What is Bentyl: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Bentyl overview

BRAND NAMES:

  • Bentyl, Bentyl, Dicyclocot

Generic Names:

  • Dicyclomine Hcl

Uses:

  • Treats irritable bowel syndrome., Treats irritable bowel syndrome.

Therapeutic Classes:

  • Gastrointestinal Agent, Gastrointestinal Agent

Forms:

  • Injectable, Capsule, Tablet, Long Acting Tablet, Liquid

How it’s taken:

  • By mouth, By injection

What is Bentyl used for?

What form(s) does Bentyl come in

  • Injectable

  • Capsule

  • Tablet

  • Long Acting Tablet

  • Liquid

What are common Bentyl doses?

  • Ampule 2ML of 10MG/ML

Common Bentyl prescriptions

  • Bentyl
    30 tablets bottle

  • Bentyl
    10mg capsule

  • Bentyl
    20mg tablet

How to take Bentyl

  • Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.

  • Swallow the extended-release tablet whole. Do not break, crush or chew.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Swallow the extended-release tablet whole. Do not break, crush or chew.

  • Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Injection routeYour doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot into one of your muscles.

  • Injection routeA nurse or other health provider will give you this medicine.

  • Injection routeYour doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot into one of your muscles.

  • Injection routeA nurse or other health provider will give you this medicine.

What to do if you miss a dose of Bentyl

  • Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any outdated medicine or medicine no longer needed.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Bentyl contraindications

  • You should not use this medicine if you have had an allergic reaction to dicyclomine. Do not use this medicine if you have glaucoma, myasthenia gravis, or trouble urinating because of a blockage (such as an enlarged prostate). Make sure your doctor knows about all digestion problems you have, including reflux esophagitis (GERD), or severe ulcerative colitis. You should not use this medicine if you are breast feeding. This medicine should not be given to infants less than 6 months old.

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to dicyclomine, if you are breastfeeding, or if you have glaucoma, myasthenia gravis, a bowel blockage, an enlarged prostate, or reflux esophagitis.

Bentyl warnings

  • Make sure your doctor knows if you are pregnant, if you have liver disease, kidney disease, or overactive thyroid. Tell your doctor about any heart or blood vessel problems you have, including heart rhythm problems, congestive heart failure, or high blood pressure. Make sure your doctor knows if you have ongoing diarrhea, or an ileostomy or colostomy. Tell your doctor if you have autonomic neuropathy (a nerve problem), or a hiatal hernia (problems with your esophagus).

  • This medicine may make you sweat less. Your body could get too hot if you do not sweat enough. Stay out of hot places. Try to stay indoors or somewhere cool during hot weather. If you have a fever, call your doctor for advice. If your body gets too hot, you might feel dizzy, weak, tired, or confused. You might have an upset stomach or vomit. Call your doctor if you are too hot and cannot cool down.

  • This medicine may make you drowsy. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.

  • Your eyes may be more sensitive to bright light while you are using this medicine. You may want to wear sunglasses in bright sunlight.

  • Tell your doctor if you are pregnant, or if you have liver disease, kidney disease, GERD, ulcerative colitis, autonomic neuropathy, or any heart or blood vessel problems, including heart rhythm problems, heart failure, or high blood pressure.

  • This medicine may make you sweat less, which makes your body more sensitive to heat. This can cause heat stroke. Avoid activities, such as intense exercise, and weather that may cause you to overheat. Make sure you do not become dehydrated.

  • This medicine may make you drowsy or dizzy, or cause blurry vision. Do not drive or doing anything else that could be dangerous if you are not alert or cannot see well.

  • This medicine is not for long-term use.

  • Fast, slow, or uneven heartbeat

  • Restlessness, agitation, trouble speaking or walking

Bentyl interactions

  • Some medicines can affect how dicyclomine works. Tell your doctor if you are using amantadine, digoxin, metoclopramide, an MAO inhibitor (MAOI), a narcotic pain medicine (such as meperidine), medicine for heart rhythm problems (such as quinidine), an antihistamine, medicine to treat depression, a phenothiazine, or a steroid medicine.

  • This medicine may make you sweat less, which makes your body more sensitive to heat. This can cause heat stroke. Avoid activities, such as intense exercise, and weather that may cause you to overheat. Make sure you do not become dehydrated.

  • This medicine may make you drowsy or dizzy, or cause blurry vision. Do not drive or doing anything else that could be dangerous if you are not alert or cannot see well.

  • This medicine is not for long-term use.

  • You should not use dicyclomine within 2 to 3 hours of taking antacids (Maalox®, Mylanta®) or medicine to stop diarrhea.

  • Your eyes may be more sensitive to bright light while you are using this medicine. You may want to wear sunglasses in bright sunlight.

  • Make sure your doctor knows if you are using amantadine (Symmetrel®), digoxin (Lanoxin®), or a belladonna medicine such as atropine, hyoscyamine, scopolamine, Anaspaz®, Arco-Lase® Plus, or Donnatal®. Tell your doctor if you are using an MAO inhibitor such as Eldepryl®, Marplan®, Nardil®, or Parnate®.

  • Tell your doctor if you are also using narcotic pain medicine, medicine for heart rhythm problems, an antihistamine, medicine to treat depression, phenothiazines (medicines to treat certain mental problems or severe nausea or vomiting), or a steroid medicine. Meperidine (Demerol®) is a narcotic pain medicine. Some medicines for heart rhythm problems are disopyramide, procainamide, quinidine, Cardioquin®, Norpace®, Procanbid®, or Quinaglute®. Diphenhydramine (Benadryl®) is an antihistamine. Some phenothiazine medicines are Compazine®, Mellaril®, Phenergan®, Serentil®, Tacaryl®, Thorazine®, or Trilafon®. Some medicines to treat depression are amitriptyline, nortriptyline, Norpramin®, or Vivactil®. Cortisone and prednisone are steroid medicines.

Bentyl side effects

Serious Side Effects

  • Restlessness, agitation, trouble speaking or walking

  • Fast, slow, or uneven heartbeat

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Confusion, fever, weakness, hot, dry skin

  • Decrease in how much or how often you urinate

  • Diarrhea, constipation, nausea, vomiting, stomach pain

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Fast or uneven heartbeat.

  • Restlessness, agitation, or confusion.

  • Severe dizziness or light-headedness.

  • Trouble focusing or other vision changes.

Less Serious Side Effects

  • Dry mouth.

  • Drowsiness or weakness.

  • Trouble focusing or other vision changes.

  • Decrease in how much or how often you urinate.

  • Nausea, vomiting, constipation, or stomach pain.

  • Pain or swelling where the shot was given

  • Vision changes, dizziness, sensitivity of eyes to light

  • Dry mouth

  • Sleepiness