<prompt> All of the following statements about adverse effects of tetracyclines are true, except:May lead to discolouration of teethAre a common cause of superinfectionsMay precipitate Liver damageAre not known to be teratogenic  <response>: Tetracyclines are known to have teratogenic effects. Consumption of Tetracycline during pregnancy may cause dental enamel dysplasia and bony deformities in the child. Ref: KDT, 6th Edition, Page 714; Basic and Clinical Pharmacology By Katzung, 10th Edition, Page 748 