Description
Fast, Local Relief from Constipation
Micralax Micro-Enema Overview
Micralax Micro-Enema 5 ml is a fast-acting rectal laxative used for the short-term relief of constipation. It works locally in the rectum to soften stools and stimulate bowel movement, often producing results within 5–15 minutes.
In the UK, Micralax is an over-the-counter medicine suitable for adults and children (age guidance applies). It is commonly used when oral laxatives are unsuitable or when rapid relief is needed.
Understanding Constipation
What causes constipation?
Constipation occurs when stools become hard, dry, and difficult to pass. This can be caused by dehydration, low fibre intake, changes in routine, reduced mobility, certain medicines, or ignoring the urge to open the bowels.
In some situations, such as after surgery, during illness, or in older adults, rapid relief may be required to avoid discomfort or straining.
Why local treatment can help
Rectal treatments act directly where stool is retained, avoiding the need for systemic absorption and providing faster relief than many oral laxatives.
What Is Micralax Micro-Enema?
Micralax is a single-dose micro-enema containing a combination of sodium citrate, sodium lauryl sulfoacetate, and sorbitol solution. Together, these ingredients work to soften stool and promote bowel emptying.
The small-volume tube is designed for easy, hygienic self-administration.
How Does Micralax Work?
Dual mechanism of action
Micralax works through two complementary actions:
- Osmotic effect – draws water into the stool, softening it
- Stool softening and lubrication – helps break down hardened stool and ease passage
Because it acts locally, it does not stimulate the entire bowel.
Speed of action
Most people experience a bowel movement within 5–15 minutes, making Micralax suitable when quick relief is required.
What Micralax Treats — and What It Does Not
What it helps with
Micralax Micro-Enema is used to relieve:
- occasional constipation
- hard or impacted stool in the rectum
- difficulty passing stool due to dryness
It is also sometimes used before certain medical procedures, on advice.
What it does not treat
Micralax does not:
- treat chronic constipation long-term
- address underlying bowel conditions
- replace dietary and lifestyle measures
Persistent constipation should be medically assessed.
Who Is Micralax Micro-Enema For?
Micralax may be suitable for:
- adults with occasional constipation
- children (check age guidance and advice)
- people needing rapid, predictable relief
- individuals who cannot tolerate oral laxatives
It is intended for short-term use only.
Who Should Avoid Micralax
Micralax may not be suitable if:
- you have severe abdominal pain of unknown cause
- you have bowel obstruction or intestinal blockage
- constipation is persistent or recurrent
- you are allergic to any ingredients
Medical advice should be sought if unsure.
How to Use Micralax Micro-Enema
Application guidance
- Twist off the cap
- Insert the nozzle gently into the rectum
- Squeeze the tube fully
- Withdraw while keeping the tube compressed
A bowel movement usually follows shortly after use.
Practical usage advice
- Use only one enema at a time
- Remain near a toilet after administration
- Do not use regularly without advice
Safety, Warnings and Side Effects
Micralax is generally well tolerated.
Some people may experience:
- mild rectal irritation
- a brief burning sensation
These effects are usually short-lived.
When to Seek Medical Advice
Speak to a GP or pharmacist if:
- constipation persists despite treatment
- symptoms recur frequently
- you experience severe abdominal pain, vomiting, or blood in stools
- constipation is new and unexplained
These may indicate an underlying condition.
Use in Pregnancy and Breastfeeding
Micralax is often used during pregnancy or breastfeeding on advice, as it acts locally and is minimally absorbed. Always seek professional guidance before use.
How Micralax Compares to Other Laxatives
Micralax vs oral laxatives
Oral laxatives act throughout the bowel and may take hours or days. Micralax provides rapid, local relief.
Micralax vs glycerine suppositories
Both act locally, but Micralax is often preferred for its faster onset and ease of administration.
Supporting Healthy Bowel Function
Alongside occasional laxative use, bowel regularity can be supported by adequate hydration, fibre intake, regular movement, and responding promptly to the urge to open the bowels.
Micralax Micro-Enema Summary
Micralax Micro-Enema 5 ml offers fast, predictable relief from constipation by softening stool and acting directly in the rectum. When used occasionally and as directed, it can quickly relieve discomfort without affecting the rest of the digestive system.
Ongoing or recurrent constipation should always be reviewed by a healthcare professional.





