Sustamycin and tetrabid: slow-release tetracyclines.
D003692:Delayed-Action Preparations; D006801:Humans; D007408:Intestinal Absorption; D013752:Tetracycline / Q000008:administration & dosage* / Q000097:blood / Q000378:metabolism
D003692:Delayed-Action Preparations; D013752:Tetracycline