Laxido typically takes 1 to 2 days to start working. Some people notice results within 24 hours, while others need the full 48 hours before having a bowel movement. If you’re using it for a more severe backup like faecal impaction, the timeline can stretch longer because higher doses are used over several days.
Why It Takes a Day or Two
Laxido is an osmotic laxative, meaning it works by drawing water into the bowel to soften the stool and make it easier to pass. The active ingredient, macrogol, is a large molecule that isn’t absorbed into the body. Instead, it travels through the gut holding onto water, gradually increasing the moisture content of what’s sitting in your colon. This process isn’t instant because the macrogol needs time to travel through the digestive tract and accumulate enough fluid to trigger a comfortable bowel movement.
This is fundamentally different from stimulant laxatives like bisacodyl or senna, which work by directly prompting the muscles of the bowel wall to contract. Stimulant types can act faster, sometimes within 6 to 12 hours, but they’re more likely to cause cramping. Laxido’s slower, gentler approach is why it’s often recommended as a first option for chronic constipation.
How to Take It
Each adult sachet should be dissolved in 125ml of water, roughly a quarter of a pint. Stir it well until the powder is fully dissolved, then drink the whole glass. For children’s (paediatric) sachets, use half that volume: about 62.5ml of water. If you mix a sachet and can’t drink it right away, you can cover it and store it in the fridge, but it needs to be used within six hours. After that, throw it away.
For regular constipation, the usual dose is one to three sachets a day, spread throughout the day rather than taken all at once. For faecal impaction, the dosing schedule is more intensive, with up to eight sachets taken over a six-hour window. Your pharmacist or GP will tell you exactly how many to take and for how long based on your situation. It’s worth noting that the impaction regimen is usually a short course of a few days, not something you’d continue indefinitely.
What to Expect in the First Few Days
Don’t be surprised if nothing happens on day one. The most common experience is that your first bowel movement comes sometime on the second day. The stool will typically be softer than usual, which is exactly the point. You may need to adjust the number of sachets up or down depending on the result. If your stools become too loose or watery, dropping to a lower dose usually fixes this quickly.
Some people experience side effects as their body adjusts. The most common ones, affecting more than 1 in 100 people, include stomach aches or rumbling, bloating and wind (both burping and flatulence), and feeling sick or occasionally vomiting. These tend to settle down after the first few days. If bloating is bothersome, spreading your sachets further apart during the day can help.
If It Hasn’t Worked After 3 Days
If you’ve been taking Laxido for two to three days at the recommended dose and nothing has happened, it’s reasonable to check a few things first. Make sure you’re dissolving the sachet in the correct amount of water, as using too little liquid can reduce its effectiveness. Drinking extra fluids throughout the day on top of the Laxido solution also helps, since the macrogol needs available water to do its job.
If you’ve been taking one sachet a day, your dose may simply need increasing. Most adults can safely take up to three sachets daily for chronic constipation. If three sachets a day for several days still hasn’t produced results, that’s a sign to speak with your GP, as there may be something else going on that needs investigation.
Using Laxido Long Term
Laxido is considered safe for longer-term use compared to stimulant laxatives. Because macrogol isn’t absorbed into the bloodstream and doesn’t stimulate the bowel muscles directly, it doesn’t carry the same risk of the bowel becoming “dependent” on it. Many people with chronic constipation use it for weeks or months at a time, gradually reducing the dose as their bowel habits improve.
That said, ongoing constipation lasting more than a few weeks deserves a proper review. Constipation that doesn’t respond to an osmotic laxative, or that keeps returning the moment you stop taking it, can sometimes point to dietary factors, medications you’re taking, or underlying conditions worth checking.
Who Should Not Take Laxido
Laxido is not suitable for anyone with a bowel obstruction or perforation, or severe inflammatory bowel conditions such as Crohn’s disease, ulcerative colitis, or toxic megacolon. People with an allergy to macrogol or any of the other ingredients in the sachet (which include electrolytes like sodium and potassium salts) should also avoid it. If you have kidney problems, the electrolyte content is worth flagging with your pharmacist, as the salts in each sachet could matter at higher doses.