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Controlled clinical trials have provided frequency information for reported adverse effects of dicyclomine hydrochloride listed in a decreasing order of frequency.

Not all of the following adverse reactions have been reported with dicyclomine hydrochloride. Adverse reactions are included here that have been reported for pharmacologically similar drugs with anticholinergic/antispasmodic action.

Bentyl Gastrointestinal side effects: dry mouth, nausea, vomiting, constipation, bloated feeling, abdominal pain, taste loss, anorexia

Bentyl Central Nervous System side effects: dizziness, light-headedness, tingling, headache, drowsiness, weakness, nervousness, numbness, mental confusion and/or excitement (especially in elderly persons), dyskinesia, lethargy, syncope, speech disturbance, insomnia

Bentyl Ophthalmologic side effects: blurred vision, diplopia, mydriasis, cycloplegia, increased ocular tension

Bentyl Dermatologic/Allergic side effects: rash, urticaria, itching, and other dermal manifestations; severe allergic reaction or drug idiosyncrasies including anaphylaxis

Bentyl Genitourinary side effects: urinary hesitancy, urinary retention

Bentyl Cardiovascular side effects: tachycardia, palpitations

Bentyl Respiratory side effects: dyspnea, apnea, asphyxia

Bentyl Other side effects: decreased sweating, nasal stuffiness or congestion, sneezing, throat congestion, impotence, suppression of lactation

With the injectable form, there may be temporary sensation of light-headedness. Some local irritation and focal coagulation necrosis may occur following the I.M. injection of the drug.

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Side effects of Bentyl
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Bentyl:

Blurred vision; constipation; decreased sweating; difficulty sleeping; dizziness; drowsiness; dry mouth; headache; lightheadedness; loss of taste; nausea; nervousness.

Seek medical attention right away if any of these SEVERE side effects occur when using Bentyl:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); agitation; confusion; diarrhea; difficulty focusing your eyes; difficulty moving; difficulty speaking; difficulty urinating; disorientation; exaggerated sense of well-being; fainting; hallucinations; pounding in the chest; rapid heartbeat; short-term memory loss; unusual weakness; vomiting.

Side effects of Bentyl Capsules
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Bentyl Capsules:

Blurred vision; constipation; decreased sweating; difficulty sleeping; dizziness; drowsiness; dry mouth; headache; lightheadedness; loss of taste; nausea; nervousness.

Seek medical attention right away if any of these SEVERE side effects occur when using Bentyl Capsules:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); agitation; confusion; diarrhea; difficulty focusing your eyes; difficulty moving; difficulty speaking; difficulty urinating; disorientation; exaggerated sense of well-being; fainting; hallucinations; pounding in the chest, rapid heartbeat; short-term memory loss; unusual weakness; vomiting.

Side effects of Bentyl Syrup
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome when using Bentyl Syrup:

Blurred vision; constipation; decreased sweating; difficulty sleeping; dizziness; drowsiness; dry mouth; headache; lightheadedness; loss of taste; nausea; nervousness.

Seek medical attention right away if any of these SEVERE side effects occur when using Bentyl Syrup:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); agitation; confusion; diarrhea; difficulty focusing your eyes; difficulty moving; difficulty speaking; difficulty urinating; disorientation; exaggerated sense of well-being; fainting; hallucinations; pounding in the chest; rapid heartbeat; short-term memory loss; unusual weakness; vomiting.

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Any medication taken in excess can have serious consequences. If you suspect an overdose, seek medical attention immediately.

* Symptoms of a Bentyl overdose include:
Blurred vision, difficulty in swallowing, dilated pupils, dizziness, dryness of the mouth, headache, hot, dry skin, nausea, nerve blockage causing weakness and possible paralysis, vomiting

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BENTYL ADULTS RECOMMENDED DOSAGE

The usual dosage is 160 milligrams per day divided into 4 equal doses. Since this dose is associated with a significant incidence of side effects, your doctor may recommend a starting dose of 80 milligrams per day divided into 4 equal doses. If no side effects appear, the doctor will then increase the dose.

If Bentyl is not effective within 2 weeks or side effects require doses below 80 milligrams per day, your doctor may discontinue it.

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The effects of Bentyl during pregnancy have not been adequately studied. If you are pregnant or plan to become pregnant, notify your doctor. Bentyl does appear in breast milk and could affect a nursing infant. Do not use it when breastfeeding.

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If Bentyl is taken with certain other drugs, the effects of either could be increased, decreased, or altered. It is especially important to check with your doctor before combining Bentyl with the following:

Airway-opening drugs such as albuterol sulfate
Amantadine
Antacids
Antiarrhythmics such as quinidine
Antiglaucoma drugs such as pilocarpine hydrochloride
Antihistamines such as clemastine fumarate
Benzodiazepines (tranquilizers) such as alprazolam and diazepam
Corticosteroids such as prednisone
Digoxin
Major tranquilizers such as chlorpromazine and thioridazine hydrochloride
MAO inhibitors (antidepressants such as phenelzine sulfate and tranylcypromine sulfate)
Metoclopramide
Narcotic analgesics (pain relievers such as meperidine hydrochloride)
Nitrates and nitrites (heart medications such as nitroglycerin)
Tricyclic antidepressant drugs such as amitriptyline hydrochloride and imipramine hydrochloride

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Bentyl may produce drowsiness or blurred vision. Therefore, driving a car, operating machinery, or participating in any activity that requires full mental alertness is not recommended.

Diarrhea may be an early symptom of a partial intestinal blockage, especially in people who have had bowel removals and an ileostomy or colostomy. If this occurs, notify your doctor immediately.

You should use Bentyl with caution if you have autonomic neuropathy (a nerve disorder); liver or kidney disease; hyperthyroidism; high blood pressure; coronary heart disease; congestive heart failure; rapid, irregular heartbeat; hiatal hernia (protrusion of part of the stomach through the diaphragm); or enlargement of the prostate gland.

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If you are sensitive to or have ever had an allergic reaction to Bentyl, you should not take Bentyl. Make sure your doctor is aware of any drug reactions you have experienced.

Unless you are directed to do so by your doctor, do not take Bentyl if you have a blockage of the urinary tract, stomach, or intestines; severe ulcerative colitis (inflammatory disease of the large intestine); reflux esophagitis (inflammation of the esophagus usually caused by the backflow of acid stomach contents); glaucoma; or myasthenia gravis (a disease characterized by long-lasting fatigue and muscle weakness).

This drug should not be given to infants less than 6 months of age or used by women who are nursing an infant.

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Side effects cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking Bentyl.

* Bentyl side effects may include:
Blurred vision, dizziness, drowsiness, dry mouth, light-headedness, nausea, nervousness, weakness

* Not all of the following side effects have been reported with dicyclomine hydrochloride, but they have been reported for similar drugs with antispasmodic action; contact your doctor if they occur.
Abdominal pain, bloated feeling, constipation, decreased sweating, difficulty in urinating, double vision, enlargement of the pupil of the eye, eye paralysis, fainting, headache, hives, impotence, inability to urinate, increased pressure in the eyes, itching, labored, difficult breathing, lack of coordination, lack or loss of appetite, nasal stuffiness or congestion, numbness, rapid heartbeat, rash, severe allergic reaction, sluggishness, sneezing, suffocation, suppression of breast milk, taste loss, temporary cessation of breathing, throat congestion, tingling, vomiting

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Take Bentyl exactly as prescribed.

* If you miss a dose of Bentyl…
Take it as soon as you remember. If it is almost time for your next dose, skip the one you missed and go back to your regular schedule. Do not take 2 doses at once.

* Bentyl storage instructions…
Store at room temperature. Keep tablets out of direct sunlight. Keep syrup away from excessive heat.

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