Oxytetracycline Hydrochloride is the hydrochloride salt form of oxytetracycline, a tetracycline derivative produced by Streptomyces rimosus exhibiting antimicrobial activity. Oxytetracycline hydrochloride interferes with binding of aminoacyl-tRNA to the mRNA-ribosome complex, thereby preventing peptide elongation and inhibiting protein synthesis. It is often used to treat skin conditions.