My sister was taking aluvia and tenofovir disproxil before for almost ten years now and she has been doing well. She used to take 2 tablets of aluvia in the morning and night she takes 2 aluvia with one tenofovir. Now two months ago they changed her drug to anzavir-r and tenofovir which she only takes once a day. She has turned dark in skin colour on her face and sweats alot at night. Should she continue with these drugs or stop.