A pharmaceutically active agent, a pharmaceutically active agent carrier and method of use thereof are described. In some embodiments, a system may include a composition. The composition may include one or more bridged polycyclic compounds. At least one of the bridged polycyclic compounds may include at least two cyclic groups, and at least two pharmaceutically active agents may be associated with the bridged polycyclic compound. In some embodiments, one or more bridged polycyclic compounds may be applied to an topical surface and/or an otic surface of an animal (e.g., canine, feline) such that an topical malady and/or otic malady may be inhibited and/or ameliorated.