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, an SSRI used for depression and various mental disorders
- Paroxetine (Paxil), euphemistically referred to as Vitamin P, an SSRI used for depression and anxiety disorders
- Prolintane, an NDRI stimulant