Ectaprim is the brand name for a medicine made up of trimethoprim and sulfamethoxazole . It is indicated to combat a wide variety of bacterial infections, among which are:

  • Skin infections
  • Soft tissue infections
  • Eye infections
  • Digestive tract infections
  • Respiratory tract infections
  • Ear, nose and throat infections
  • Genitourinary infections

What is Ectaprim for?

Ectaprim, which is the combination of trimethoprim and sulfamethoxazole, is a broad spectrum bactericidal drug, recommended as the treatment of infections of various kinds.

Ectaprim is used to:

  • Treat urinary infections such as: pyelonephritis, cystitis, urethritis, acute and chronic prostatitis, asymptomatic bacteriuria.
  • Treat gastrointestinal infections such as: enteritis, gastroenteritis, diarrhea, shigellosis, salmonellosis, and typhoid fever.
  • Treat respiratory infections such as: otitis media, sinusitis, pharyngitis, tonsillitis, acute bronchitis and complications of chronic bronchitis.
  • Treat pneumonia caused by Pneumocystis carinii in patients with weak immune systems.
  • Treat sexually transmitted infections caused by Neisseria gonorrhoeae , Chlamydia trachomatis, and Haemophilus ducreyi .
  • Treat osteomyelitis .
  • Treat skin and soft tissue infections .

Recommended dose of Ectaprim

Ectaprim has two commercial versions: Ectaprim and Ectaprim F, of which Ectaprim F has the most of the active ingredients Trimethoprim and Sulfamethoxazole.

Ectaprim comes as tablets, each of which contains:

  • 80mg de Trimetoprima
  • 400mg de Sulfametoxazol

Ectaprim F comes as tablets, each containing:

  • 160mg de Trimetoprima
  • 800mg de Sulfametoxazol

Depending on the severity of the infection, the doctor will determine two different doses to administer:

  • 1 tablet of Ectaprim F (160mg of trimethoprim and 800mg of sulfamethoxazole) every 12 hours for strong infection.
  • 1 tablet of Ectaprim (80mg of trimethoprim and 400mg of sulfamethoxazole) every 12 hours for mild infection.

The duration of treatment will last at least five days, or until the patient shows no symptoms for at least 2 days. If there is no improvement after 7 days of therapy, there should be a reevaluation of the patient.

Ectaprim contraindications

Ectaprim is contraindicated in patients who are in the following conditions:

  • Hypersensitivity to sulfa drugs
  • Hypersensitivity to trimethoprim
  • Serious parenchymal disorders in the liver
  • Blood dyscrasias
  • Severe kidney failure
  • Secondary megaloblastic anemia
  • Folate deficiency
  • Lactating babies, under 3 months of age
  • Pregnant women, unless the benefit outweighs the risk
  • Lactating women. Products are excreted in human milk

Ectaprim side effects

Ectaprim, like any antibiotic medicine, possibly causes side and adverse effects, including:

  • Sickness
  • Vomiting
  • Rashes
  • Urticaria
  • Headache
  • Vertigo
  • Rash
  • Stevens-Johnson syndrome
  • Granulocitopenia
  • Thrombocytopenia
  • Leucopenia
  • Lyell’s syndrome
  • Local irritation and inflammation on intravenous administration

This article is for informational purposes only and is not a substitute for professional medical opinion. Consult a doctor.


Samantha Robson
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Dr. Samantha Robson ( CRN: 0510146-5) is a nutritionist and website content reviewer related to her area of ​​expertise. With a postgraduate degree in Nutrition from The University of Arizona, she is a specialist in Sports Nutrition from Oxford University and is also a member of the International Society of Sports Nutrition.

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