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Interaction Check

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Selected Drugs Clear All

  • remove Children's Dimetapp Multi-Symptom Cold & Flu
    acetaminophen/ diphenhydramine
  • remove hydrocodone/ homatropine
    generic
  • remove Menveo
    meningococcal oligosaccharide diphtheria CRM197 conjugate vaccine (MenACWY-CRM)

multicheck MultiCheck Results - 2 Interactions

Smiley face Smiley face

Avoid/Use Alternative

Smiley face Smiley face Children's Dimetapp Multi-Symptom Cold & Flu (acetaminophen/ diphenhydramine) + hydrocodone/homatropine (generic)

Avoid/Use Alternative


diphenhydramine + hydrocodone

avoid combo if antitussive use; otherwise monitor respiratory rate, decr. dose of one or both drugs, use lowest effective doses and shortest duration of concomitant tx: combo may incr. risk of profound CNS and respiratory depression, psychomotor impairment, severe constipation/paralytic ileus, other anticholinergic adverse effects (additive effects)

Caution Advised


diphenhydramine + homatropine

caution advised: combo may incr. anticholinergic adverse effects (additive effects)

Additional Considerations

Smiley face Smiley face hydrocodone in hydrocodone/homatropine

consider prescribing an opioid overdose reversal agent, especially with concomitant CNS depressant use

benzhydrocodone (prodrug) rapidly converted to hydrocodone; similar interactions anticipated

add MAO inhibitor to Interaction Check if recent (14 days) use

avoid combo with beverages or products containing ethanol and some hydrocodone extended-release (ER) capsules; combo may incr. hydrocodone release rate, levels, risk of adverse effects, including life-threatening overdose, decr. duration of efficacy

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