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Septra Patient Information including How Should I Take
In this Article
- What is sulfamethoxazole and trimethoprim (Septra)?
- What are the possible side effects of sulfamethoxazole and trimethoprim?
- What is the most important information I should know about sulfamethoxazole and trimethoprim?
- What should I discuss with my healthcare provider before taking sulfamethoxazole and trimethoprim?
- How should I take sulfamethoxazole and trimethoprim?
- What happens if I miss a dose?
- What happens if I overdose?
- What should I avoid while taking sulfamethoxazole and trimethoprim?
- What other drugs will affect sulfamethoxazole and trimethoprim?
- Where can I get more information?
What should I discuss with my healthcare provider before taking sulfamethoxazole and trimethoprim?
You should not use this medication if you are allergic to sulfamethoxazole or trimethoprim, if you are pregnant or breast-feeding, or if you have anemia (lack of red blood cells) caused by folic acid deficiency.
To make sure this medication is safe for you, tell your doctor if you have any of these other conditions:
- kidney or liver disease;
- a folic acid deficiency;
- asthma or severe allergies;
- a thyroid disorder;
- HIV or AIDS;
- porphyria (a genetic enzyme disorder that causes symptoms affecting the skin or nervous system);
- a glucose-6-phosphate dehydrogenase deficiency (G6PD deficiency); or
- if you are malnourished.
FDA pregnancy category C. It is not known whether sulfamethoxazole and trimethoprim will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.
Sulfamethoxazole and 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.
Do not give this medication to a child younger than 2 months old.
Older adults may be more likely to have side effects from this medicine.
How should I take sulfamethoxazole and trimethoprim?
Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.
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. Sulfamethoxazole and trimethoprim will not treat a viral infection such as the common cold or flu.
Drink plenty of fluids to prevent kidney stones while you are taking trimethoprim and sulfamethoxazole.
This medication can cause unusual results with certain medical tests. Tell any doctor who treats you that you are using sulfamethoxazole and trimethoprim.
Store at room temperature away from moisture, heat, and light.
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