Thanks for your question.
Ciprofloxacin and Cymbalta (duloxetine) can't cause Erectile dysfunction.
The following can cause erectile dysfunction:
ganglionic and adrenergic (beta) blockers
MAOI and tricyclic antidepressants
narcotic pain relievers
thiazide diuretics that are prescribed to control high blood pressure (and other blood pressure medications, such as calcium channel blockers)
Hope this helps.
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