Microbial infections have become increasingly difficult to treat due to the emergence of drug resistant microbes. Adjunctive therapies can be used to better treat resistant microbes, where multiple drugs are concurrently used to overcome resistant mechanisms and to synergistically treat infections. The practice of adjunctive therapies is limited by the ability to precisely control the pharmacokinetic profiles of the multiple actives. Composite particle-based approaches to enable and enhance adjunctive antimicrobial infections by simultaneous encapsulation and delivery of all components are described herein.