Please confirm that you are not located inside the Russian Federation
The link you have selected will take you to a third-party website. We do not control or have responsibility for the content of any third-party site.
Enter search terms to find related medical topics, multimedia and more.
Drug
Common Uses
Some Potential Side Effects
Trimethoprim*
Trimethoprim/sulfamethoxazole (TMP/SMX)
Infections caused by susceptible bacteria that are resistant to other antibiotics, including methicillin-resistant Staphylococcus aureus ( MRSA Methicillin-resistant Staphylococcus aureus (MRSA) Staphylococcus aureus is the most dangerous of all of the many common staphylococcal bacteria. These gram-positive, sphere-shaped (coccal) bacteria (see figure ) often cause skin infections... read more )
Chronic infection of the prostate ( prostatitis Prostatitis Prostatitis is pain and swelling, inflammation, or both of the prostate gland. The cause is sometimes a bacterial infection. Pain can occur in the area between the scrotum and anus or in the... read more )
Bladder infections in women
Prevention of recurring urinary tract infections (UTIs) Overview of Urinary Tract Infections (UTIs) In healthy people, urine in the bladder is sterile—no bacteria or other infectious organisms are present. The tube that carries urine from the bladder out of the body (urethra) contains no bacteria... read more in women Overview of Urinary Tract Infections (UTIs) In healthy people, urine in the bladder is sterile—no bacteria or other infectious organisms are present. The tube that carries urine from the bladder out of the body (urethra) contains no bacteria... read more and children Treatment A urinary tract infection is a bacterial infection of the urinary bladder ( cystitis), the kidneys ( pyelonephritis), or both. Urinary tract infections are caused by bacteria. Infants and young... read more
Intestinal infections due to various bacteria, such as Escherichia coli Escherichia coli Infections Escherichia coli (E. coli) are a group of gram-negative bacteria that normally reside in the intestine of healthy people, but some strains can cause infection in the digestive... read more (E. coli)
Treatment and prevention of pneumonia due to Pneumocystis jirovecii Causes (a fungus)
Trimethoprim alone: Chronic prostatitis Prostatitis Prostatitis is pain and swelling, inflammation, or both of the prostate gland. The cause is sometimes a bacterial infection. Pain can occur in the area between the scrotum and anus or in the... read more and prevention and treatment of urinary tract infections in people who are allergic to sulfonamides
Nausea, vomiting, and diarrhea
Allergic reactions Allergies to Drugs People sometimes mistake many adverse drug reactions for allergies. For example, people who experience stomach discomfort after taking aspirin (a common adverse reaction) often say they are... read more (including rashes)
Crystals in urine (rare)
A decrease in white blood cell and platelet counts
Sensitivity to sunlight
Possibly increased tendency to bleed if used with warfarin
Kidney failure in people who have kidneys that are not functioning well
* Trimethoprim has side effects similar to those of sulfamethoxazole, but they are less common.