The ratio of propylene glycol to glycerol modulates nicotine taste and reward: more glycerol, more reward
Background Propylene glycol (PG) and glycerol (Gly) are odorless tobacco product constituents that act as solvents in electronic cigarette e-liquids and as humectants in oral nicotine products. Little is known about how PG/Gly ratio may affect nicotine’s sensory and rewarding properties. To address this gap, we utilize...