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Interaction Check

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Selected Drugs Clear All

  • remove Cymbalta
    duloxetine
  • remove promethazine/ dextromethorphan
    generic

multicheck MultiCheck Results - 2 Interactions

Smiley face Smiley face

Avoid/Use Alternative

Smiley face Smiley face Cymbalta (duloxetine) + promethazine/dextromethorphan (generic)

Avoid/Use Alternative


duloxetine + dextromethorphan

use alternative or monitor serotonin syndrome sx, especially during initiation/titration: combo may incr. risk of serotonin syndrome (additive effects)

duloxetine + promethazine

use alternative or monitor respiratory rate, BP; decr. dose of one or both drugs: combo may incr. risk of CNS and respiratory depression, psychomotor impairment, seizures, hypotension, including orthostasis (additive effects)

Additional Considerations

Smiley face Smiley face duloxetine in Cymbalta

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

Smiley face Smiley face dextromethorphan in promethazine/dextromethorphan

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

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