Overview
DESCRIPTION Methscopolamine Bromide Tablets, USP 2.5 mg and 5 mg contain methscopolamine bromide USP, an anticholinergic, which occurs as white crystals, or as a white odorless crystalline powder. Methscopolamine bromide melts at about 225°C with decomposition. The drug is freely soluble in water, slightly soluble in alcohol, and insoluble in acetone and in chloroform.
Mechanism of Action
CLINICAL PHARMACOLOGY Methscopolamine bromide is an anticholinergic agent which possesses most of the pharmacologic actions of that drug class. These include reduction in volume and total acid content of gastric secretion, inhibition of gastrointestinal motility, inhibition of salivary excretion, dilation of the pupil and inhibition of accommodation with resulting blurring of vision. Large doses may result in tachycardia.
Indications
- INDICATIONS AND USAGE Adjunctive therapy for the treatment of peptic ulcer. METHSCOPOLAMINE BROMIDE HAS NOT BEEN SHOWN TO BE EFFECTIVE IN CONTRIBUTING TO THE HEALING OF PEPTIC ULCER, DECREASING THE RATE OF RECURRENCE OR PREVENTING COMPLICATIONS.
Common Doses
- 2.5 mg
- 5 mg
- 12.5 mg
- 20 mg
Dosage
DOSAGE AND ADMINISTRATION The average dosage of Methscopolamine Bromide Tablets is 2.5 mg one-half hour before meals and 2.5 to 5 mg at bedtime. A starting dose of 12.5 mg daily will be clinically effective in most patients without the production of appreciable side effects. If the patient is experiencing symptoms such as severe abdominal pain or cramping which demand prompt relief, the drug may be started on a daily dosage of 20 mg, administered in doses of 5 mg one- half hour before meals and at bedtime. If very unpleasant side effects develop promptly, the daily dosage should be reduced.
Contraindications
- CONTRAINDICATIONS Glaucoma; obstructive uropathy (e.g., bladder neck obstruction due to prostatic hypertrophy); obstructive disease of the gastrointestinal tract (e.g., pyloroduodenal stenosis); paralytic ileus; intestinal atony of the elderly or debilitated patient; unstable cardiovascular status in acute hemorrhage; severe ulcerative colitis; toxic megacolon complicating ulcerative colitis; myasthenia gravis. Methscopolamine Bromide Tablets, 2.5 mg and 5 mg is contraindicated in patients who are hypersensitive to methscopolamine bromide or related drugs.
Side Effects
- ADVERSE REACTIONS The following adverse reactions have been observed, but there is not enough data to support an estimate of frequency. Cardiovascular : Tachycardia, palpitation. Allergic : Severe allergic reaction or drug idiosyncrasies including anaphylaxis. CNS : Headaches, nervousness, mental confusion, drowsiness, dizziness. Special Senses : Blurred vision, dilation of the pupil, cycloplegia, increased ocular tension, loss of taste. Renal : Urinary hesitancy and retention. Gastrointestinal : Nausea, vomiting, constipation, bloated feeling.
Interactions
- 4. Drug interactions Additive anticholinergic effects may result from concomitant use with antipsychotics, tricyclic antidepressants, and other drugs with anticholinergic effects. Concomitant administration with antacids may interfere with the absorption of methscopolamine bromide.