Bicillin Shot Military. Web the peanut butter shot contains a high dose of bicillin, which is capable of killing various bacteria and safeguarding a person’s immune system. The “peanut butter” shot, in the military, is a slang term for the famous bicillin vaccination every recruit receives unless they have an allergy — and can.
Bicillin is another name for penicillin, and it is used to both prevent and treat bacterial infections. Boot camps had a history of group a streptococcus outbreaks, otherwise known as strep. Web the peanut butter shot is what the military calls an injection of bicillin.