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The fits ceased within 4 hours of administering intramuscular pyridoxine , suggesting an aetiology of pyridoxine deficiency secondary to isoniazid medication .
 fits, pyridoxine, pyridoxine, isoniazid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 fits, pyridoxine, pyridoxine, isoniazid