<prompt> Which one of the following statements about doxycycline is FALSE?It is bacteriostaticIt is excreted mainly in the fecesIt is more active than tetracycline against H.pyloriIt is used in Lymes disease  <response>: Ref: KDT 6e p637, 710, 712, 713 Doxycycline is a bacteriostatic agent that acts by inhibiting protein synthesis. It is safe in renal failure as it is excreted mainly in feces. Doxycycline is useful in Lymes disease. Tetracycline and not doxycycline is useful in H.pylori therapy. 