20229
The results showed that coadministration of HQT at 0 . 5h before VPA significantly decreased the AUC0 - t and Cmax by 62 % and 77 % , respectively , whereas coadministration of HQT at 1 . 5h after VPA exerted no significant influence .
 VPA, VPA
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 VPA, VPA