For most people dealing with constipation, the fix starts with three things: more fiber, more water, and more movement. If those don’t work within a few days, over-the-counter laxatives are the next step, and there are several types that work in different ways. Knowing which one to reach for depends on how long you’ve been backed up and how uncomfortable you are.
Food and Drink Fixes to Try First
Fiber is the single most effective dietary tool for keeping things moving. It absorbs water in your digestive tract, making stool softer and bulkier, which triggers your colon to push it along. Most adults need between 22 and 34 grams of fiber per day, depending on age and sex. Men aged 19 to 30 need the most at about 34 grams, while women over 50 need about 22 grams. The average American gets roughly half of that.
Good sources include beans, lentils, whole grains, berries, broccoli, and pears. But the standout remedy is prunes. One cup of pitted prunes packs about 12 grams of fiber, and prunes also contain sorbitol, a natural sugar alcohol that pulls water into the gut and acts as a gentle laxative on its own. A reasonable starting amount is six prunes or four to eight ounces of prune juice per day. For children six months and older, two to four ounces of prune juice is a typical starting point.
Water matters just as much as fiber. Fiber without adequate fluid can actually make constipation worse, because the bulk it creates needs moisture to move through your intestines. Aim for at least eight cups of water a day, more if you’re increasing your fiber intake. Coffee can also stimulate contractions in the colon for some people, though it shouldn’t replace water.
Physical activity helps too. Even a daily 20- to 30-minute walk can stimulate the muscles in your intestines. Sitting for long periods slows everything down.
Bulk-Forming Laxatives
If dietary changes alone aren’t enough, bulk-forming laxatives are the gentlest over-the-counter option and the closest thing to what fiber does naturally. Products containing psyllium or polycarbophil work by drawing water into your stool, making it larger and softer. The added bulk signals your colon to contract and move things along. They typically take 12 hours to three days to work, so they’re not a quick fix, but they’re safe for regular use.
You need to drink a full glass of water with each dose. Skipping the water can cause the fiber to clump and create a blockage, which is the opposite of what you want.
Osmotic Laxatives
Osmotic laxatives pull water from other parts of your body into your colon, softening stool so it passes more easily. They generally take one to three days to work, though saline types (like magnesium-based products) can act faster, sometimes within 30 minutes to six hours. Magnesium citrate is one of the more common choices in this category and works well for occasional use.
The main risk with osmotic laxatives, especially magnesium-based ones, is electrolyte imbalance. Your body relies on a careful balance of minerals like potassium, sodium, and magnesium to regulate your heart rhythm and muscle function. Using these products too frequently or in high amounts can disrupt that balance, potentially causing weakness, confusion, or heart rhythm changes. They’re best reserved for short-term, occasional relief.
Stool Softeners
Stool softeners work differently from laxatives. Instead of stimulating your colon or drawing in water, they add moisture and fat directly to your stool so it’s easier to pass. They’re typically taken at bedtime and come in capsule, tablet, liquid, or syrup form. Stool softeners are a good choice when straining is the main problem, such as after surgery, with hemorrhoids, or during pregnancy.
They’re among the mildest options available, which also means they’re not the most powerful. If you’re severely backed up, a stool softener alone may not be enough.
Stimulant Laxatives
When gentler methods haven’t worked, stimulant laxatives are the heavy hitters. They activate the nerves controlling your colon muscles, essentially forcing your intestines into motion. They typically work within 6 to 12 hours, making them a reasonable choice when you need relief relatively quickly.
The trade-off is that stimulant laxatives carry the highest risk of dependency. Using them regularly for weeks or months can actually decrease your colon’s natural ability to contract, making constipation worse over time. They’re meant for occasional use, not as a daily habit.
Lubricant Laxatives
Mineral oil is the main lubricant laxative. It coats stool so it slides through more easily and is especially useful when stool feels stuck low in the bowel, or when hemorrhoids or anal fissures make passing stool painful. A tablespoon taken with breakfast or lunch is the standard approach.
Don’t use mineral oil for more than a few days. It interferes with absorption of certain vitamins, and if accidentally inhaled (which can happen when swallowing the liquid), it can cause a type of pneumonia. Also avoid taking mineral oil at the same time as a stool softener, because the softener can increase how much mineral oil your body absorbs.
Constipation During Pregnancy
Pregnancy slows digestion significantly, and constipation is one of the most common complaints. The first approach is the same as for anyone else: more water, more fiber-rich foods, and regular physical activity like walking. Prune juice is a safe and effective option during pregnancy.
If lifestyle changes aren’t enough, stool softeners are generally considered safe because very little of the active ingredient gets absorbed into the body, meaning it’s unlikely to affect the baby. Bulk-forming laxatives are also considered safe for the same reason. Osmotic and stimulant laxatives can be used during pregnancy as well, but it’s worth confirming the specific product with your healthcare provider before starting anything new.
Risks of Long-Term Laxative Use
Any laxative used too frequently can become a crutch. Over weeks or months, regular use can reduce your colon’s natural ability to contract, creating a cycle where you need more of the product to get the same result. This is especially true for stimulant laxatives, but it applies across categories.
Long-term use can also cause electrolyte imbalances, which affect calcium, potassium, magnesium, sodium, and chloride levels in your body. These minerals regulate heart rhythm, muscle function, and brain signaling. When they’re thrown off, you can experience weakness, confusion, and in serious cases, seizures or dangerous changes in heart rhythm. The safest long-term strategies for constipation are dietary fiber, adequate hydration, and regular exercise.
Signs That Need Medical Attention
Most constipation resolves with the approaches above. But if you notice blood in your stool, experience severe abdominal pain, or your constipation lasts longer than three weeks despite trying these remedies, those are signals that something else may be going on. Unexplained weight changes or a sudden shift in your normal bowel pattern also warrant a conversation with a healthcare provider.