Research shows a way thats more efficient and less expensive than traditional testingCancer,HIV and tuberculosis are among the many serious diseases that are frequently treated with combinations of three or more drugs, over months or even years. Developing the most effective therapies for such diseases requires understanding how combining drugs affects their efficacy.
whether drugs reinforce one another, and that synergy may be enough to lower the doses required,potentially relieving side effects, reducing treatment time, or improving patient quality of life. But whether drugs work against each other,efficacy will be reduced.
Source: tufts.edu