“…The scaling of these 1,082 drug pairs of recognized DIs, according to different dosage forms and strengths of identified drugs, generates a total of 6,087 pairs of DIs, in which, according their clinical relevance, 4,158 (68.3%) are clinical relevant (Levels 1 and 2) in HIV-infected patients receiving ARV therapy. Thus, the designed software meets the requirements defined for this type of program (Gaikwad et al, 2007;Rodríguez et al, 2009) and most important it facilitates the assessment, prediction, and decision on clinical relevance of 4,158 ARV DIs, which are considered of clinical interest in patients with HIV/AIDS (levels 1 and 2). Based on the pharmacological mechanism that explains the non-therapeutic and quantitative modification in the magnitude or duration of the drug effect, the DI may be classified as: Pharmacokinetic DI: The non-therapeutic and quantitative modification in the magnitude or duration of the drug effect is explained mainly by a change in the drug plasma concentration associate with substance or situation that causes the DI.…”