Bisacodyl is a stimulant laxative you can use when you need a predictable bowel movement. You’ll see it sold as tablets or suppositories (brand names include Dulcolax). It speeds up stool movement by stimulating the bowel and increasing fluid in the colon, so stool passes easier.
Oral bisacodyl (enteric-coated tablets) usually works in 6–12 hours — that’s why many people take it at bedtime and expect results the next morning. Rectal bisacodyl (suppositories) works faster, often within 15–60 minutes. For colonoscopy prep or rapid relief, doctors give specific instructions—follow those exactly.
Typical adult doses: oral 5–15 mg once daily (do not exceed recommended dose on the package), suppository commonly 10 mg. For kids and special medical situations, always follow a doctor’s directions or the product label.
Short-term use is generally safe. The most common effects are stomach cramps, diarrhea, nausea, and possible rectal irritation with suppositories. If you get severe abdominal pain, fever, or persistent vomiting, stop the medicine and get medical help — these can be signs of a serious problem like bowel obstruction or appendicitis.
Don’t crush or chew enteric-coated tablets. Avoid taking bisacodyl within one hour of antacids, milk, or dairy — these can damage the tablet coating and cause stomach irritation. Don’t use bisacodyl for ongoing daily relief without a doctor’s OK. Overuse may cause dehydration or electrolyte imbalance, especially if you get repeated diarrhea.
Keep in mind: if constipation lasts more than a week, keeps returning, or comes with blood in stool or weight loss, see your doctor. Pregnant or breastfeeding? Check with your healthcare provider before using bisacodyl.
Simple habits reduce the need for laxatives: drink enough water, add fiber gradually, move more, and try to establish a regular bathroom routine. If lifestyle changes don’t help, bisacodyl can be a useful short-term tool while you and your clinician investigate the cause.
Final quick checklist: use the right form (oral for overnight, suppository for faster action), follow label dosing, separate from milk/antacids by an hour, don’t use long term without advice, and seek care for severe pain or signs of dehydration.
In today's blog post, we're going to dive into the science behind Bisacodyl, a popular laxative. It works by stimulating the muscles in our intestines, causing them to contract more often and with increased force. This helps to move stool through the colon more quickly, providing relief from constipation. Additionally, Bisacodyl increases the amount of water in the intestines, making the stool softer and easier to pass. Overall, this medication serves as an effective option for those in need of a little help in the bathroom department.
View more