Calming Draught is a potion which helps calm emotional turmoil.
References from the canon
- Madam Pomfrey gave this to Hannah Abbott after she burst out crying in Herbology and said she was too stupid to take exams and should leave the school (OP27)
Magic Type Healing magic
draught = liquid medicine (US spelling = draft)
From the Web
"Calming Draught" from Harry Potter Wiki