Apart from providing HIV patients with ART, medical personnel at the facility also educate patients with HIV prevention messages.
Some patients admitted to the facility test HIV positive while receiving treatment, as Zomba Mental Hospital ART clerk Misheck Matoga explains.
"First these patients receive treatment and therapy for their mental health disorder. After they have stabilised, there is a lengthy dialogue with them before we conduct testing and counseling on treatment," he said.
Matonga added that compulsory testing is against patients' human rights.
Apart from Zomba Mental Hospital in the old capital, Bwaila in the capital Lilongwe is the only other institution that treats mental health, but on a smaller scale.