Doxycycline, like other tetracycline antibiotics, is bacteriostatic. It works by preventing bacteria from reproducing through the inhibition of protein synthesis. Advice for mothers using Doxycycline while breastfeeding. Includes possible effects on breastfed infants and lactation. 160 mg trimethoprim/800 mg sulfamethoxazole PO every 12 hours. The Infectious Diseases Society of America (IDSA) recommends a 3 day treatment course for acute, uncomplicated cystitis and a 14 day treatment course for pyelonephritis in female patients. Mechanism of action. P. acne initiates inflammatory acne. The bacteria is usually present in small numbers. P. acne proliferates in the lipid rich environment of the microcomedo and produces proinflammatory mediators that cause papules, pustules and cysts. Doxycycline is an antibiotic used for treating bacterial infections. The drug is also sold under the brand names Oracea, Doryx, Monodox, Periostat, and Vibramycin. Trimethoprim es un antibiótico que combate la bacteria en el cuerpo. Trimethoprim se usa para el tratamiento de la infecciones de la vejiga o los riñones, o de los oídos que causan ciertas bacteria. The only notable nonsusceptible organisms are Pseudomonas aeruginosa, the mycoplasmae and Francisella tularensis (the causative organism of tularaemia). INTRODUCTION. Streptococcus pneumoniae (pneumococcus) is among the most commonly identified bacterial causes of upper and lower respiratory tract infections including pneumonia, otitis media, acute rhinosinusitis, and acute exacerbations of chronic obstruction pulmonary disease (COPD). Fish Doxy - Doxycycline 100mg Doxycycline powder exerts a bactericidal action on gram positive and gram negative bacteria. Useful for control of some common bacterial diseases of fish including septicemia, mouth rot, and fin and tail rot. Drug Therapy in Pet Rodents Vet Med 93[11]:988-991 Nov'98 Review Article 10 Refs Valarie V. Tynes, DVM P.O. Box 510370 Punta Gorda, FL 33951.