Can I take a stool softener and a laxative at the same time?

This is a question for a pharmacist or your doctor rather than something to decide from a web page. Some people do end up using more than one product, usually on advice — but combining laxatives can lead to diarrhea, dehydration, and electrolyte problems, and it also makes it hard to tell what is working. Check before combining anything. If you have severe abdominal pain, a swollen abdomen, vomiting, or you are unable to pass gas or stool, do not take more laxatives — get seen urgently.

How long can I safely take a stool softener?

The NHS medicines page for docusate is the right source for how long it is intended to be used, and the packet will say. What people commonly describe is that if they are still reaching for any laxative after a couple of weeks, that is the point to talk to a pharmacist or GP — not because it is dangerous, but because the more useful question by then is what is causing the constipation. New or changed bowel habit, blood, or unexplained weight loss are reasons to get seen rather than to keep managing it yourself.

Are stool softeners safe after colorectal surgery?

Many surgeons recommend stool softeners as part of post-operative care to prevent straining. The specific product and approach depends on the type of surgery you had. Always follow your surgeon's instructions rather than self-selecting products.

What is the difference between Miralax and Colace?

Colace (docusate sodium) is a stool softener — it helps stools retain moisture so they are softer when passed. Miralax (polyethylene glycol) is an osmotic laxative — it draws water into the bowel to soften stools and encourage movement. They work through different mechanisms, and some people use both. Ask your doctor which is appropriate for you.

Is a stool softener a laxative?

Technically yes — stool softeners are classed as emollient laxatives. In everyday use, though, people separate the two: a stool softener adds moisture to stool that is already there, while what most people call a laxative actively encourages the bowel to move. That is why you will see them shelved side by side but described differently.

Which works faster, a stool softener or a laxative?

Stool softeners generally work gradually, and most people describe it taking a day or more to notice a change. Stimulant laxatives are the fastest-acting category. Osmotic laxatives and bulk-forming fiber sit somewhere in between and are usually described as gradual. Speed is not usually the thing to optimise for — the gentler options are often preferred where straining needs to be avoided, such as after surgery or with a fissure. Stimulant laxatives are also not appropriate for everyone, and should not be taken if there is any question of a blockage — severe abdominal pain, a swollen abdomen, vomiting, or inability to pass gas or stool means urgent medical care, not a laxative.

Do I need a stool softener or a laxative for hard stools?

We cannot tell you what you need — that depends on things a page cannot know. What people describe is that hard, dry stools and infrequent bowel movements are different problems and tend to lead to different conversations, so it is worth describing which one is yours. A pharmacist can talk this through in a couple of minutes and it is a very routine question for them. If you have not passed a stool for several days and have a painful or swollen abdomen, or you are vomiting, that needs urgent medical attention rather than a product.

Can laxatives become habit-forming?

Stimulant laxatives (like bisacodyl or senna) can lead to dependence if used regularly over a long period — the bowel may become less responsive without them. Osmotic laxatives and stool softeners are generally considered less likely to cause dependence, but long-term use of any product should be discussed with your doctor.

Stool softener vs laxative: the difference?

Published 10 March 2026 ·Updated 25 August 2026 ·Last reviewed 10 March 2026 by the editorial team ·How we create our content

At a glance

Stool softeners and laxatives both aim to make bowel movements easier, but they work differently. A stool softener adds moisture to the stool so it is softer when it passes. A laxative actively encourages the bowel to move — either by drawing water in, adding bulk, or stimulating the muscles of the intestine.

The distinction matters because the right choice depends on what you are dealing with. After surgery, for instance, many people are advised to focus on keeping stools soft rather than forcing movement. Understanding the difference helps you have a better conversation with your doctor.

Constipation and hard stools have a lot of possible causes, and some of them need a clinician to look into. Nothing on this page can tell you what is behind yours — it only describes what these products are and what people commonly discuss. If this is new, has changed, or is not settling, that is a reason to get it looked at rather than to work through products.

This guide is an overview of what people commonly discuss — it is not a recommendation for any specific product or approach. Your doctor or pharmacist can advise on what is appropriate for you.

Laxatives vs stool softeners at a glance

Four categories sit on the same pharmacy shelf. This table is the short version of what separates them.

	What it is	How it works, in plain language	When people commonly reach for it	Downsides people report
Stool softener	An emollient laxative — docusate is the usual example	Lets water and fat mix into the stool so it is softer on the way out	When stools are hard and dry, and straining is the thing to avoid — very common after surgery	Often described as not strong enough on its own
Osmotic laxative	Macrogol, polyethylene glycol or lactulose	Pulls water into the bowel, softening stool and gently encouraging it to move	When softening alone has not been enough, and for longer-term stool management	Taste; and it can tip into loose stools
Stimulant laxative	Senna, bisacodyl, sodium picosulfate	Prompts the bowel muscle to contract and push stool along	Occasional use when nothing gentler has worked	Cramping is the most common complaint; not intended for routine long-term use
Bulk-forming (fiber)	Psyllium, ispaghula husk, methylcellulose, wheat dextrin	Absorbs water and swells, giving stool bulk and helping it move	As a long-term, everyday foundation rather than a quick fix	Bloating and gas early on; needs plenty of fluid or it can backfire

The short version: stool softeners change what the stool is like. Laxatives change what the bowel does. Everything below is the longer version of that sentence.

How stool softeners work

Stool softeners are sometimes called emollient laxatives, which can add to the confusion. They are understood to work by helping water and fats penetrate the stool, making it softer and easier to pass without straining.

Key things to know:

They do not stimulate the bowel or force a bowel movement
They work gradually — most people report it takes one to three days to notice an effect
They are generally considered gentle, which is why they are commonly recommended after surgery
They are most helpful when the main problem is hard, dry stools rather than infrequent bowel movements

Product information generally describes stool softeners as something taken regularly rather than as-needed. How often, and for how long, comes from the packet or from whoever recommended it — not from us. They work best alongside adequate water intake.

How laxatives work

Laxatives are a broader category. While stool softeners technically fall under the laxative umbrella, when people say “laxative” they usually mean something more active — a product that encourages the bowel to move, not just softens what is already there.

Laxatives work through several different mechanisms, and the type matters. A gentle osmotic laxative is very different from a strong stimulant laxative, even though both are sold in the same pharmacy aisle.

Types of laxative

Osmotic laxatives

These draw water into the bowel, which softens the stool and can gently stimulate movement.

They tend to be well tolerated for longer-term use
People commonly describe them as effective without being harsh
They typically take one to three days to work, though some people notice an effect sooner
Common products: macrogol (Movicol, Laxido in the UK; MiraLAX in the US), lactulose

Osmotic laxatives are the type most commonly discussed in colorectal health communities. They come up frequently in post-surgical recovery discussions and in conversations about managing constipation alongside fissures and hemorrhoids.

Stimulant laxatives

These work by stimulating the muscles of the intestinal wall, causing contractions that move stool through the bowel.

They tend to work faster than other types — often within 6 to 12 hours
They are generally recommended for short-term or occasional use only
Long-term regular use is generally thought to increase the risk of the bowel becoming less responsive without stimulation
They can cause cramping, which is a commonly reported side effect
Common products: Dulcolax (bisacodyl), senna (Senokot), sodium picosulfate

Stimulant laxatives have their place — some people find them helpful for occasional use when other approaches are not working. But they are not typically the first choice for ongoing management, and they are generally not recommended as a routine part of post-surgical recovery because of the cramping they can cause.

Bulk-forming laxatives

These are essentially fiber supplements. They absorb water in the gut and swell, adding bulk to the stool and helping it move through the intestine.

They are considered the gentlest type of laxative
They require plenty of water to work properly — without enough fluid, they can make constipation worse
They take the longest to work — usually two to three days of consistent use
They are suitable for long-term use
Common products: ispaghula husk (Fybogel), psyllium (Metamucil), methylcellulose (Citrucel), wheat dextrin (Benefiber)

For more detail on fiber supplements specifically, see our fiber supplements guide.

Side by side: speed, gentleness and long-term use

	Stool softener	Osmotic laxative	Stimulant laxative	Bulk-forming (fiber)
How it works	Adds moisture to stool	Draws water into bowel	Stimulates bowel contractions	Absorbs water, adds bulk
Time to work	1-3 days	1-3 days	6-12 hours	2-3 days
Gentleness	Very gentle	Gentle	Can cause cramping	Very gentle
Long-term use	Generally safe short-to-medium term	Often used longer-term	Not recommended long-term	Suitable long-term
Common after surgery	Yes — very common	Yes — frequently used	Less common — cramping concern	Yes — often combined
Needs extra water	Yes	Yes	Less critical	Essential

This table is a general comparison. Individual experiences vary, and your doctor can advise on what is appropriate for your situation.

What people commonly use after surgery

This is one of the most common questions people ask, and for good reason. The first bowel movement after colorectal surgery is a source of real anxiety for many people. Nobody wants to strain against a fresh surgical site.

What people commonly report:

Many surgeons prescribe or recommend a stool softener as a baseline part of post-operative care. Docusate — sold as Dulcoease in the UK and Colace in the US — is the one most frequently mentioned in this context.
Some surgeons recommend adding an osmotic laxative alongside the stool softener. The combination of a docusate product and a macrogol product comes up frequently in community discussions — people describe being told to take both to keep stools soft and moving.
Stimulant laxatives are less commonly recommended after surgery because the cramping they cause can increase discomfort at the surgical site.
Fiber supplements are often reintroduced gradually once the initial recovery period is past. Starting them too soon after surgery, before the gut has settled, can cause bloating and discomfort.
People often report the first post-surgical bowel movement being less bad than they feared — though that is not everyone’s experience, and it does not tell you anything about yours. Some pain and a small amount of blood is commonly described after colorectal surgery. Heavy bleeding, blood that keeps coming, pain that is severe or getting worse, or feeling faint, dizzy, or clammy are not things to sit with — contact your surgical team the same day, or call 999 if bleeding is heavy or you feel faint.

The most important thing after surgery: follow your surgeon’s specific instructions. They know what procedure was done, how your recovery is progressing, and what approach makes sense for your situation.

If you have not had a bowel movement for several days after surgery, contact your surgical team. Do not wait and hope — this is exactly the kind of question they expect and want you to ask.

Common products people mention

These are the products that come up most often in community discussions about stool softening and laxatives in the colorectal health space. This is not a recommendation for any specific product — it is simply what people commonly discuss.

Docusate sodium (Dulcoease in the UK, Colace in the US) — the most frequently mentioned stool softener. People describe it as gentle and commonly prescribed after surgery. Some people find it effective on its own; others describe needing to combine it with something else for adequate results.

Macrogol / polyethylene glycol (Movicol and Laxido in the UK, MiraLAX in the US) — an osmotic laxative and one of the most discussed products overall. People describe it as well tolerated and largely tasteless mixed with water. Moving from a docusate product to a macrogol one — or adding one alongside the other — is one of the most common transitions people describe.

Movicol and Laxido contain the same active ingredient (macrogol, which is the European name for polyethylene glycol) combined with electrolytes. People frequently ask whether they are interchangeable — they contain the same active ingredients in the same proportions, and differ mainly in taste, texture, and cost. Your pharmacist can advise on this.

Lactulose — an osmotic laxative in liquid form. It works by drawing water into the bowel. Some people find it effective; others report it causes significant bloating and gas. It tends to be more commonly mentioned in UK and European discussions.

Bisacodyl (Dulcolax) — a stimulant laxative. People describe it as effective for occasional use when other products are not working. Some people report it as a useful “as needed” backup. The cramping it can cause makes it less suitable for routine use, especially during surgical recovery.

Senna (Senokot) — another stimulant laxative. Similar to bisacodyl in how people describe using it — occasionally, when gentler approaches are not enough. Not typically recommended for daily long-term use.

Psyllium (Metamucil) and wheat dextrin (Benefiber) — bulk-forming fiber supplements that function as gentle laxatives. People commonly describe adding these to their routine alongside a stool softener or osmotic laxative. Metamucil is the most widely discussed fiber supplement overall.

For all of these products: follow the instructions on the packaging or your doctor’s guidance. Do not adjust doses on your own, and do not combine multiple products without checking with your doctor or pharmacist first.

What people commonly ask about switching

Switching between products — or adding a second product — is one of the most discussed topics in this space. Here is what commonly comes up:

“Docusate is not doing enough on its own.” This is probably the single most common complaint people share. Many people start with docusate because it was recommended or prescribed, find it insufficient, and then look for alternatives. The most common next step people describe is adding an osmotic laxative alongside it rather than replacing the softener — though whether that is right for any individual is a pharmacist or GP question.

“Should I switch, or add something?” This comes up constantly, and it is not a question this page can answer for you — it depends on what is actually going on and what else you are managing. What people describe is that this is the point they go back to a pharmacist or GP rather than choosing off the shelf. A pharmacist can do this in a few minutes and is asked it daily.

“Is Movicol the same as Laxido?” Both contain macrogol (polyethylene glycol) with electrolytes. They are similar products from different manufacturers. Your pharmacist can advise on any differences in formulation.

“Can I add fiber on top of everything else?” Some people work up to using a stool softener, an osmotic laxative, and a fiber supplement as part of a combined approach. This can work well for some people, but adding too many products at once makes it hard to tell what is helping. If you are considering a multi-product approach, discuss it with your doctor.

If you are managing multiple products, it is especially important to keep your doctor informed about what you are taking and how your symptoms are responding.

“How do I stop taking these?” When the reason for taking a stool softener or laxative resolves — recovery from surgery progresses, a fissure heals, or dietary changes take effect — many people want to step down. People commonly describe tapering gradually rather than stopping suddenly. Your doctor can advise on the best approach for your situation.

What people describe helping

These are patterns people describe, not instructions — how and when to take any product comes from the packet or from whoever recommended it.

Starting with the gentlest effective option and stepping up only if needed
Combining products thoughtfully rather than switching rapidly between them
Drinking plenty of water — this matters with every type of product on this page
Being consistent — taking products regularly rather than only when symptoms flare
Keeping your doctor informed about what you are taking, especially after surgery
Giving each product a few days to work before deciding it is not effective
Tracking your bowel movements so you can describe what is happening accurately to your doctor

What tends to make things worse

Relying on stimulant laxatives as a long-term daily solution
Not drinking enough water, especially when taking fiber or osmotic laxatives
Stopping and starting products inconsistently
Taking multiple new products at once and not knowing which one is working
Following another person’s approach from an online discussion instead of your surgeon’s specific instructions
Waiting too long to contact your surgical team if you have not had a bowel movement after surgery
Straining hard rather than addressing stool consistency — the goal is to make straining unnecessary, not to push harder

What people commonly do

Across the experiences and guides on this site, a few patterns come up again and again. None of this is a recommendation — it is a description of what people describe doing, so you know what is normal to ask about.

They start with the gentlest thing and only step up if they need to. Docusate is usually the first product people mention, and “how long is this meant to take?” is the first thing they wonder — our guide on how long docusate takes to work covers what people typically describe.
They add rather than replace. The most commonly described next step is keeping the softener and adding an osmotic laxative alongside it. If you are weighing up which osmotic option people talk about, Miralax vs lactulose and Movicol vs Laxido cover the two questions that come up most.
They treat fiber as the long game. Bulk-forming fiber is what people tend to stay on once things settle, rather than what they start with in a flare. Our fiber supplements guide walks through the main types.
They fix hydration before they add another product. Every category on this page works less well when fluid intake is low, and this is the single most common reason people describe a product “not working”.
They start writing things down. Once more than one product is involved, people find it hard to say which one changed anything. Tracking stool consistency against the Bristol stool chart for a week or two gives you something concrete to bring to an appointment.
They deal with the underlying cause too. Products manage the symptom. Our constipation management guide and the constipation symptom hub cover the wider picture people usually end up working on alongside.

Talking to your doctor

If you are unsure what type of product is right for you, your doctor or pharmacist can help. It can be useful to describe:

What your stools are like currently — consistency, frequency, and whether you are straining
What you have already tried and what the results were
Whether you are recovering from surgery and what instructions you were given
Any other medications you are taking — some can interact with laxatives or contribute to constipation
How long the issue has been going on

This is a routine conversation that doctors and pharmacists have regularly. There is no need to feel awkward about it — they are familiar with these products and can help you find the right approach.

When to seek urgent care

Call 999 or go to A&E if you have severe abdominal pain with a swollen abdomen, are vomiting and unable to pass gas or stool, are passing a large amount of blood, or feel faint, breathless, or clammy.

Call 111 or contact your GP the same day if you have:

Blood in your stool
No bowel movement for three days or more
A fever, or vomiting alongside constipation
Unexplained weight loss, or a change in your usual bowel habit lasting more than a few weeks
Symptoms that are getting worse rather than better

Call 999 if you get swelling of the face, lips, or throat, a spreading rash, or difficulty breathing after taking any product.

If you are recovering from surgery, contact your surgical team directly — they expect these calls.

Sources

These are the primary references behind the general descriptions on this page. We link to them so you can check anything here against the original, and so you can see where product information ends and personal experience begins.

Anything in this guide described as what “people report” or “people commonly describe” comes from real anonymised cases rather than from these sources. Product-specific instructions always come from the packet or from your pharmacist, never from us.