Bactrim is a good choice for the above causes of prostatitis because it gets good penetration to the prostate. However, it is primarily used for outpatient treatment, and your doctor may choose a different drug if you require hospitalization. Additionally, local patterns of bacterial resistance to antibiotics will alter your doctor’s choice. How is Bactrim DS usually good for? I got it prescriped 2 years ago - Answered by a verified Health Professional I got it prescriped 2 years ago - Answered by a verified Health Professional We use cookies to give you the best possible experience on our website. In this article we'll be looking at the effectiveness of Bactrim (also available in double strength, known as Bactrim DS), an oral antibiotic, in treating a sinus infection. Bactrim DS are both antibiotics that treat different types of infection caused by bacteria. Bactrim DS is used a combination antibiotic used to treat ear infections, urinary tract infections, bronchitis, traveler's diarrhea, shigellosis, and Pneumocystis jiroveci pneumonia. Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. Commonly Used Brand Name(s) Bactrim, Bactrim DS, Septra, Septra DS, SMZ-TMP Pediatric, Sulfatrim, Sulfatrim Pediatric, Apo-Sulfatrim, Novo-Trimel, Nu-Cotrimox, Septa Pediatric, Septra Pediatric Suspension Bactrim (sulfamethoxazole and trimethoprim) invariable has shelf life of at least a year, and likely is perfectly good for at least couple of years & does not require refrigeration. Doctors give trusted answers on uses, effects, side-effects, and cautions: Dr. Handsfield on shelf life of bactrim ds: Usually printed. 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. Find information about which conditions Bactrim DS Oral is commonly used to treat.