At a glance
Movicol and Laxido are two brands of the same type of product: an osmotic laxative containing macrogol 3350 (also known as polyethylene glycol 3350) combined with electrolytes. They work the same way, contain the same active ingredient, and are used for the same purpose — softening stools and relieving constipation.
People ask about the difference between them constantly, and the answer is straightforward: they are essentially the same product from different manufacturers. The differences are in taste, texture, and cost — not in how they work.
This guide covers what macrogol does, how these products compare, and what people with colorectal conditions report about using them.
What is macrogol
Macrogol (called polyethylene glycol or PEG in some countries) is an osmotic laxative. It works by drawing water into the bowel, which softens the stool and makes it easier to pass.
Key things to understand:
- It is not a stimulant laxative — it does not force the bowel to contract
- It works gradually, usually taking one to three days to produce an effect
- It is generally well tolerated and is considered suitable for longer-term use when appropriate
- It works best when taken with adequate water — the mechanism depends on there being enough fluid available to draw into the bowel
Macrogol is one of the most commonly discussed products in colorectal health communities. People with fissures, haemorrhoids, and post-surgical recovery needs frequently use it as part of their stool management routine.
Movicol, Laxido, and MiraLAX: what is the difference
Movicol
Movicol is a brand-name product manufactured by Norgine. It contains macrogol 3350 combined with electrolytes (sodium bicarbonate, sodium chloride, and potassium chloride). It comes as a powder that is dissolved in water before drinking.
It is widely prescribed and available over the counter in the UK and many other countries. People commonly describe the taste as slightly salty or citrusy, depending on the variant.
Laxido
Laxido is a generic alternative to Movicol, manufactured by various companies. It contains the same active ingredients in the same proportions: macrogol 3350 plus the same electrolytes.
Laxido is typically cheaper than Movicol and is often what pharmacies dispense when a prescription is written generically for “macrogol compound.” Some people notice a slight difference in taste or how easily it dissolves, but the active ingredients and their quantities are the same.
MiraLAX
MiraLAX is the most common brand in the United States. It contains polyethylene glycol 3350 — the same core ingredient — but without the added electrolytes that Movicol and Laxido include.
For most everyday constipation management, this difference is not significant. The electrolytes in Movicol and Laxido are included primarily to maintain electrolyte balance during higher-dose use (such as bowel preparation before procedures). For standard daily dosing, the products work very similarly.
MiraLAX is available over the counter in the US and is the product most commonly discussed in American colorectal health communities.
Other macrogol products
There are several other brands and generic versions of macrogol available depending on your country:
- CosmoCol, Molaxole, and Macrogol Compound are other UK generics
- In Australia, similar products are available under various pharmacy brands
Your pharmacist can advise on which products are available and interchangeable in your area.
How macrogol differs from other laxatives
Understanding where macrogol sits in the broader landscape helps explain why it is so commonly recommended for people with colorectal conditions.
Compared to stimulant laxatives (senna, bisacodyl): Macrogol does not stimulate bowel contractions. This makes it gentler and less likely to cause cramping — an important consideration for people with fissures, haemorrhoids, or recent surgery where cramping can worsen pain.
Compared to stool softeners (docusate): Macrogol is generally considered more effective at softening stools. Many people describe switching from docusate to macrogol because the stool softener alone was not producing adequately soft results.
Compared to lactulose: Both are osmotic laxatives, but macrogol is often reported as better tolerated. Lactulose is fermented by gut bacteria, which can cause bloating and gas. Macrogol is not fermented in the same way and tends to produce fewer of these side effects.
Compared to fibre supplements (psyllium, wheat dextrin): These work through different mechanisms — fibre adds bulk, macrogol draws in water. Many people use both together as part of a comprehensive stool management routine.
For a fuller comparison of these categories, see our stool softener vs laxative guide.
What people with colorectal conditions report
Macrogol products are among the most commonly discussed items in colorectal health communities. Here is what people typically describe.
Why people start using it
- Prescribed by their GP or surgeon, often alongside a fissure or haemorrhoid diagnosis
- Recommended as part of post-surgical recovery to prevent straining
- Switched to macrogol after finding stool softeners alone insufficient
- Started it after reading community recommendations from people with similar conditions
What people describe about using it
The positive:
- Consistently softer stools — the most commonly reported benefit
- Reduced straining, which is critical for people with fissures or recent surgery
- Fewer episodes of hard, painful bowel movements
- Relatively predictable effect once the right dose is established
- Well tolerated with few side effects for most people
The challenges:
- Finding the right dose can take trial and error — too little and stools stay hard, too much and they become too loose
- The taste — some people dislike the slightly salty flavour, particularly with the electrolyte-containing versions
- Remembering to take it consistently — the effect depends on regular use rather than occasional dosing
- Explaining it to others — some people feel self-conscious about taking a daily laxative, though this is a very common and unremarkable part of managing many colorectal conditions
Dose finding
One of the most discussed aspects of macrogol use is finding the right dose. The standard adult dose for Movicol and Laxido is typically one to three sachets per day, but the right amount varies from person to person.
People commonly describe a process of adjustment:
- Starting with one sachet and increasing if stools remain hard after two to three days
- Reducing the dose if stools become too loose or watery
- Settling on a maintenance dose that produces soft but formed stools — usually described as a type 4 on the Bristol Stool Scale
- Adjusting temporarily when diet, hydration, or activity levels change
This kind of dose adjustment is usually considered normal and expected by doctors. If you are unsure about adjusting your dose, check with your pharmacist or doctor.
Practical tips people share
These are the practical observations that come up most frequently in community discussions about macrogol products:
- Mix it in advance. Several people describe mixing the sachet in water and refrigerating it, which improves the taste
- Use cold water. The taste is generally considered less noticeable in cold water
- Add it to juice. Some people mix it into a small glass of orange or apple juice rather than plain water. Check with your pharmacist that this is suitable
- Take it at the same time each day. Consistency helps the bowel establish a pattern
- Drink additional water. Macrogol draws water into the bowel. If you are not drinking enough overall, it has less to work with
- Do not skip doses when travelling. Disruption to the routine is the most commonly cited reason for flare-ups. Some people describe pre-portioning sachets into travel bags
- Track your stools. Noting down the consistency and ease of bowel movements for the first week or two helps with dose adjustment
Common questions about switching
From Movicol to Laxido (or vice versa). The active ingredients are the same. Most people who switch describe no difference in effect. The main reasons for switching are cost (Laxido is usually cheaper) or availability. If you have been prescribed one specifically, check with your pharmacist before switching.
From lactulose to macrogol. This is one of the most commonly described switches. People who make this change frequently report less bloating and gas, and more predictable stool softening. The switch is usually straightforward, but it is worth discussing with your doctor, particularly if you are managing a condition alongside it.
From MiraLAX to Movicol (or vice versa). The core ingredient is the same. The electrolyte difference is rarely significant at standard doses. If you are travelling between countries and need to switch, a pharmacist can confirm the equivalent product.
Adding fibre alongside macrogol. Many people use a fibre supplement (such as psyllium) in combination with macrogol. This is generally considered compatible, but fibre supplements need additional water to work properly. If you are taking both, your water intake needs to be higher than if you were taking either alone.
Long-term use
Many people with colorectal conditions use macrogol products for months or even years. This is a common pattern, particularly for people with chronic fissures, haemorrhoids, or conditions where soft stools are a long-term management strategy.
Macrogol is generally considered well tolerated for long-term use. It is not a stimulant laxative, so the concerns about bowel dependence that apply to products like senna or bisacodyl are less relevant here.
That said, long-term use of any product is worth periodically reviewing with your doctor. The goal is always to understand and address the underlying cause of constipation — whether that is dietary, related to a specific condition, or a side effect of other medication — rather than simply managing the symptom indefinitely.
When to talk to your doctor
Macrogol products are widely available over the counter, but there are situations where a conversation with your doctor is important:
- If you have been using macrogol for more than two weeks without discussing it with a doctor
- If the standard dose is not producing adequately soft stools
- If you are experiencing persistent diarrhoea — the dose may need reducing
- If you are taking other medications — macrogol can sometimes affect absorption, and your doctor or pharmacist can advise on timing
- If you are pregnant or breastfeeding — macrogol is generally considered safe, but it is worth confirming with your doctor
- If you are using macrogol as part of post-surgical recovery — follow your surgeon’s specific guidance on product and dosing
When to seek urgent care
Seek medical attention if you experience:
- Severe abdominal pain or cramping
- No bowel movement for several days despite consistent treatment
- Blood in your stool
- Vomiting, especially alongside constipation
- Any symptoms that are getting worse rather than better