7774
We discuss our observations in the cases of two patients with acyclovir neurotoxicity and review the findings of all previous reports in the English language literature .
 adverse effect: neurotoxicity, acyclovir
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
Answer:
 adverse effect: neurotoxicity, acyclovir