Trimethoprim Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • Itching

If experienced, these tend to have a Less Severe expression

  • A Skin Rash

INFREQUENT side effects


If experienced, these tend to have a Less Severe expression

  • Increased Sensitivity Of The Skin To The Sun
  • Nausea
  • Vomiting

RARE side effects


If experienced, these tend to have a Severe expression

  • A Blockage Of The Bile Duct That Resulting In High Bilirubin Levels
  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • A Skin Disorder With Blistering And Peeling Skin Called Stevens-Johnson Syndrome
  • A Skin Disorder With Blistering And Peeling Skin Called Toxic Epidermal Necrolysis
  • Decreased Blood Platelets
  • Erythema Multiforme, A Type Of Allergic Skin Reaction
  • Head Pain
  • High Levels Of Potassium In The Blood
  • Low Amount Of Sodium In The Blood
  • Low Levels Of A Type Of White Blood Cell Called Neutrophils
  • Low Levels Of White Blood Cells
  • Megaloblastic Anemia
  • Meningitis Not Due To An Infection
  • Methemoglobinemia, A Type Of Blood Disorder
  • Skin Rash With Sloughing

If experienced, these tend to have a Less Severe expression

  • A Painful, Red Or Swollen Tongue
  • Intense Abdominal Pain

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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.