Charlie Sheen has been open about his HIV diagnosis, including how the medication to keep the deadly virus in check brutally impacted his body, RadarOnline.com can reveal.

The former troubled actor was diagnosed with HIV in 2011 after having sex with thousands of people, but he did not go public until four years later. Article continues below advertisement

Sheen's 'Dementia' Scare Tap Here To Add Radar Online as A Trusted Source

During an awareness event in Hollywood for PRO 140, an injectable therapy for HIV patients, the Two and a Half Men alum confessed had had been taking four pills daily as part of his "cocktail" of drugs; however, as a result, he suffered from serious side effects.

"[The drugs] kept me suppressed and alive,” Sheen said at the event. "But I struggle

See Full Page