Chlortetracycline hydrochloride (7-Chlorotetracycline hydrochloride) is an orally active, effective and selectively methanogenic bacteria inhibitor with bactericidal effects. Chlortetracycline hydrochloride is also a antibiotic that acts by inhibiting bacterial protein synthesis. Additionally, Chlortetracycline hydrochloride is a specific and potent calcium ionophore antibiotic, inhibiting binding of aminoacyl-tRNA to ribosomes[1][2][3][4].