Pharmaceutical compositions adapted for the parenteral administration, including intravenous administration, of triazole containing macrolide antibiotics, and methods or their use in the treatment of bacterial, protozoal, and other infections are described herein. Also described herein are solid, solution, and liquid formulations for such other therapeutic compounds that are characterized by low solubility and/or low basicity. It has been surprisingly discovered that the formulations described herein that include of one or more lactic acids, one or more amino acids, or combinations thereof, including any pharmaceutically acceptable salts of the foregoing, are useful for the parenteral delivery of such low solubility and/or low basicity therapeutic compounds.
