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Severe rash , including the Stevens - Johnson syndrome ( SJS ) , is the major toxicity of nevirapine and is described in the package labeling with a prominent , boxed warning .
 Severe rash, nevirapine; SJS, nevirapine; Stevens - Johnson syndrome, nevirapine
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:
 Severe rash, nevirapine; SJS, nevirapine; Stevens - Johnson syndrome, nevirapine