Aluminium Hydroxide/Magnesium Hydroxide Oral
Antacid guidance for gastritis and peptic-ulcer-associated stomach pain, including dose timing and key interaction precautions.
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Source reviewed
source date listed on the source page
Guide category
Oral drugs
Safety boundary
Educational medicine information, not personal medical advice.
Kenza Health Hub presents this medicine page as structured health education. Check dose, route, interactions, pregnancy or breast-feeding considerations, and local protocol with a qualified clinician or pharmacist. Read our medical editorial policy.
Therapeutic action
Antacid.
Indications
Stomach pain associated with gastritis and peptic ulcer.
Forms and strengths
- 400 mg aluminium hydroxide/400 mg magnesium hydroxide chewable tablet.
Dose
- Child over 5 years: rarely indicated. When necessary: half a tablet 3 times daily.
- Adult: 1 to 2 tablets 3 times daily 20 minutes to one hour after meals, or 1 tablet during painful attacks.
Duration
According to clinical response.
Contra-indications, adverse effects, precautions
- Decreases intestinal absorption of many drugs.
- Do not administer simultaneously with atazanavir, chloroquine, digoxin, doxycycline, iron salts, gabapentin, itraconazole, or levothyroxine; take at least 2 hours apart.
- For ciprofloxacin, take ciprofloxacin 2 hours before or 4 hours after antacids.
- For dolutegravir, take dolutegravir 2 hours before or 6 hours after antacids.
- For velpatasvir, take 4 hours apart.
- Pregnancy: no contra-indication.
- Breast-feeding: no contra-indication.
Source
MSF Essential drugs practical guidelines (January 2026)
This page combines source-derived medicine reference sections with Kenza editorial context, while leaving out the Storage and Remarks sections from the source batch.
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