Drinking more water, eating fiber-rich foods, moving your body, and using an over-the-counter laxative are the most effective ways to get things moving when you’re constipated. Which approach works fastest depends on how backed up you are and whether you need immediate relief or a longer-term fix. Here’s what actually works, why it works, and how quickly you can expect results.
Drink More Water First
Your colon’s job is to absorb water from digested food before it exits your body. When you’re not drinking enough, your colon pulls extra water from your stool to compensate, leaving it dry, hard, and difficult to pass. Simply increasing your water intake softens stool and makes it easier to move through.
There’s no magic number, but if your urine is dark yellow, you’re likely underhydrated. Start by adding two to three extra glasses of water throughout the day. Warm liquids, especially in the morning, can also stimulate gut contractions and help trigger a bowel movement. Coffee works for many people because caffeine stimulates the muscles in your colon, though it can also be dehydrating, so follow it with water.
Eat More Fiber (the Right Kind)
Fiber is the single most important dietary factor for regular bowel movements, and most people don’t get enough. Current guidelines recommend about 14 grams of fiber for every 1,000 calories you eat, which works out to roughly 25 to 30 grams a day for most adults. The average American gets about half that.
Not all fiber does the same thing. Insoluble fiber, found in whole wheat, vegetables, and nuts, doesn’t dissolve in water. It adds bulk to your stool and pushes material through your digestive system. Soluble fiber, found in oats, beans, apples, and citrus fruits, dissolves in water and forms a gel-like material that softens stool. You need both types, but if you’re constipated right now, focus on insoluble fiber to get things moving.
One important caveat: if you suddenly jump from 10 grams of fiber a day to 30, you’ll likely end up bloated and gassy. Increase your intake gradually over a week or two, and drink extra water alongside it. Fiber absorbs water to do its job, so adding fiber without fluid can actually make constipation worse.
Try Prunes or Prune Juice
Prunes are one of the best-studied natural remedies for constipation, and they work through multiple mechanisms at once. They contain sorbitol (a sugar alcohol that draws water into the colon), dietary fiber (especially pectin), and plant compounds called polyphenols that all contribute to their laxative effect.
In a Harvard-highlighted study, people who drank about one cup (200 grams) of prune juice daily saw fewer hard stools after just three weeks, and most had regular bowel movements by seven weeks. If you want faster results, eating whole prunes may work better than juice because of the higher fiber content. Five to six prunes a day is a reasonable starting point.
Move Your Body
Physical activity strengthens the contractions in your gut (called peristalsis) that push stool through your intestines. When you’re sedentary, those muscles lose coordination and strength over time, slowing everything down. Exercise also improves blood flow to your digestive tract, which helps it function more efficiently overall.
You don’t need an intense workout. Any aerobic activity counts: a brisk 20-minute walk, vacuuming the house, dancing, or mowing the lawn. The right intensity is one where your heart rate is elevated, you’re working up a light sweat, and you can talk but not sing. Even a short walk after a meal can be enough to stimulate a bowel movement within an hour or two.
Over-the-Counter Laxatives
When diet and lifestyle changes aren’t enough, laxatives can help. They come in several types, each working differently.
Bulk-forming laxatives are the gentlest option. They add soluble fiber to your stool, which draws in water and makes it bigger and softer. The increased size triggers your colon to contract and push it out. These are the closest thing to a natural fix and are safe for regular use, but they take 12 to 72 hours to work.
Osmotic laxatives pull water from surrounding tissues into your colon. As water collects there, it softens the stool so it’s easier to pass. These typically work within one to three days and are a good middle-ground option.
Stimulant laxatives are the fastest-acting option. They activate the nerves controlling your colon muscles, forcing your colon into motion. These usually produce a bowel movement within 6 to 12 hours. They’re effective for occasional use, but relying on them regularly can make your colon dependent on the stimulation, so save them for when you really need relief.
Stool softeners add moisture to stool so it’s less painful to pass. They’re often recommended after surgery or for people who need to avoid straining. They’re mild and may take a day or two to work.
Positioning and Body Tricks
The angle of your body on the toilet matters more than most people realize. Sitting upright on a standard toilet puts a kink in your rectum that makes it harder to fully evacuate. Elevating your feet on a small stool (so your knees are above your hips) straightens this angle and mimics a squatting position, which is the natural posture for defecation. Many people notice an immediate difference.
Abdominal massage can also help. Using gentle, circular pressure on your lower belly in a clockwise direction (following the path of your colon) can physically encourage stool to move toward the exit. Doing this for five to ten minutes while sitting on the toilet or lying down is worth trying before reaching for a laxative.
Probiotics for Ongoing Constipation
If constipation is a recurring problem rather than a one-time event, probiotics may help over time. Two bacterial strains have the most clinical evidence behind them. Bifidobacterium lactis has been shown to increase how often people have bowel movements. Lactobacillus casei Shirota goes further, improving stool consistency and reducing pain, straining, bloating, and that frustrating feeling of incomplete emptying.
Probiotics aren’t a quick fix. They take weeks of regular use to shift your gut environment, and results vary from person to person. You can find these strains in certain yogurt drinks and supplements. Look for the specific strain name on the label rather than just the general species.
How to Tell If It’s More Serious
Occasional constipation is extremely common and usually resolves with the strategies above. On the Bristol Stool Scale (a medical classification system), constipation shows up as Type 1 (small, hard pebbles) or Type 2 (lumpy, sausage-shaped but hard). Both indicate stool has spent too long in your intestines and lost too much water.
Constipation that doesn’t respond to fiber, fluids, and laxatives, or that comes with blood in your stool, unexplained weight loss, severe abdominal pain, vomiting, or fever, signals something beyond a sluggish gut. These are red flags that warrant a medical evaluation to rule out structural or metabolic causes.