COMMON BRAND NAMES. Bacter-Aid DS, Bactrim, Bactrim DS, Septra, Septra DS, Sulfatrim, Sulfatrim Pediatric, Sultrex Pediatric BACTRIM® DS Tablets and BACTRIM® Oral Suspension pronounced BACK-TRIM contains the active ingredients sulfamethoxazole and trimethoprim Consumer Medicine Information DYK that FDA regulates pet food? There is no requirement that pet food products have pre-market approval by the FDA, but FDA still ensures that the ingredients used in pet food are safe & have a function in the food itself. 5 (or 2 1/2 DS Tablets) For the lower limit dose (15 mg/kg trimethoprim and 75 mg/kg sulfamethoxazole per 24 hours) administer 75% of the dose in the above table. Disclaimer: All of the information on this website is being presented as helpful reference material but should not be considered authoritative. How to use Bactrim DS. Take this medication by mouth, as directed by your doctor, with a full glass of water (8 ounces / 240 milliliters). If stomach upset occurs, take with food or milk. Pyelonephritis: 1 DS tab or 2 regular-strength tabs PO q12hr x 14 days Prostatitis: 1 DS tab or 2 regular-strength tabs PO q12hr x 14 days or 2-3 months if chronic infection A 3 to 5 day course may be used for acute, uncomplicated cystitis Some people may wonder what the difference is between Bactrim DS vs. Bactrim. The DS stands for double strength. Bactrim DS contains exactly twice as much of the active ingredients as regular Bactrim. Adults: The usual adult dosage in the treatment of urinary tract infections is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 10 to 14 days. Bacrtrim DS (DS =Double Stength) is a tablet and the strength is 960mg Bactrim comes in a tablet and a liquid. The tablet is 480mg and the liquid is 240mg. Bactrim (sulfamethoxazole and trimethoprim) DS is a combination of two antibiotics used to treat urinary tract infections, acute otitis media, bronchitis, Shigellosis, Pneumocystis pneumonia, traveler's diarrhea, methicillin-resistant Staphylococcus aureus , and other bacterial infections susceptible to this antibiotic.