Bactrim Oral

Bactrim Oral Side Effects

Nausea, vomiting, diarrhea, loss of appetite, or headache may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur:

• muscle weakness
• mental/mood changes
• new lump/growth in the neck (goiter)
• signs of low blood sugar (e.g., shaking, dizziness, blurred vision, unusual hunger)

Tell your doctor immediately if any of these highly unlikely but very serious side effects occur:

• change in the amount of urine
• blood in the urine

Seek immediate medical attention if any of these highly unlikely but very serious side effects occur:

• neck stiffness
• seizures
• persistent headache
• confusion

This medication may rarely cause serious (possibly fatal) allergic reactions and other side effects such as a severe peeling skin rash (e.g., Stevens-Johnson syndrome), blood disorders (e.g., agranulocytosis, aplastic anemia), liver damage, or lung injury. If you notice any of the following, seek immediate medical attention:

• skin rash/blisters
• itching/swelling (especially of the face/tongue/throat)
• persistent sore throat or fever
• paleness
• joint pain/aches
• persistent cough
• trouble breathing
• easy bleeding/bruising
• yellowing eyes or skin
• persistent nausea/vomiting
• unusual fatigue
• dark urine

This medication may rarely cause a severe intestinal condition (pseudomembranous colitis) due to a type of resistant bacteria. This condition may occur during treatment or weeks to months after treatment has stopped. Do not use anti-diarrhea products or narcotic pain medications if you have any of the following symptoms because these products may make them worse. Tell your doctor immediately if you develop: