Orange Juice

Orange Juice (OJ for short) is the best combat stim in the game, giving increased damage (Muscleman Milk), damage reduction (Iron 4 Skin) and increased speed (X-plosive Runs).

It's recommended you save it for a difficult fight, if you want to get the drop on someone or if it's the end of the game, with only you and a handful of other people left.

If you find it early but lack a weapon, but see an enemy having a stronger weapon (e.g you have a Crafted Knife and the opponent has a Javelin), injecting it evens the odds and you may end up victorious, though probably heavily wounded.