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Micralax Micro-enema

Active Ingredient:
sodium citrate , sodium alkylsulfoacetate
About Medicine
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Pharmacy
Healthcare Professionals (SmPC) Patient Leaflet (PIL)
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The Patient Information Leaflet (PIL) is the leaflet included in the pack with a medicine.
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Last updated on emc: 30 Sep 2025
{pdf} View or print the patient leaflet as PDF

Below is a text only representation of the Patient Information Leaflet (ePIL).

The text only version may be available in large print, Braille or audio CD. For further information call emc accessibility on {phone} 0800 198 5000. The product code(s) for this leaflet is: PL 36301/0019.

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Micralax Micro-enema

Patient Information Leaflet:

Micralax® Micro-enema, rectal emulsion

Sodium citrate and sodium alkylsulphoacetate

Read all of this leaflet carefully because it contains important information for you.
  • This medicine is available without prescription. However, you still need to use Micralax carefully to get the best results from it.
  • Keep this leaflet. You may need to read it again.
  • Ask your pharmacist if you need more information or advice.
  • You must contact a doctor if your symptoms worsen or do not improve after a few days.
  • In this leaflet Micralax Micro-enema, rectal emulsion will be called Micralax.

In this leaflet:

1. What Micralax is for
2. Before you use Micralax
3. How to use Micralax
4. Possible side effects
5. How to store Micralax
6. Further information

1. What Micralax is for

Micralax belongs to a group of medicines called laxatives.

It contains two active ingredients, sodium citrate and sodium alkylsulphoacetate. These work together in the medicine.

Micralax works by causing water to be drawn into the lower bowels. This makes more water in the stools. This means your stools are softer. It is then much easier to empty your bowels.

Micralax is used to:

  • Treat constipation especially in bedridden patients, the elderly, children, women giving birth or those deliberately not passing stools
  • Empty your bowels before an X-ray or other examination.

Micralax is an enema. An enema is an injection of liquid into your back passage (anus) which makes your bowels easy to empty.

2. Before you take Micralax
Do not use Micralax if:
  • You are allergic to sodium citrate or sodium alkylsulphoacetate
  • You are allergic to any of the other ingredients in Micralax (see section 6)
  • You have an inflammatory bowel disease.

If any of the above applies to you talk to your doctor or pharmacist.

Pregnancy and breast-feeding

If you are pregnant, trying to become pregnant or breast-feeding ask your doctor or pharmacist for advice before using Micralax.

3. How to use Micralax

Always use Micralax exactly as your doctor or pharmacist has told you.

Check with your doctor or pharmacist if you are not sure.

Adults and Children aged 3 years and over:
  • The dose is one tube
  • The tube must always be fully emptied into the rectum in one go
  • Always use a fresh tube of Micralax every time.
  • Micralax usually works within 5 to 15 minutes, so make sure you are near a toilet before using it.

Remember: if after a few days treatment you are still constipated, you must see your doctor.

You should not use laxatives for a long time.

How to use Micralax
  • Lie down on your side with your knees drawn up towards your tummy. If you prefer you can sit on the toilet
  • Pull or twist the cap of the tube
  • You can lubricate the nozzle to make it easier to put in. Squeeze a drop of medicine out onto the nozzle
  • Put the full length of the nozzle into your back passage
  • Gently squeeze the tube until it is empty
  • Keep squeezing the tube as you pull the nozzle out. This is to stop the medicine being drawn back into the tube
  • Wait for the laxative to work. This takes 5-15 minutes.

If you use more Micralax than you should

If you accidentally use too much Micralax, contact the nearest hospital casualty department or your doctor as soon as possible.

If you have any further questions about the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines Micralax can cause side effects, although not everybody gets them.

Most people find that using this medicine causes no side effects, provided it is used correctly.

If you use Micralax too much it may cause diarrhoea or loss of fluid.

Reporting of side effects

If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. You can also report side effects directly via Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.

5. How to store Micralax

Keep out of the sight and reach of children.

Do not use Micralax after the expiry date on the pack. The expiry date refers to the last day of that month.

Store below 25°C.

Medicines should not be disposed of via wastewater or household waste.

Return any medicine you no longer need to your pharmacist.

6. Further information
What Micralax contains

The active substances are 450 mg sodium citrate and 45 mg sodium alkylsulphoacetate.

The other ingredients are sorbitol solution, glycerol, sorbic acid and purified water.

What Micralax looks like

Micralax is a colourless liquid that comes in disposable plastic 5ml tube with 5 - 6 cm long flexible nozzle.

Micralax comes in cartons containing 12 tubes.

Marketing Authorisation Holder
RPH Pharmaceuticals AB
Box 603
101 32 Stockholm
Sweden

Manufacturer
Meribel Pharma Karlskoga AB
Björkbornsvägen 5
691 33 Karlskoga
Sweden

This leaflet was last updated September 2025.

If this leaflet is difficult to see or read or you would like it in a different format, please contact:

RPH Pharmaceuticals AB
Box 603
101 32 Stockholm
Sweden

48 005 44 28

RPH Pharmaceuticals AB
Company image
Address
Box 603, 101 32 Stockholm, Sweden
WWW
www.recipharm.com
Telephone
+44 (0)845 023 0467
Medical Information Direct Line
+44 207 862 1716
Medical Information e-mail
[email protected]
Customer Care direct line
+44(0)845 023 0467
Stock Availability
+44(0)845 023 0467
E-mail
[email protected]