The abbreviation PEP stands for a number of things in medicine including post-exposure prophylaxis. ... Post-exposure prophylaxis, for example, might concern the treatment of a health care worker exposed by a needle stick to HIV with a drug such as AZT to protect them from being infected with HIV.
add liveliness or vigor to someone or something.
"measures to pep up the economy"
energy and high spirits; liveliness.
"he was an enthusiastic player, full of pep and fight"
