BENTYL- dicyclomine hydrochloride injection, solution
A-S Medication Solutions
BENTYL® (dicyclomine hydrochloride) is indicated for the treatment of patients with functional bowel/irritable bowel syndrome.
Dosage must be adjusted to individual patient needs.
BENTYL Intramuscular Injection must be administered via intramuscular route only. Do not administer by any other route.
The recommended intramuscular dose is 10 mg to 20 mg four times a day [see Clinical Pharmacology ( 12)].
The intramuscular injection is to be used only for 1 or 2 days when the patient cannot take oral medication.
Intramuscular injection is about twice as bioavailable as oral dosage forms.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.
Aspirate the syringe before injecting to avoid intravascular injection, since thrombosis may occur if the drug is inadvertently injected intravascularly.
- BENTYL injection 20 mg/2 mL (10 mg/mL)
- unstable cardiovascular status in acute hemorrhage
- myasthenia gravis [see Warnings and Precautions ( 5.4)]
- glaucoma [see Adverse Reactions ( 6.3) and Drug Interactions ( 7.1)]
- obstructive uropathy [see Warnings and Precautions ( 5.8)]
- obstructive disease of the gastrointestinal tract [see Warnings and Precautions ( 5.5)]
- severe ulcerative colitis [see Warnings and Precautions ( 5.7)]
- reflux esophagitis
BENTYL solution is for intramuscular administration only. Do not administer by any other route. Inadvertent intravenous administration may result in thrombosis, thrombophlebitis, and injection site reactions such as pain, edema, skin color change, and reflex sympathetic dystrophy syndrome [see Adverse Reactions ( 6.2)].
Dicyclomine hydrochloride needs to be used with caution in conditions characterized by tachyarrhythmia such as thyrotoxicosis, congestive heart failure and in cardiac surgery, where they may further accelerate the heart rate. Investigate any tachycardia before administration of dicyclomine hydrochloride. Care is required in patients with coronary heart disease, as ischemia and infarction may be worsened, and in patients with hypertension [see Adverse Reactions ( 6.3)].
The peripheral effects of dicyclomine hydrochloride are a consequence of their inhibitory effect on muscarinic receptors of the autonomic nervous system. They include dryness of the mouth with difficulty in swallowing and talking, thirst, reduced bronchial secretions, dilatation of the pupils (mydriasis) with loss of accommodation (cycloplegia) and photophobia, flushing and dryness of the skin, transient bradycardia followed by tachycardia, with palpitations and arrhythmias, and difficulty in micturition, as well as reduction in the tone and motility of the gastrointestinal tract leading to constipation [see Adverse Reactions ( 6)].
In the presence of high environmental temperature heat prostration can occur with drug use (fever and heat stroke due to decreased sweating). It should also be used cautiously in patients with fever. If symptoms occur, the drug should be discontinued and supportive measures instituted. Because of the inhibitory effect on muscarinic receptors within the autonomic nervous system, caution should be taken in patients with autonomic neuropathy.
Central nervous system (CNS) signs and symptoms include confusional state, disorientation, amnesia, hallucinations, dysarthria, ataxia, coma, euphoria, fatigue, insomnia, agitation and mannerisms, and inappropriate affect.
Psychosis and delirium have been reported in sensitive individuals (such as elderly patients and/or in patients with mental illness) given anticholinergic drugs. These CNS signs and symptoms usually resolve within 12 to 24 hours after discontinuation of the drug.
BENTYL may produce drowsiness, dizziness or blurred vision. The patient should be warned not to engage in activities requiring mental alertness, such as operating a motor vehicle or other machinery or performing hazardous work while taking BENTYL.
With overdosage, a curare-like action may occur (i.e., neuromuscular blockade leading to muscular weakness and possible paralysis). It should not be given to patients with myasthenia gravis except to reduce adverse muscarinic effects of an anticholinesterase [see Contraindications ( 4)] .
Diarrhea may be an early symptom of incomplete intestinal obstruction, especially in patients with ileostomy or colostomy. In this instance, treatment with this drug would be inappropriate and possibly harmful [see Contraindications ( 4)] .
Rarely development of Ogilvie’s syndrome (colonic pseudo-obstruction) has been reported. Ogilvie’s syndrome is a clinical disorder with signs, symptoms, and radiographic appearance of an acute large bowel obstruction but with no evidence of distal colonic obstruction.
Toxic dilatation of intestine and intestinal perforation is possible when anticholinergic agents are administered in patients with Salmonella dysentery.
Caution should be taken in patients with ulcerative colitis. Large doses may suppress intestinal motility to the point of producing a paralytic ileus and the use of this drug may precipitate or aggravate the serious complication of toxic megacolon [ see Adverse Reactions ( 6.3)].BENTYL is contraindicated in patients with severe ulcerative colitis [see Contraindications ( 4)] .
BENTYL should be used with caution in patients with known or suspected prostatic enlargement, in whom prostatic enlargement may lead to urinary retention [see Adverse Reactions ( 6.3)].
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