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Adjunctive Therapy:Initial: 2 tabs or 10mL qidTitrate: Reduce dose after symptoms are controlledMaint: 2 tabs or 10mL qdMax: 20mg/day diphenoxylate
D/C if symptoms not controlled after 10 days at max dose of 20mg/day (diphenoxylate)
Adjunctive Therapy:2-12 Years: Initial: 0.3-0.4mg/kg/day of sol in four divided dosesTitrate: Reduce dose after symptoms are controlledMaint: May be as low as 25% of initial dose
D/C if no improvement w/in 48 hrs
Plastic dropper should be used when measuring liquid for administration to children
(Diphenoxylate/Atropine) Sol: 2.5mg/0.025mg/5mL [60mL]; Tab: 2.5mg/0.025mg
Known hypersensitivity to diphenoxylate or atropine, obstructive jaundice, diarrhea associated w/ pseudomembranous enterocolitis or enterotoxin-producing bacteria.
Avoid in children <2 yrs. Overdosage may result in severe respiratory depression and coma, leading to brain damage or death. Avoid use with severe dehydration or electrolyte imbalance until corrective therapy is initiated. May induce toxic megacolon with acute ulcerative colitis; d/c if abdominal distention occurs or untoward symptoms develop. May cause intestinal fluid retention. Avoid with diarrhea associated with organisms that penetrate the intestinal mucosa, and with pseudomembranous enterocolitis. Extreme caution with advanced hepatorenal disease and liver dysfunction. Caution in pediatrics, especially with Down's syndrome.
Numbness of extremities, dizziness, anaphylaxis, drowsiness, toxic megacolon, N/V, urticaria, pruritus, anorexia, pancreatitis, paralytic ileus, euphoria, malaise/lethargy.
MAOIs may precipitate hypertensive crisis. (Diphenoxylate) May potentiate barbiturates, tranquilizers, and alcohol. Potential to prolong T1/2 of drugs for which the rate of elimination is dependent on the microsomal drug metabolizing enzyme system.
Category C, caution in nursing.
Diphenoxylate: Antidiarrheal. Atropine: Anticholinergic.
Absorption: (4 tabs): Cmax=163ng/mL; Tmax=2 hrs. Metabolism: Rapid and extensive metabolism through ester hydrolysis to diphenoxylic acid (major metabolite). Elimination: Urine (14%), feces (49%). T1/2=12-14 hrs (diphenoxylic acid).
Assess for hypersensitivity, obstructive jaundice, diarrhea associated with pseudomembranous enterocolitis or enterotoxin-producing bacteria, severe dehydration, electrolyte imbalance, hepatic dysfunction, hepatorenal disease, ulcerative colitis, Down's syndrome, diarrhea (caused by Escherichia coli, Salmonella, Shigella), pregnancy/nursing status, and possible drug interactions.
Monitor for severe dehydration, electrolyte imbalance, renal function, toxic megacolon in ulcerative colitis, abdominal distention, signs of atropinism, and other adverse reactions.
Instruct to take ud and not to exceed the recommended dosage. Inform of consequences of overdosage, including severe respiratory depression and coma, possibly leading to permanent brain damage or death. Instruct to exercise caution while operating machinery/driving. Advise to avoid alcohol and other CNS depressants. Advise to keep medicines out of reach of children. Inform patient that drowsiness or dizziness may occur.
Dispense liquids in original container.