1 definition by Xavier Salvador Ramirez
The invigorating effects felt when a man has sex with a woman. The "P" in "Vitamin P" stands for "pussy". "Vitamin P" is usually used in referece to requiring sex as a matter of mental health.
When Tony catches Mario masturbating because he hasn't gotten laid in weeks, Tony looks with concern upon Mario and states, "Dude, you gotta get some Vitamin P."
by Xavier Salvador Ramirez August 5, 2006