817
CONCLUSIONS : Sub - chronic low dose GVG potentiates and extends the inhibition of cocaine - induced increases in dopamine , effectively reducing cumulative exposures and the risk for VFDS .
 GVG, cocaine, dopamine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 GVG, cocaine, dopamine