Mandrake
From Mistipedia
Mandrake is a plant. It is also a soporific, a depressant, a deliriant and a hallucinogen. It can, not without difficulty and risk, be used as a anesthetic. An overdoes can lead to a coma.
The mandrake root is known to be an important ingredient several magical potions ans salves. According to Van Richten's Guide to the Shadow Fey, it is effective at warding away the teg.[1]