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A 70-year - old man was admitted to our hospital because of dyspnea after taking an antihistaminic agent ( homochlorcyclizine hydrochloride ) for itching .
 dyspnea, homochlorcyclizine hydrochloride
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 dyspnea, homochlorcyclizine hydrochloride