right away.

Directions

As an Antacid

  • •do not exceed the maximum recommended daily dose in a 24 hour period
  • •shake well before use
  • •can be taken with water
  • •mL = milliliter

adults and children 12 years of age and over

5 to 15 mL (1 to 3 teaspoonfuls)

children under 12 years of age

ask a doctor

As a Laxative

  • •do not exceed the maximum recommended daily dose of 60 mL in a 24 hour period
  • •shake well before use
  • •dose may be taken once a day preferably at bedtime, in divided doses, or as directed by a doctor. Drink a full glass (8 oz) of liquid with each dose.
  • •mL = milliliter; TBSP = Tablespoon

adults and children 12 years and older

30 mL (2 TBSP) to 60 mL (4 TBSP)

children 6 – 11 years

15 mL (1 TBSP) to 30 mL (2 TBSP)

children under 6 years

ask a doctor

Other information
  • each teaspoonful (5 mL) contains:magnesium 400 mg
  • •store at room temperature, 20° - 25°C (68° - 77°F). Avoid freezing.
  • •Milk of Magnesia USP (white suspension, spearmint flavor) is supplied in the following oral dosage form:

Overbagged with 5 x 30 mL unit dose cup in each bag, NDC 55154-9403-5

WARNING: This Unit Dose package is not child resistant and is Intended for Institutional Use Only. Keep this and all drugs out of the reach of children.

Inactive ingredients

flavoring, hydroxypropyl methylcellulose, methylparaben, potassium citrate, propylene glycol, propylparaben, purified water, antifoam af emulsion, sodium saccharin, and sorbitol.

Questions or comments?

Call 1-800-845-8210

Label information

MANUFACTURED BY
Pharmaceutical
Associates, Inc.
Greenville, SC 29605

Distributed By:

Cardinal Health

Dublin, OH 43017

L33325170526

F0431300721

Principal Display Panel

NDC 55154-9403-5

MILK OF MAGNESIA USP

5 CUPS

[Image in the official label — see DailyMed source]

DailyMed Set ID: 144c7242-4ff9-404a-86bf-48e2871eb0cd · Version 14
NDC: 55154-9403