Bactrim is one of the oldest antibiotic medications which are a mixture of two other Antibiotics namely Trimethoprim and Sulphamethoxazole. It is classified as a broad spectrum antibiotic and it is mostly prescribed for treating a host of bacterial infections. However, the medication also has got some powerful secondary medical uses like that of treating infections caused by highly sensitive organisms. Generic versions of these pills are highly effective in controlling bronchitis.

The double strength tablet of Bactrim is supposed to be a generic variant that composes of 800mg of sulfamethoxazole and 160 mg of trimethoprim. The medication upon consumption can offer relief from difficult breathing conditions that usually experienced by people with chronic bronchitis.

The medication is found to be very effective for treating middle ear infections, intestinal infections and respiratory tract infections. Bactrim can also treat certain type of pneumonia especially those that fall under pneumocystis type. The potential of this antibiotic is restricted to treat certain type of bacterial infection.

When using Bactrim, care and caution should be exercised. Never administer the pill in children below two years of age. Casual and unnecessary use of the drug makes it ineffective as many bacteria’s start developing resistance to it.

Dosage and administration

The typical Bactrim dosage that is available is the compressed tablet with the strength 400 mg/80 mg, being Trimethoprim and Sulphamethoxazole, respectively. The drug may also be taken as an oral suspension liquid, which should be administered by using the proper dose-measuring spoon or cup in the amount prescribed by the doctor.

This medication is available as oral tablet, intravenous solution, oral suspension and Bactrim double strength tablet. It is the nature of bacterial infection that determines the dosage strength for consumption. For treating urinary tract infections, the dosage would be a single double strength tablet or two ordinary tablets. It is to be given once in every 12 hours and should be continued for ten to fourteen days. For treating shigellosis, one double strength pill should be given for five consecutive days. Children can also be given the drug but at low dosage depending on the age and body weight. They should be given as per doctor’s advice and prescription.

Side Effects

The side effects associated with this drug are very limited, as Bactrim is considered to be well tolerable in all body types. The widely reported side effects are

  • Changes in skin color
  • Black and tarry stools
  • Stomach and abdominal pain
  • Chest pain
  • Dark colored urine
  • Itching
  • Skin rashes
  • Loss of appetite and
  • In rare cases people experience lower back and side pain.

Precautions and self-care tips

The safe use of Bactrim is possible by adhering to certain general precautions and self-care guidelines. They are:

  • Ensure that during the drug course you consume plenty of water to keep yourself hydrated and also to prevent kidney stones.
  • If you have to take any lab tests, inform the person that you are taking this drug as it can interfere with the tests.
  • Any sign of watery or bloody diarrhea should be reported immediately to your healthcare provider without taking any anti-diarrhea medication.
  • The drug can make your skin sensitive to the sun. Avoid going out into direct sunlight and also using tanning beds.


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