1212
Reserpine injection ( one dose of 1 mg / kg s . c . ) every other day for 3 days caused a significant increase in vacuous chewing , tongue protrusion and duration of facial twitching , compared to the control .
 Reserpine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Reserpine