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Tiagabine overdose causes an unusual array of neurological symptoms , many similar to reported adverse effects during therapeutic use .
 unusual array of neurological symptoms, Tiagabine
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:
 unusual array of neurological symptoms, Tiagabine