Vitamin P may refer to:

Flavonoids, referred to as vitamin P from the mid-1930s to early 1950s Fluoxetine (Prozac), euphemistically referred to as vitamin P, a selective serotonin reuptake inhibitor used for depression and various mental disorders Paroxetine (Paxil), euphemistically referred to as vitamin P, a selective serotonin reuptake inhibitor used for depression and anxiety disorders Prolintane, euphemistically referred to as vitamin P, a norepinephrine-dopamine reuptake inhibitor stimulant