What Can I Take To Have A Bowel Movement?

Constipation is uncomfortable, and when you need relief, you want a clear answer. The most effective and safest options for a bowel movement are over-the-counter laxatives, but not all work the same way. Fiber supplements like psyllium, osmotic laxatives like polyethylene glycol (MiraLax), and stimulant laxatives like bisacodyl (Dulcolax) are common choices — and each has a different mechanism and speed.

What is constipation?

Constipation means having fewer than three bowel movements per week, or passing stool that is hard, dry, and difficult to pass. It happens when waste moves too slowly through the colon, allowing too much water to be absorbed. Occasional constipation is common. Persistent constipation can be a sign of an underlying issue such as diet, medication, or a medical condition.

Most people experience constipation at some point. It is usually not serious, but it can cause bloating, pain, and straining. Understanding which product to take depends on how quickly you need relief and what is causing the problem.

Fiber supplements

Fiber supplements are the mildest option. They work by absorbing water and adding bulk to stool, which helps it move through the colon more quickly. Common examples include psyllium (Metamucil), methylcellulose (Citrucel), and calcium polycarbophil (FiberCon). They are best for people who do not get enough fiber in their diet and have mild, ongoing constipation.

These supplements are not fast-acting. It can take 12 to 72 hours to produce a bowel movement. They must be taken with plenty of water — at least 8 ounces per dose — otherwise they can worsen constipation. Some people experience bloating and gas when first starting fiber supplements. Increasing the dose gradually can help reduce side effects.

Psyllium has the strongest evidence for improving stool consistency and frequency. Research consistently shows it is effective for chronic constipation. Methylcellulose and calcium polycarbophil are less well-studied but are also considered safe and effective by most clinicians.

Stool softeners

Stool softeners, such as docusate (Colace), are often marketed as a gentle option. They work by allowing water and fats to mix more easily into stool, making it softer. However, the evidence for their effectiveness is mixed. Some studies suggest docusate is no better than a placebo at increasing bowel movement frequency. Many clinicians still recommend it for preventing constipation — for example, after surgery — but not for treating existing constipation.

If you are already constipated, a stool softener alone may not be enough. It can take 12 to 72 hours to work. It is generally safe but should not be taken with mineral oil because of the risk of aspiration.

Osmotic laxatives

Osmotic laxatives draw water into the colon through osmosis, which softens stool and stimulates movement. The most common and well-studied option is polyethylene glycol (PEG) sold as MiraLax. It is generally considered safe for short-term use and is often recommended first-line for constipation by clinical guidelines.

PEG usually produces a bowel movement within 24 to 48 hours. It is tasteless and can be mixed into any beverage. Another osmotic laxative is lactulose, a prescription or OTC sugar-based solution. It works similarly but can cause more gas and bloating. Saline laxatives such as milk of magnesia (magnesium hydroxide) are also osmotic and work within 30 minutes to 6 hours if taken on an empty stomach. However, long-term use of magnesium-based laxatives can affect kidney function, so they should not be used regularly without medical supervision.

Osmotic laxatives are generally safe for most adults. PEG has been studied extensively and is not habit-forming. However, they may cause cramping and diarrhea if taken in excess.

Stimulant laxatives

Stimulant laxatives trigger intestinal muscle contractions to push stool through the colon. Common examples include bisacodyl (Dulcolax) and senna (Senokot). These are faster-acting than fiber or osmotic laxatives. A bisacodyl suppository can produce a bowel movement in 15 to 60 minutes. Oral bisacodyl usually works within 6 to 12 hours. Senna typically takes 6 to 12 hours.

Stimulant laxatives are effective for acute constipation but are not meant for long-term daily use. With regular use, the colon can become less responsive, leading to dependence. Many people mistakenly believe stimulants are harmful in any amount. In reality, short-term use (up to one week) is considered safe for most adults. However, if you need a laxative more than three times per week, you should talk to a doctor to identify the underlying cause.

What can I take to have a bowel movement?

If you need a bowel movement now — meaning within the next hour — a stimulant suppository or enema is the fastest option. If you can wait a day or two, an osmotic laxative like polyethylene glycol is effective and gentle. For ongoing mild constipation, a fiber supplement taken daily with adequate water is the safest long-term strategy.

No single product works best for everyone. Your choice depends on how quickly you need relief and what your bowel habits normally look like. It is also important to consider whether you have any health conditions that affect your kidneys, heart, or digestive system. Some laxatives, especially those containing magnesium or sodium, can be dangerous in certain medical situations.

Natural options and home remedies

Many people turn to natural remedies before buying laxatives. Prunes and prune juice are well-supported by research. Dried plums contain both fiber and sorbitol, a sugar alcohol that draws water into the bowel. Some studies show that prunes are more effective than psyllium for improving stool frequency.

Coffee, especially regular caffeinated coffee, can stimulate bowel contractions in some people within minutes. The effect is real but not consistent — about 30% of people experience it. Coffee also contains acids that increase movement in the colon.

Warm water, especially in the morning, may help by hydrating the bowel, but there is limited evidence that it alone causes a bowel movement. Magnesium-rich foods like almonds, spinach, and bananas may help by providing magnesium, which acts as a mild osmotic laxative in higher amounts. However, getting enough magnesium from food for a laxative effect is difficult for most people.

Exercise, particularly walking or abdominal movement, can shorten bowel transit time. The evidence is strongest for regular physical activity rather than a single session. Activity stimulates intestinal muscles just as it does skeletal muscles.

What to avoid

Not all constipation remedies are safe. Mineral oil, when taken orally, can coat the lungs if accidentally aspirated, leading to lipoid pneumonia. It is no longer recommended by most clinicians. Castor oil is a strong stimulant that can cause cramping and electrolyte imbalance. It is rarely used for typical constipation.

Some herbal teas marketed as “detox” or “slim” contain senna or other stimulants. If taken regularly, they can cause dependency and damage the colon lining. Always check the label. If you see senna, cascara, or aloe latex as an ingredient, use them only occasionally.

When to see a doctor

You should see a doctor if constipation lasts longer than three weeks despite home treatment, if you have severe pain or bleeding, if you have a family history of colon cancer, or if you are over 50 and have a sudden change in bowel habits that persists. Also seek medical advice if you have to strain excessively or always feel incompletely empty.

Chronic constipation may require prescription medications such as lubiprostone, linaclotide, or prucalopride. These drugs work through different mechanisms than OTC laxatives and are used only after other options fail. They require a doctor’s evaluation to check for underlying conditions like slow-transit constipation or pelvic floor dysfunction.

Risks of long-term laxative use

Using any laxative daily for months or years can lead to problems. Osmotic laxatives can cause electrolyte imbalances, especially in people with kidney disease. Stimulant laxatives may cause the colon to stop working on its own. Laxative dependency is real, and it is underrecognized. The colon can become atonic — meaning it does not contract without chemical stimulation.

If you rely on laxatives more than twice a week, you likely have a treatable underlying condition that should be addressed, not masked with laxatives. A gastroenterologist can help.