PRODUCT DETAIL

Composition

The active ingredient is:

• Magnesium hydroxide (Milk of Magnesia)
  → usually around 415 mg per 5 ml (varies slightly by formulation) ([turn0search5])

It is a saline osmotic laxative and antacid.

Uses / Indications

Used for two main purposes:

1. Constipation

• Draws water into the intestines
• Softens stool and increases bowel movement
• Works in about 30 minutes to 6 hours ([turn0search0])

2. Indigestion / Acid relief

• Neutralises excess stomach acid
• Relieves:
• heartburn
• sour stomach
• acid indigestion ([turn0search1])

Direction of Use

(Varies slightly by brand, but typical)

For constipation (adults):

• 30–45 ml at bedtime
• May repeat nightly until bowel movement normalises
• Always drink a full glass of water

For indigestion:

• Smaller doses (5–10 ml as needed)

Children:

• Only under age guidance (usually 3+ years) and lower doses
• Not for very young children unless advised

Do not use continuously for long periods without medical advice ([turn0search7])

Side Effects

Common:

• Diarrhoea (most common)
• Abdominal cramps
• Bloating or gas
• Nausea

Less common but important:

• Dehydration (if overused)
• Electrolyte imbalance (low potassium)
• Weakness or dizziness
• In kidney disease: risk of magnesium buildup (dangerous) ([turn0search3])

Warnings / Precautions

• Do NOT overuse → can cause diarrhoea and dehydration
• Avoid if:
• severe kidney disease
• bowel obstruction
• severe abdominal pain of unknown cause
• Use caution in:
• elderly
• pregnant or breastfeeding (only if advised)
• Long-term daily use is not recommended

Drug Interactions

• May reduce absorption of:
• antibiotics (tetracyclines, quinolones)
• iron supplements
• thyroid medicines
• Diuretics (“water tablets”) → electrolyte imbalance risk
• Other laxatives → excessive bowel effect

Contraindications / Caution

Avoid if:

• Allergy to magnesium hydroxide
• Severe kidney disease
• Intestinal obstruction