VETERINARY ANTIPARASITE SUSPENSION INJECTION

摘要

The invention relates to a suspension injection comprising macrolide or N-phenylpyrazol insect repellents. The major dispersion medium is glycerol, propylene glycol, glycerol formal or dimethicone; the process for the preparation of active component particles is mechanical milling method or solution particle crystallization, preferred solution particle crystallization (e.g. solvent-nonsolvent method or fast temp-reducing method). The present formulation can be injected subcutaneously or intravenously for preventing and treating parasitosis in animal, it has the period of validity about 30-100 days or more after a single dosege, and the period can further be controlled by adjusting dosege of injection.