Bactrim Ds
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Questions & Answers
Side Effects & Adverse Reactions
FATALITIES ASSOCIATED WITH THE ADMINISTRATION OF SULFONAMIDES, ALTHOUGH RARE, HAVE OCCURRED DUE TO SEVERE REACTIONS, INCLUDING STEVENS-JOHNSON SYNDROME, TOXIC EPIDERMAL NECROLYSIS, FULMINANT HEPATIC NECROSIS, AGRANULOCYTOSIS, APLASTIC ANEMIA AND OTHER BLOOD DYSCRASIAS.
SULFONAMIDES, INCLUDING SULFONAMIDE-CONTAINING PRODUCTS SUCH AS SULFAMETHOXAZOLE/TRIMETHOPRIM, SHOULD BE DISCONTINUED AT THE FIRST APPEARANCE OF SKIN RASH OR ANY SIGN OF ADVERSE REACTION. In rare instances, a skin rash may be followed by a more severe reaction, such as Stevens-Johnson syndrome, toxic epidermal necrolysis, hepatic necrosis, and serious blood disorders (see PRECAUTIONS). Clinical signs, such as rash, sore throat, fever, arthralgia, pallor, purpura or jaundice may be early indications of serious reactions.
Cough, shortness of breath, and pulmonary infiltrates are hypersensitivity reactions of the respiratory tract that have been reported in association with sulfonamide treatment.
Thrombocytopenia has been reported with both sulfamethoxazole and trimethoprim usage. A case control study found a 124-fold increased risk of severe thrombocytopenia (platelets <30,000 µL, requiring hospitalization) with sulfamethoxazole and trimethoprim in combination with an incidence of 2 cases per 1000 patient-years of exposure.6 The incidence of less severe thrombocytopenia may be higher.
Thrombocytopenia caused by sulfamethoxazole and trimethoprim may be immune-mediated. Drug-induced immune-mediated thrombocytopenia with sulfamethoxazole/trimethoprim is characterized by a drug-dependent antibody that is itself nonreactive, but when soluble drug is present at pharmacologic concentrations, antibody binds tightly to specific platelet membrane glycoproteins, causing platelet destruction.7 Serologic testing for drug-specific antibody is commercially available and may be useful for identifying the specific cause of thrombocytopenia in individual cases. Testing is important because a patient with drug-dependent antibodies should not be re-exposed to BACTRIM (see CONTRAINDICATIONS).
Typically, a patient with immune thrombocytopenia will have taken drug for about 1 week or intermittently over a longer period of time (possibly years) before presenting with petechiae or bruising. Systemic symptoms, such as lightheadedness, chills, fever, nausea, and vomiting, often may precede bleeding events. Thrombocytopenia may be severe. Patients should have risk/benefit re-evaluated in order to continue treatment with BACTRIM. If the drug is stopped, symptoms usually resolve within 1 or 2 days and platelet count returns to normal in less than 1 week. If BACTRIM is not stopped, there is a risk of fatal hemorrhage. The onset of thrombocytopenia may be more rapid upon re-exposure.
Sulfamethoxazole has also been shown to occasionally trigger the production of platelet-specific autoantibodies leading to a clinical picture indistinguishable from spontaneous autoimmune thrombocytopenia. In such cases, autoantibodies remain present for up to 9 weeks after sulfamethoxazole has been stopped, corresponding with a marked reduction in platelet counts for the same period.
The sulfonamides should not be used for treatment of group A β-hemolytic streptococcal infections. In an established infection, they will not eradicate the streptococcus and, therefore, will not prevent sequelae such as rheumatic fever.
Clostridium difficile associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents, including BACTRIM, and may range in severity from mild diarrhea to fatal colitis. Treatment with antibacterial agents alters the normal flora of the colon leading to overgrowth of C. difficile.
C. difficile produces toxins A and B which contribute to the development of CDAD. Hypertoxin producing strains of C. difficile cause increased morbidity and mortality, as these infections can be refractory to antimicrobial therapy and may require colectomy. CDAD must be considered in all patients who present with diarrhea following antibiotic use. Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents.
If CDAD is suspected or confirmed, ongoing antibiotic use not directed against C. difficile may need to be discontinued. Appropriate fluid and electrolyte management, protein supplementation, antibiotic treatment of C. difficile, and surgical evaluation should be instituted as clinically indicated.
Legal Issues
There is currently no legal information available for this drug.
FDA Safety Alerts
There are currently no FDA safety alerts available for this drug.
Manufacturer Warnings
There is currently no manufacturer warning information available for this drug.
FDA Labeling Changes
There are currently no FDA labeling changes available for this drug.
Uses
To reduce the development of drug-resistant bacteria and maintain the effectiveness of Bactrim (sulfamethoxazole and trimethoprim) tablets and other antibacterial drugs, Bactrim (sulfamethoxazole and trimethoprim) tablets should be used only to treat or prevent infections that are proven or strongly suspected to be caused by susceptible bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to empiric selection of therapy.
Urinary Tract Infections: For the treatment of urinary tract infections due to susceptible strains of the following organisms: Escherichia coli, Klebsiella species, Enterobacter species, Morganella morganii, Proteus mirabilis and Proteus vulgaris. It is recommended that initial episodes of uncomplicated urinary tract infections be treated with a single effective antibacterial agent rather than the combination.
Acute Otitis Media: For the treatment of acute otitis media in pediatric patients due to susceptible strains of Streptococcus pneumoniae or Haemophilus influenzae when in the judgment of the physician sulfamethoxazole and trimethoprim offers some advantage over the use of other antimicrobial agents. To date, there are limited data on the safety of repeated use of BACTRIM in pediatric patients under two years of age. BACTRIM is not indicated for prophylactic or prolonged administration in otitis media at any age.
Acute Exacerbations of Chronic Bronchitis in Adults: For the treatment of acute exacerbations of chronic bronchitis due to susceptible strains of Streptococcus pneumoniae or Haemophilus influenzae when in the judgment of the physician BACTRIM offers some advantage over the use of a single antimicrobial agent.
Shigellosis: For the treatment of enteritis caused by susceptible strains of Shigella flexneri and Shigella sonnei when antibacterial therapy is indicated.
Pneumocystis Carinii Pneumonia: For the treatment of documented Pneumocystis carinii pneumonia and for prophylaxis against Pneumocystis carinii pneumonia in individuals who are immunosuppressed and considered to be at an increased risk of developing Pneumocystis carinii pneumonia.
Traveler's Diarrhea in Adults: For the treatment of traveler's diarrhea due to susceptible strains of enterotoxigenic E. coli.
History
There is currently no drug history available for this drug.
Other Information
BACTRIM (sulfamethoxazole and trimethoprim) is a synthetic antibacterial combination product available in DS (double strength) tablets, each containing 800 mg sulfamethoxazole and 160 mg trimethoprim; in tablets, each containing 400 mg sulfamethoxazole and 80 mg trimethoprim for oral administration.
Sulfamethoxazole is N1-(5-methyl-3-isoxazolyl)sulfanilamide; the molecular formula is C10H11N3O3S. It is an almost white, odorless, tasteless compound with a molecular weight of 253.28 and the following structural formula:
Trimethoprim is 2,4-diamino-5-(3,4,5-trimethoxybenzyl)pyrimidine; the molecular formula is C14H18N4O3. It is a white to light yellow, odorless, bitter compound with a molecular weight of 290.3 and the following structural formula:
Inactive ingredients: Docusate sodium 85%, sodium benzoate 15%, sodium starch glycolate, magnesium stearate and pregelatinized starch.
Sources
Bactrim Ds Manufacturers
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Physicians Total Care, Inc.
![Bactrim Ds (Sulfamethoxazole And Trimethoprim) Tablet [Physicians Total Care, Inc.]](/wp-content/themes/bootstrap/assets/img/loading2.gif)
Bactrim Ds | Physicians Total Care, Inc.
Not recommended for use in pediatric patients less than 2 months of age.
Urinary Tract Infections and Shigellosis in Adults and Pediatric Patients, and Acute Otitis Media in Children:
Adults: The usual adult dosage in the treatment of urinary tract infections is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 10 to 14 days. An identical daily dosage is used for 5 days in the treatment of shigellosis.
Children: The recommended dose for children with urinary tract infections or acute otitis media is 40 mg/kg sulfamethoxazole and 8 mg/kg trimethoprim per 24 hours, given in two divided doses every 12 hours for 10 days. An identical daily dosage is used for 5 days in the treatment of shigellosis. The following table is a guideline for the attainment of this dosage:
Children 2 months of age or older: Weight Dose–every 12 hours lb kg Tablets 22 10 – 44 20 1 66 30 1½ 88 40 2 or 1 DS tabletFor Patients with Impaired Renal Function: When renal function is impaired, a reduced dosage should be employed using the following table:
Creatinine Clearance (mL/min) Recommended Dosage Regimen Above 30 Usual standard regimen 15–30 ½ the usual regimen Below 15 Use not recommended Acute Exacerbations of Chronic Bronchitis in Adults:The usual adult dosage in the treatment of acute exacerbations of chronic bronchitis is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 14 days.
Pneumocystis Carinii Pneumonia: Treatment: Adults and Children:The recommended dosage for treatment of patients with documented Pneumocystis carinii pneumonia is 75 to 100 mg/kg sulfamethoxazole and 15 to 20 mg/kg trimethoprim per 24 hours given in equally divided doses every 6 hours for 14 to 21 days.13 The following table is a guideline for the upper limit of this dosage:
Weight Dose–every 6 hours lb kg Tablets 18 8 – 35 16 1 53 24 1½ 70 32 2 or 1 DS tablet 88 40 2½ 106 48 3 or 1½ DS tablets 141 64 4 or 2 DS tablets 176 80 5 or 2½ DS tabletsFor the lower limit dose (75 mg/kg sulfamethoxazole and 15 mg/kg trimethoprim per 24 hours) administer 75% of the dose in the above table.
Prophylaxis: Adults:The recommended dosage for prophylaxis in adults is 1 BACTRIM DS (double strength) tablet daily.14
Children:For children, the recommended dose is 750 mg/m2/day sulfamethoxazole with 150 mg/m2/day trimethoprim given orally in equally divided doses twice a day, on 3 consecutive days per week. The total daily dose should not exceed 1600 mg sulfamethoxazole and 320 mg trimethoprim.15 The following table is a guideline for the attainment of this dosage in children:
Body Surface Area Dose–every 12 hours (m2) Tablets 0.26 – 0.53 ½ 1.06 1 Traveler's Diarrhea in Adults:For the treatment of traveler's diarrhea, the usual adult dosage is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 5 days.
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Ar Scientific, Inc.
Bactrim Ds | Ar Scientific, Inc.
BACTRIM is contraindicated in pediatric patients less than 2 months of age.
Urinary Tract Infections and Shigellosis in Adults and Pediatric Patients, and Acute Otitis Media in Children:
Adults: The usual adult dosage in the treatment of urinary tract infections is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 10 to 14 days. An identical daily dosage is used for 5 days in the treatment of shigellosis.
Children: The recommended dose for children with urinary tract infections or acute otitis media is 40 mg/kg sulfamethoxazole and 8 mg/kg trimethoprim per 24 hours, given in two divided doses every 12 hours for 10 days. An identical daily dosage is used for 5 days in the treatment of shigellosis. The following table is a guideline for the attainment of this dosage:
Children 2 months of age or older: Weight Dose–every 12 hours lb kg Tablets 22 10 – 44 20 1 66 30 1½ 88 40 2 or 1 DS tabletFor Patients with Impaired Renal Function: When renal function is impaired, a reduced dosage should be employed using the following table:
Creatinine
Clearance (mL/min) Recommended
Dosage Regimen Above 30 Usual standard regimen 15–30 ½ the usual regimen Below 15 Use not recommendedAcute Exacerbations of Chronic Bronchitis in Adults:
The usual adult dosage in the treatment of acute exacerbations of chronic bronchitis is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 14 days.
Pneumocystis Jiroveci Pneumonia:
Treatment: Adults and Children:
The recommended dosage for treatment of patients with documented Pneumocystis jiroveci pneumonia is 75 to 100 mg/kg sulfamethoxazole and 15 to 20 mg/kg trimethoprim per 24 hours given in equally divided doses every 6 hours for 14 to 21 days.11 The following table is a guideline for the upper limit of this dosage:
Weight Dose–every 6 hours lb kg Tablets 18 8 – 35 16 1 53 24 1½ 70 32 2 or 1 DS tablet 88 40 2½ 106 48 3 or 1½ DS tablets 141 64 4 or 2 DS tablets 176 80 5 or 2½ DS tabletsFor the lower limit dose (75 mg/kg sulfamethoxazole and 15 mg/kg trimethoprim per 24 hours) administer 75% of the dose in the above table.
Prophylaxis:
Adults:
The recommended dosage for prophylaxis in adults is 1 BACTRIM DS (double strength) tablet daily.12
Children:
For children, the recommended dose is 750 mg/m2/day sulfamethoxazole with 150 mg/m2/day trimethoprim given orally in equally divided doses twice a day, on 3 consecutive days per week. The total daily dose should not exceed 1600 mg sulfamethoxazole and 320 mg trimethoprim.13 The following table is a guideline for the attainment of this dosage in children:
Body Surface Area Dose–every 12 hours (m2) Tablets 0.26 – 0.53 ½ 1.06 1Traveler's Diarrhea in Adults:
For the treatment of traveler's diarrhea, the usual adult dosage is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 5 days.
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Caraco Pharma, Inc.
Bactrim Ds | Caraco Pharma, Inc.
BACTRIM is contraindicated in pediatric patients less than 2 months of age.
Urinary Tract Infections and Shigellosis in Adults and Pediatric Patients, and Acute Otitis Media in Children:
Adults: The usual adult dosage in the treatment of urinary tract infections is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 10 to 14 days. An identical daily dosage is used for 5 days in the treatment of shigellosis.
Children: The recommended dose for children with urinary tract infections or acute otitis media is 40 mg/kg sulfamethoxazole and 8 mg/kg trimethoprim per 24 hours, given in two divided doses every 12 hours for 10 days. An identical daily dosage is used for 5 days in the treatment of shigellosis. The following table is a guideline for the attainment of this dosage:
Children 2 months of age or older: Weight Dose–every 12 hours lb kg Tablets 22 10 – 44 20 1 66 30 1½ 88 40 2 or 1 DS tabletFor Patients with Impaired Renal Function: When renal function is impaired, a reduced dosage should be employed using the following table:
Creatinine
Clearance (mL/min) Recommended
Dosage Regimen Above 30 Usual standard regimen 15–30 ½ the usual regimen Below 15 Use not recommendedAcute Exacerbations of Chronic Bronchitis in Adults:
The usual adult dosage in the treatment of acute exacerbations of chronic bronchitis is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 14 days.
Pneumocystis Jiroveci Pneumonia:
Treatment: Adults and Children:
The recommended dosage for treatment of patients with documented Pneumocystis jiroveci pneumonia is 75 to 100 mg/kg sulfamethoxazole and 15 to 20 mg/kg trimethoprim per 24 hours given in equally divided doses every 6 hours for 14 to 21 days.11 The following table is a guideline for the upper limit of this dosage:
Weight Dose–every 6 hours lb kg Tablets 18 8 – 35 16 1 53 24 1½ 70 32 2 or 1 DS tablet 88 40 2½ 106 48 3 or 1½ DS tablets 141 64 4 or 2 DS tablets 176 80 5 or 2½ DS tabletsFor the lower limit dose (75 mg/kg sulfamethoxazole and 15 mg/kg trimethoprim per 24 hours) administer 75% of the dose in the above table.
Prophylaxis:
Adults:
The recommended dosage for prophylaxis in adults is 1 BACTRIM DS (double strength) tablet daily.12
Children:
For children, the recommended dose is 750 mg/m2/day sulfamethoxazole with 150 mg/m2/day trimethoprim given orally in equally divided doses twice a day, on 3 consecutive days per week. The total daily dose should not exceed 1600 mg sulfamethoxazole and 320 mg trimethoprim.13 The following table is a guideline for the attainment of this dosage in children:
Body Surface Area Dose–every 12 hours (m2) Tablets 0.26 – 0.53 ½ 1.06 1Traveler's Diarrhea in Adults:
For the treatment of traveler's diarrhea, the usual adult dosage is 1 BACTRIM DS (double strength) tablet or 2 BACTRIM tablets every 12 hours for 5 days.
![Bactrim Ds (Sulfamethoxazole And Trimethoprim) Tablet Bactrim (Sulfamethoxazole And Trimethoprim) Tablet [Ar Scientific, Inc.]](http://dailymed.nlm.nih.gov/dailymed/image.cfm?setid=1ba409b6-8dcd-41d2-aa9e-81b77f87ea14&name=bactrim-03.jpg)
![Bactrim Ds (Sulfamethoxazole And Trimethoprim) Tablet Bactrim (Sulfamethoxazole And Trimethoprim) Tablet [Caraco Pharma, Inc.]](http://dailymed.nlm.nih.gov/dailymed/image.cfm?setid=f59d0c04-9c66-4d53-a0e1-cb55570deb62&name=bactrim-03.jpg)
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