Medication guide
Magnesium Hydroxide
- Generic name
- Magnesium Hydroxide
- Common brand names
- Phillips' Milk of Magnesia
- Medication class
- Antacid and osmotic/push bowel laxative
Overview
Its medication class is Antacid and osmotic/push bowel laxative. Common uses include Temporary constipation/antacid support. Product forms and labels can differ, so follow the specific package instructions and ask a pharmacist or qualified healthcare professional about individual questions.
How to Take it
- Route
- Oral fiber/polydextrose-type laxative.
- Time of day
- Best taken in morning (and/or bedtime) with a hydration routine.
- With food/water
- Always with full glass (240 mL) water to prevent obstruction.
- Preparation
- Mix powder fully before drinking; start with partial dose and titrate.
- Safe dose
- Use minimal effective amount to maintain soft stools.
- Max dose
- Do not exceed label daily count; increase gradually.
- Frequency
- Once to twice daily.
- Other recommendations
- Combine with activity and diet; do not use indefinitely.
Common uses
- Temporary constipation/antacid support
Common side effects
- Loose stools
- abdominal cramps
- nausea
- diarrhea
- headache
- and dizziness
Important warnings
- Avoid excessive use in severe renal insufficiency and in young children without dosing guidance. Chronic use can cause electrolyte shifts and dependency pattern. Do not use for prolonged constipation without clinician evaluation for secondary causes.
General interactions information
May alter absorption of certain oral medicines
Sources / references
- Magnesium Hydroxide — MedlinePlus
U.S. National Library of Medicine
These references offer further reading. A source link does not establish that a clinician has reviewed every statement in this guide.
Editorial record
Recorded content review date:
A named medical reviewer and their credentials have not yet been documented for this guide.
Editorial standards and corrections