It is not stated in the game. However, it allows you to enter the tournament with 0 health, so I presume that it doesnt
Health Kit is a loot so you can only get it by doing jobs or fights.
jobs and fights
you can have as many items as you desire. the number of mafia does not affect how many items you may have but the number of mafia helps you in fights and robbing. the more mafia, the stronger you get in fights.
You can get rubles in mafia wars by doing jobs, job assists and fights in Moscow.
get stuff and click attack
By mastering jobs and winning fights.
"Bodyguard - Choose a member with many fights won to promote to Bodyguard to get a Defense bonus. Your Bodyguard gains a small chance to always win fights when they are attacked. "~Win as many fights as possible and ask your friends to add you to their Top Mafia as a Bodyguard.
if you are fighting stronger mafia, use boosts, they will help you win fights even with stronger mafias.
Vegas loots are randomly dropped on games and fights in other cities in mafia wars.
randomly in the jobs and fights
4, as of 6-30-09.
All jobs/fights have a chance to drop it