What occurs when drugs that are not compatible undergo a chemical change?

When drugs that are not compatible undergo a chemical change, the process typically leads to altering of pH or decomposition. This can occur when different chemical compounds interact with each other in ways that affect their chemical structure, potentially resulting in a breakdown of the original drugs. The interaction may also change the pH of the solution, impacting the stability and efficacy of the medications involved, which can pose risks to patient safety.

Chemical incompatibility can cause a variety of issues, including the formation of precipitates or toxic byproducts. Instead of creating beneficial therapeutic effects or enhancing the effectiveness of the drugs, which are suggested in other options, the primary concern is the potential for unwanted reactions that diminish the effectiveness of the drugs and may introduce harmful substances. Thus, the focus is rightly placed on the risks of pH alteration and decomposition when drugs interact incompatibly.