pharmacognosy
Academic field studying medicinal drugs derived from natural sources such as plants, animals, and minerals.
彼女は大学で生薬学を専攻している。
She is majoring in pharmacognosy at university.
Compound of 生薬 (しょうやく, 'crude drug' or 'natural medicine') and 学 (がく, 'study' or 'science').