What can I do when it is not a medicine or treatment? For example, would it be acceptable for the EPS to refuse to provide the nutritional supplement I require as a result of my HIV/AIDS treatment?

Although it is true that nutritional supplements are not medicines and are excluded from the POS, it is considered that they are part of the treatment to which people living with HIV are entitled and, therefore, the EPS have the duty to provide them (Sentencia T-159/06).