Milk of Magnesia - 200ml
£5.49 ex. VAT · includes £1.10 (20.00% VAT)
Product Overview
Phillips Milk of Magnesia liquid contains magnesium hydroxide and is used to relieve: indigestion, excess acid and wind, heartburn, stomach discomfort.
Description
Milk of Magnesia 200ml is an oral antacid and gentle laxative used to help relieve occasional constipation and symptoms of indigestion, heartburn and excess stomach acid.
The active ingredient, magnesium hydroxide, works in two ways:
- As a laxative, it draws water into the bowel, softening stools and helping to stimulate bowel movement
- As an antacid, it neutralises excess stomach acid to relieve discomfort associated with indigestion and heartburn
Milk of Magnesia is commonly recommended in pharmacy practice for short-term relief of constipation or acid-related digestive symptoms. It acts locally in the gut and is suitable for occasional use when dietary or lifestyle measures alone are insufficient.
Pack size: 200ml
Category: Pharmacy Medicine (P)
Suitable for: Adults and children (age restrictions apply – see warnings)
How to Use
Always use this medicine exactly as described on the product label or as advised by a pharmacist or GP.
For constipation (laxative use):
- Adults and children over 12 years:
- Take the dose stated on the label, usually once daily, preferably at bedtime
- Effects usually occur within 6–8 hours
For indigestion or heartburn (antacid use):
- Adults and children over 12 years:
- Take a smaller dose as directed, up to several times daily, when symptoms occur
Important usage advice:
- Shake the bottle well before use
- Measure the dose carefully using a spoon or medicine measure
- Drink plenty of fluids
- Do not exceed the recommended dose
If symptoms persist or worsen, seek advice from a pharmacist or GP.
Ingredients
Active ingredient:
- Magnesium Hydroxide
Other ingredients include:
- Purified Water
- Flavouring agents and suspending agents
Always check the product packaging or patient information leaflet for the full and most up-to-date ingredient list, especially if you have known sensitivities.
Side Effects & Warnings
Do not use Milk of Magnesia:
- If you have severe kidney problems
- If you are allergic to magnesium hydroxide or any of the ingredients
Warnings & precautions:
- For oral use only
- Not recommended for long-term daily use without medical advice
- Use with caution in elderly patients or those with kidney disease
- Leave a gap of at least 2 hours between taking this medicine and other medicines, as absorption may be affected
Possible side effects:
- Diarrhoea
- Abdominal cramps
- Nausea
Stop use and seek medical advice if severe diarrhoea, persistent abdominal pain or dehydration occurs.
Pregnancy and breastfeeding:
- Consult a pharmacist or GP before use
Keep out of the sight and reach of children.
Store below 25°C and use before the expiry date shown on the bottle.

