Sulfamethoxazole-trimethoprim (co-trimoxazole)
کوتریموکسازول (سولفامتوکسازول/تریمتوپریم)
🦠 Antiinfectives For Systemic UseSulfonamide + dihydrofolate reductase inhibitor
Market / country: 🇺🇸 USA
Bactrim (US) · Septra (US)
🧮 Dose calculator
Urinary tract infection · Regimen source: FDA TMP-SMX susp · Dosage and Administration
- • Dose is calculated and shown as the trimethoprim component. FDA TMP-SMX susp · Dosage and Administration
Enter age and weight.
🛡️ Safety & information
Contraindications
- ⛔ Known hypersensitivity to trimethoprim or sulfonamides. FDA TMP-SMX susp · Contraindications
- ⛔ Pediatric patients less than 2 months of age. FDA TMP-SMX susp · Contraindications
- ⛔ History of drug-induced immune thrombocytopenia, folate-deficiency megaloblastic anemia, marked hepatic damage, severe renal insufficiency without monitoring, concomitant dofetilide. FDA TMP-SMX susp · Contraindications
Renal adjustment
- • eGFR < 30: CrCl 15–30 mL/min: half the usual regimen. FDA TMP-SMX susp · Dosage and Administration
- • eGFR < 15: CrCl below 15 mL/min: use not recommended. FDA TMP-SMX susp · Dosage and Administration
Formulations
- TMP 40 mg + SMX 200 mg / 5 mL — suspension 🇺🇸 USA FDA TMP-SMX susp · How Supplied
👥 Special populations
- 🤰 PregnancyUse with caution
Label states no clear risk or has limited data; use only if needed, under medical advice. FDA TMP-SMX susp · PREGNANCY
“Because sulfamethoxazole and trimethoprim may interfere with folic acid metabolism, sulfamethoxazole and trimethoprim should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.”
- 🤱 BreastfeedingUse with caution
Label: use with caution while breastfeeding; see the label text. FDA TMP-SMX susp · NURSING MOTHERS
“Caution should be exercised when sulfamethoxazole and trimethoprim is administered to a nursing woman, especially when breastfeeding, jaundiced, ill, stressed, or premature infants because of the potential risk of bilirubin displacement and kernicterus.”
- 👶 ChildrenContraindicated
Label: contraindicated in children below a stated age. FDA TMP-SMX susp · CONTRAINDICATIONS
“… ombocytopenia with use of trimethoprim and/or sulfonamides • documented megaloblastic anemia due to folate deficiency • pediatric patients less than 2 months of age • marked hepatic damage • severe renal insufficiency when renal function status cannot be monitored • concomitant administration with dofetilide (see …”
- 👴 Older adultsUse with caution
Label: use with caution in older adults, usually starting at the low end of the dose range. FDA TMP-SMX susp · GERIATRIC USE
“There may be an increased risk of severe adverse reactions in elderly patients, particularly when complicating conditions exist, e.g., impaired kidney and/or liver function, possible folate deficiency, or concomitant use of other drugs.”
- ⚥ Females & males of reproductive potentialNo data
The source for this drug has no section for this group.
🔗 Reference links
- FDA (approval record)ANDA214330
- DailyMed (FDA label)FDA TMP-SMX susp
- MedlinePlus (NIH)Co-trimoxazoleCo-trimoxazole Injection
- WHO ATC/DDDJ01EE01
- Darooyab (Iran)Co-trimoxazole
🇮🇷 Registered in Iran Darooyab · G-375/Co-trimoxazole
Dosage forms with Iranian generic codes, per Darooyab.
- 00342 · CO TRIMOXAZOLE 100/20MG TAB · قرص کو تریمتوپریم / سولفامتوکسازول ۱۰۰ / ۲۰ میلیگرم
- 00340 · CO TRIMOXAZOLE 200/40 MG/5ML 100ML SUSP · سوسپانسیون کو تریمتوپریم / سولفامتوکسازول ۲۰۰ / ۴۰ میلیگرم / ۵ میلیلیتر ۱۰۰ میلیلیتر
- 00339 · CO TRIMOXAZOLE 400/80 MG TAB · قرص کو تریمتوپریم / سولفامتوکسازول ۴۰۰ / ۸۰ میلیگرم
- 00341 · CO TRIMOXAZOLE 400/80 MG/5ML AMP · آمپول کو تریمتوپریم / سولفامتوکسازول ۴۰۰ / ۸۰ میلیگرم / ۵ میلیلیتر
- 05526 · CO TRIMOXAZOLE 800/160 MG TAB · قرص کو تریمتوپریم / سولفامتوکسازول ۸۰۰ / ۱۶۰ میلیگرم
📚 Reference status for this drug
Shows which sources have references recorded for this drug and which do not.
- FDA label (DailyMed)✅ PresentFDA TMP-SMX susp · How SuppliedFDA TMP-SMX susp · Dosage and AdministrationFDA TMP-SMX susp · Indications and UsageFDA TMP-SMX susp · ContraindicationsFDA TMP-SMX susp · PREGNANCYFDA TMP-SMX susp · NURSING MOTHERSFDA TMP-SMX susp · CONTRAINDICATIONSFDA TMP-SMX susp · GERIATRIC USEFDA TMP-SMX susp · SPL approval / marketing category
- UK SmPC (eMC / MHRA)❌ Not present
- Published guideline❌ Not present
- Licensed reference (medical school)❌ Not present
- Iranian leaflet (IFDA)❌ Not present
- Pharmacy website (secondary, unreliable)✅ PresentDarooyab · G-375/Co-trimoxazole
- Clinical review⚠ Unverified