methscopolamine bromide

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.

DOSAGE AND ADMINISTRATION The average dosage of Methscopolamine Bromide Tablets, USP 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. If neither symptomatic relief nor side effects appear, the daily dosage may be increased. Some patients have tolerated 30 mg daily with no unpleasant reactions. Patients whose dosage has been reduced to eliminate or modify side effects often continue to show adequate response both subjectively in relief of symptoms and objectively as measured by antisecretory effects. The ultimate aim of therapy is to arrive at a dosage which provides maximal clinical effectiveness with a minimum of unpleasant side effects. Many patients report no side effects on a dosage which gives complete relief of symptoms. On the other hand, some patients have reported severe side effects without appreciable symptomatic relief. Such patients must be considered unsuited for this therapy. Usually they have been or will prove to be similarly intolerant to other anticholinergic drugs. If methscopolamine bromide is to be used in a patient who gives a history of such intolerance, it should be started at a low dosage.

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, USP 2.5 mg and 5 mg, are contraindicated in patients who are hypersensitive to methscopolamine bromide or related drugs.

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. Dermatologic : Decreased sweating, urticaria and other dermal manifestations. Miscellaneous : Xerostomia, weakness, insomnia, impotence, suppression of lactation.

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.

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. The chemical name for methscopolamine bromide is 3-Oxa-9-azoniatricyclo [3.3.1.0 2,4 ]nonane, 7-(3-hydroxy-1-oxo-2-phenylpropoxy)-9, 9-dimethyl-, bromide, [7(s)-(1α, 2β, 4β, 5α, 7β)]- and the molecular weight is 398.30. The structural formula is represented below: Methscopolamine Bromide Tablets, USP 2.5 mg for oral administration contain 2.5 mg of methscopolamine bromide USP. Methscopolamine Bromide Tablets, USP 5 mg for oral administration contain 5 mg of methscopolamine bromide USP. Inactive ingredients: microcrystalline cellulose NF, pregelatinized starch NF, colloidal silicon dioxide NF, magnesium stearate NF. Contains no lactose. FDA approved impurity specifications differs from the USP. methscopolamine-structure

OVERDOSAGE The symptoms of overdosage with Methscopolamine Bromide Tablets, USP 2.5 mg and 5 mg progress from intensification of the usual side effects to CNS disturbances (from restlessness and excitement to psychotic behavior), circulatory changes (flushing, fall in blood pressure, circulatory failure), respiratory failure, paralysis, and coma. Measures to be taken are (1) induction of emesis and (2) injection of physostigmine 0.5 to 2 mg intravenously, and repeated as necessary up to a total of 5 mg. Fever may be treated symptomatically (alcohol sponging, ice packs). Excitement of a degree which demands attention may be managed with sodium thiopental 2% solution given slowly intravenously or chloral hydrate (100 to 200 mL of a 2% solution) by rectal infusion. In the event of progression of the curare-like effect to paralysis of the respiratory muscles, artificial respiration should be instituted and maintained until effective respiratory action returns. The oral LD 50 in rats is 1,352 to 2,617 mg/kg. No data is available on the dialyzability of methscopolamine bromide.

HOW SUPPLIED Methscopolamine Bromide Tablets, USP 2.5 mg are available as white to off-white, round shaped biconvex tablets debossed "S15" on one side of the tablet and plain on the other side, in the following package size: Bottles of 100 (NDC 72319-029-04) Bottles of 1000 (NDC 72319-029-06) Methscopolamine Bromide Tablets, USP 5 mg are available as white to off-white, oval shaped biconvex tablets, debossed "S16" on one side of the tablet and plain on the other side, in the following package size: Bottles of 60 (NDC 72319-030-02) Bottles of 1000 (NDC 72319-030-06) Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature]. Dispense in a tight, light- resistant container. KEEP THIS AND ALL MEDICATIONS OUT OF THE REACH OF CHILDREN.