@forrestfire15_Out of curiosity, if someone drinks a potion of a buff spell that requires Concentration, do they have to concentrate on it? yes – IIRC you treat the person who drinks the potion as if they cast the spell
— Mike Mearls (@mikemearls) February 3, 2015
Sage Advice: Potions are described in Dungeon Master’s Guide p.139, at p.140 there’s a variant rules for drink more than one potions at time.
