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What should I discuss with my healthcare provider before taking trimethoprim (Primsol)?
You should not use trimethoprim if you are allergic to it, or if you have a certain type of anemia caused by a folate (folic acid) deficiency.
To make sure trimethoprim is safe for you, tell your doctor if you have any of these conditions:
FDA pregnancy category C. It is not known whether trimethoprim will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.
Trimethoprim can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.
Trimethoprim should not be given to a child younger than 6 months old.
How should I take trimethoprim (Primsol)?
Follow the directions on your prescription label. Do not take this medicine in larger or smaller amounts or for longer than recommended.
Take your medicine with a full glass of water.
Measure liquid medicine with a special dose-measuring spoon or cup, not a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.
Take this medicine for the full prescribed length of time. Your symptoms may improve before the infection is completely cleared. Skipping doses may also increase your risk of further infection that is resistant to antibiotics. Trimethoprim will not treat a viral infection such as the common cold or flu.
This medication can cause unusual results with certain medical tests. Tell any doctor who treats you that you are using trimethoprim.
Store at room temperature away from moisture, heat, and light.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Need help identifying pills and medications?
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