Dicyclomine is a generic prescription drug for people with irritable bowel syndrome (IBS). It relieves abdominal pain and cramping by relaxing the muscles in the intestines. Doses are usually taken orally four times a day as a capsule, tablet, or oral solution.
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Dicyclomine HCl
Relieves abdominal pain and cramping due to irritable bowel syndrome
Anticholinergic, antispasmodic, gastrointestinal agent
Capsule, tablet, oral solution (liquid), injection
By mouth or injection
Dicyclomine relieves abdominal pain and cramping in people with irritable bowel syndrome.
Tablet
20 mg
Capsule
10 mg
Oral solution (liquid)
10 mg/5 mL
Injection
10 mg/mL
For irritable bowel syndrome: 20–80 mg taken by mouth four times daily
Injection: 10–20 mg IM injection four times daily for one to two days in people who cannot take the drug orally
Find more detailed information about dicyclomine dosage, forms, and strengths here.
Dicyclomine HCl
2ml of 10mg/ml ampule
Dicyclomine HCl
473ml of 10mg/5ml bottle
Dicyclomine HCl
10mg capsule
Dicyclomine HCl
20mg tablet
Dicyclomine HCl
2ml of 10mg/ml vial
Take your medicine as directed. The dose may need to be changed several times at the beginning of therapy.
Doses can be taken with or without food.
Swallow tablets or capsules whole. Do not break, crush, or chew.
Measure the oral liquid medicine with a calibrated oral syringe or medicine measuring cup provided. Do not use tableware or kitchen measuring devices.
Take other medications at least one hour before taking a dose of dicyclomine.
Do not take antacids at the same time as dicyclomine.
Store dicyclomine at room temperature protected from heat.
Take a dose as soon as you remember.
If it is almost time for the next dose, wait until then and take a regular dose.
Do not take extra medicine to make up for a missed dose.
This medicine is not right for everyone.
Dicyclomine is contraindicated in:
Anyone who is actively bleeding and may be unstable
Women who are breastfeeding
Children younger than 6 months old
Do not use dicyclomine if you have had an allergic reaction to dicyclomine, are breastfeeding, or if you have:
Glaucoma
Urinary blockage
Gastrointestinal blockage
Severe ulcerative colitis
Reflux esophagitis
Make sure healthcare professionals treating you are aware that you are taking dicyclomine.
Because of possible side effects, make sure to keep all appointments with the prescriber.
Before taking dicyclomine, tell the prescriber if you are pregnant, breastfeeding, or have:
Heart or blood vessel problems
High blood pressure
Liver problems
Kidney problems
Digestive system problems, especially ulcerative colitis, blockage, hiatal hernia, or diarrhea
Overactive thyroid
Enlarged prostate
Autonomic neuropathy
Fever
The prescriber also needs to know if you’ve had certain intestinal surgeries, particularly:
An ileostomy
A colostomy
This medicine may make you sweat less, making you vulnerable to overheating.
Avoid hot places.
Stay indoors when it is hot outside.
Be cautious when exercising.
This medicine can cause drowsiness, dizziness, or blurred vision. Avoid driving, using machines, or doing any other risky activity until you know how dicyclomine affects you.
Your eyes may be more sensitive to bright light while you are using this medicine. You may want to wear sunglasses in bright sunlight.
To avoid possible drug interactions, tell the prescribing healthcare provider about all the prescription drugs, over-the-counter medicines, and supplements regularly taken before starting dicyclomine, particularly:
Other anticholinergic drugs, including certain types of asthma medications
Drugs that treat glaucoma
Drugs that treat diarrhea
Drugs that treat constipation
Drugs that speed up stomach emptying
Antipsychotics
Drugs that cause constipation, such as opioids
Drugs that make you urinate called thiazide diuretics
Antihistamines
Potassium supplements or potassium-containing drugs
Digoxin
Antacids should be taken at least two hours before a dicyclomine dose.
Find more detailed information about dicyclomine interactions to avoid here.
Serious side effects
Talk to a healthcare provider if you notice any signs or symptoms of a possible serious side effect, including:
Racing heartbeats, irregular heartbeats
Severe dizziness, lightheadedness, fatigue, weak pulse, low blood pressure
Restlessness, agitation, confusion, disorientation, hallucinations, delirium
Difficulty breathing, stopped breathing
Allergic reaction: Itching, hives, swelling of the face, mouth, or throat, trouble breathing, trouble swallowing, throat tightness, fast or slow pulse, lightheadedness
Less serious side effects
Dizziness
Dry mouth
Blurred vision
Nausea
Drowsiness
Weakness
Nervousness
Bentyl drug summary, Prescriber’s Digital Reference (PDR)
Dicyclomine hydrochloride capsule/tablet prescribing information, DailyMed (NIH National Library of Medicine)
Dicyclomine hydrochloride injection prescribing information, DailyMed (NIH National Library of Medicine)
Dicyclomine hydrochloride solution prescribing information, NIH National Library of Medicine (2023)
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© 2025 SingleCare Administrators. All rights reserved