Jack finds a small bottle of vodka in his pocket upon regaining consciousness in the pilot episode
Jack's father was an alcoholic, and met both Sawyer and Ana-Lucia in bars.
Ana-Lucia and Jack's father were both drunks in Australia.
Libby was shot by Michael in the Hatch because she went there to get wine for her picnic with Hurley
Alcohol and Lost actors
Michelle Rodriguez and Cynthia Watros were both arrested of alcohol-related offenses on December 1, 2005 and subsequently convicted. The characters played by both actresses were killed by Michael in the episode Two for the Road, which episode featured Ana-Lucia's character saying "I can't do this anymore" and (in a flashback) drinking heavily, as well as Libby being killed because she was in the wrong place at the wrong time for the purpose of obtaining alcohol.