In medical terms, especially in the emergency room, slang for lithium.

Similar to Vitamin H (Haloperidol, an antipsychotic) and Vitamin V (Valium).
"That guy who they just brought in is really manic. He's waving his dick all over the place. He needs some vitamin L pretty bad."
by talia_nurse January 24, 2008
Top Definition
LSD of course! Absorbs 47 times it's weight in excess reality!
Work was a bitch, I'm definately gonna need my vitamin L this weekend!
by Brian Dolge April 12, 2006
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×