4218
Long - term intragastric application of the antiepileptic drug sodium valproate ( Vupral " Polfa " ) at the effective dose of 200 mg / kg b .
 sodium valproate
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 sodium valproate