Most constipation resolves with a combination of dietary changes, more fluids, and movement. The fix is usually straightforward: get more fiber (aim for 14 grams per 1,000 calories you eat), drink enough water to keep that fiber working, and give your body consistent physical activity. If those basics don’t help within a week, over-the-counter laxatives or a conversation with your doctor can get things moving again.
Start With Fiber, but Do It Gradually
Fiber is the single most effective dietary tool for constipation, but not all fiber works the same way. Insoluble fiber, found in whole wheat, vegetables, and nuts, speeds the passage of food through your digestive tract and adds physical bulk to your stool. Soluble fiber, found in oats, beans, apples, and citrus fruits, absorbs water and turns into a gel-like substance that makes stool softer and easier to pass. You want both types in your diet.
The U.S. Dietary Guidelines recommend 14 grams of fiber for every 1,000 calories you eat. For most adults, that works out to roughly 25 to 35 grams per day. Most Americans get about half that. Closing the gap makes a real difference, but increase your intake slowly, adding a few grams per day over the course of a week or two. Jumping from 12 grams to 30 grams overnight will leave you bloated and gassy, which doesn’t help anyone’s motivation.
Practical ways to add fiber: swap white bread for whole grain, toss a handful of berries on your breakfast, eat the skin on your potatoes and apples, and add beans or lentils to soups and salads. If whole foods alone aren’t enough, a bulk-forming fiber supplement (like psyllium husk) draws water into your stool, making it bigger and softer so your colon can push it through more easily.
Drink More Water Than You Think You Need
Fiber without adequate water can actually make constipation worse. Soluble fiber pulls water into your intestines to soften stool, and insoluble fiber needs moisture to do its bulking job. If you’re dehydrated, your colon absorbs more water from waste to compensate, leaving stool hard and dry. There’s no single magic number, but aiming for six to eight glasses of water a day is a reasonable starting point, and more if you’re active or increasing your fiber intake.
Prunes Are More Than Folk Wisdom
Prunes work because they contain sorbitol, a natural sugar alcohol that draws water into the intestines much like an osmotic laxative. They also provide fiber. For mild constipation, half a cup of prune juice twice a day is a reasonable dose. Some people find that up to 8 ounces in the morning is enough to restore regular bowel movements. For daily maintenance rather than acute relief, about 4 ounces a day helps many adults stay regular. Whole prunes (about five or six) work just as well as the juice and add more fiber.
Move Your Body to Move Your Bowels
Physical activity stimulates the muscles in your intestinal wall, helping push waste through your system. You don’t need intense exercise. A 20- to 30-minute walk after a meal can make a noticeable difference, especially if you’ve been sedentary. The combination of gravity, abdominal muscle engagement, and increased blood flow to the gut all contribute. Consistency matters more than intensity here.
Change Your Position on the Toilet
The standard seated toilet position forces you to work harder than necessary. When you sit upright, the muscle that wraps around your rectum only partially relaxes, creating a kink that requires straining to push past. Squatting straightens the pathway between your colon and rectum, reducing the effort needed and promoting a more complete feeling of emptying.
You don’t need a squat toilet to get this benefit. A small footstool placed in front of your toilet, raising your knees above your hips, mimics the squatting angle. Lean slightly forward with your elbows on your knees. Research from Loughborough University found that this kind of position reduces straining and the time spent on the toilet.
Over-the-Counter Laxatives and How They Differ
If diet, water, and movement aren’t enough, several types of OTC laxatives can help. They work through different mechanisms, and choosing the right one depends on what’s going on.
- Bulk-forming laxatives are essentially fiber supplements. They add soluble fiber to your stool, drawing in water to make it larger and softer. These are the gentlest option and safe for long-term use, but they take 12 to 72 hours to work.
- Osmotic laxatives pull water from other parts of your body into your colon, softening stool so it passes more easily. These typically work within one to three days.
- Stool softeners increase the amount of water and fat your stool absorbs, making it softer. They’re often recommended after surgery or childbirth when straining is especially undesirable. They’re mild but can take a few days.
- Stimulant laxatives activate the nerves controlling your colon muscles, forcing contractions that push stool along. These work faster, usually within 6 to 12 hours, but they’re meant for short-term use. Relying on them regularly can make your colon less responsive over time.
- Lubricant laxatives coat the inside of your colon so stool stays moist and slides through more easily. These are a short-term option, not something to use daily.
Start with the gentlest approach (bulk-forming or osmotic) and move to stimulant laxatives only if softer methods aren’t working.
Probiotics for Gut Motility
Certain probiotic strains can help speed up the time it takes food to travel through your digestive system. Bifidobacterium lactis, in particular, has been shown to improve gastrointestinal transit time. Probiotics aren’t a quick fix for acute constipation the way a laxative is, but taken consistently they may help establish more regular patterns over weeks. You can find these strains in fermented foods like yogurt, kefir, and sauerkraut, or in supplement form.
Check Your Medications
Some of the most commonly prescribed drugs cause constipation as a side effect. Opioid pain medications essentially put the nerves in your gut to sleep, slowing movement dramatically. Antidepressants affect nerve signaling in the gut the same way they do in the brain, which can slow things down. Blood pressure medications known as calcium-channel blockers relax the smooth muscles in your intestinal wall along with the muscles in your blood vessels. Anticholinergic drugs, used for allergies, overactive bladder, and other conditions, block a chemical messenger that helps muscles contract, and your gut muscles are no exception.
If you started a new medication and noticed a change in your bowel habits, that connection is worth raising with your prescriber. Sometimes adjusting the dose or switching to an alternative solves the problem without needing to add a laxative on top.
When Constipation Signals Something Serious
Most constipation is uncomfortable but harmless. Certain symptoms alongside constipation, however, warrant prompt medical attention: blood in your stool, unexplained weight loss, vomiting, severe abdominal pain, or major bloating combined with not having a bowel movement for an extended period. If you don’t normally deal with constipation and it lasts longer than a week without responding to basic remedies, that’s also worth getting checked out.