At our Welness Center you be able to take advantage of HIV prevention medicines such as PrEP (pre-exposure prophylaxis. PrEP can reduce your chance of getting HIV from sex or injection drug use. When taken as prescribed, PrEP is highly effective for preventing HIV. PrEP is safe, but some people experience side effects like diarrhea, nausea, headache, fatigue, and stomach pain. These side effects usually go away over time.