Despite having no idea why His Highness the Crown Prince suddenly asked a question like this upon waking up, Dr. Feng still contemplated seriously. He thought that the description of the pills sounded a tad familiar. However, he was not proficient in the medical field and was unable to give a firm answer for fear that he would get it wrong. In the end, he summoned Dr. Xiao, the former royal doctor, into the medical room and asked for her opinion.
Only then did Zeke receive an answer to his doubt.