Drug Information Table

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Drug Information Table Opioids – diphenoxylate/atropine (Lomotil), loperamide (Imodium) Therapeutic Use Administration • Diarrhea • Diphenoxylate/atropine • Reduction of volume of ◦ Give orally. ileostomy effluent (loperamide/ ◦ Give 20 mg /day in 5 mg atropine) doses. ◦ Continue for 24 to 36 hr to determine its efficacy. ◦ Be aware that excessive doses of diphenoxylate can cause CNS effects similar to morphine, but atropine in high doses causes unpleasant effects that discourage abuse; treat overdoses with naloxone. • Loperamide ◦ Give orally ◦ Give an initial dose of 4 mg; follow each loose stool with additional 2 mg, but do not exceed 16 mg/day. ◦ Stop loperamide after 48 hr if diarrhea persists. ◦ Be aware that loperamide is an analog of the opioid meperidine, but it is not a controlled substance and even at high doses does not cause opioid effects or dependence. Side/Adverse Effects Interventions Patient Instructions • Sedation, dizziness, • Monitor patients when • Do not take prior to driving lightheadedness, drowsiness ambulating. or activities requiring mental (diphenoxylate/atropine) • Recommend the lowest alertness. effective dose for the shortest • Sit or lie down if feeling period of time. lightheaded. • Change positions gradually. • Anticholinergic effects (dry • Monitor for anticholinergic • Suck on hard candy or chew mouth, urinary retention effects. gum. • Monitor urinary elimination • Sip water. patterns, especially in older • Urinate every 4 hr and report adults. any undesirable changes in urinary elimination. • Tell patients with diarrhea to avoid fluid and electrolyte imbalances by drinking clear liquids or a commercial oral electrolyte solution, and to avoid caffeine because it increases gastrointestinal motility. Contraindications Precautions Interactions • Children younger than 2 yr • Ulcerative colitis • Other CNS depressants • Inflammatory bowel disease • Renal or liver dysfunction increase CNS depression • Advanced hepatic disease • History of chemical abuse (diphenoxylate/atropine). • Glaucoma • Prostatic hypertrophy • Monoamine oxidase • Severe fluid and electrolyte inhibitors increase the imbalance risk for hypertensive crisis • Pseudomembranous (diphenoxylate/atropine). enterocolitis • Diarrhea due to poisoning • Ileus • Gastrointestinal bleeding.

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