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Compound sulfamethoxazole granules

Function and Efficacy

1. This product is a compound preparation of sulfadiazine (SD) and trimethoprim (TMP). The combination of the two has a synergistic antibacterial effect. It has good antibacterial activity against non-enzyme-producing Staphylococcus aureus, Streptococcus pyogenes, Streptococcus pneumoniae, Escherichia coli, Klebsiella, Salmonella, Proteus, Morganella, Shigella and other Enterobacteriaceae, Neisseria gonorrhoeae, Neisseria meningitidis, and Haemophilus influenzae. 2. It also has antimicrobial activity against Chlamydia trachomatis, Nocardia asteroides, Plasmodium and Toxoplasma in vitro. In recent years, bacterial resistance to this product is common, especially bacteria of the Enterobacteriaceae family such as Shigella, so it is rarely used clinically. 3. The mechanism of action of this product is that sulfonamides act on dihydrofolate synthetase, interfering with the first step of folic acid synthesis, while trimethoprim acts on the second step of folic acid anabolism, selectively inhibiting the action of dihydrofolate reductase. Therefore, the combination of the two can doubly block the folic acid metabolism of bacteria, have a synergistic antibacterial effect, and reduce the number of drug-resistant strains compared with a single drug.

Ingredients

This product is a compound preparation, and its components are: each bag contains the main ingredients sulfamethoxazole 0.8g and trimethoprim 0.16g.

Name Description Content CAS NO. Manufacturer
SulfamethoxazoleIngredients

It acts on dihydrofolate synthase, interfering with the first step of folic acid synthesis; combined with trimethoprim, it can double block the bacterial folic acid metabolism and have a synergistic antibacterial effect.

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723-46-6 33
TrimethoprimIngredients

It acts on the second step of folic acid anabolism and selectively inhibits the action of dihydrofolate reductase. When used in combination with sulfamethoxazole, it can double-block the folic acid metabolism of bacteria and has a synergistic antibacterial effect.

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738-70-5 44

Appearance

This product is white or off-white granules.

Indication

1. For the treatment of urinary tract infections caused by sensitive strains of Escherichia coli, Klebsiella, Enterobacter, Proteus mirabilis, Proteus vulgaris and Morganella; 2. For the treatment of acute otitis media in children over 2 years old caused by Streptococcus pneumoniae or Haemophilus influenzae; 3. For the treatment of acute exacerbation of chronic bronchitis in adults caused by Streptococcus pneumoniae or Haemophilus influenzae; 4. For the treatment of intestinal infections and Shigella infections caused by sensitive strains of Shigella flexneri or Shigella sonnei; 5. For the treatment of Pneumocystis carinii pneumonia, this product is the first choice; 6. For the prevention of Pneumocystis carinii pneumonia, existing Pneumocystis carinii can be used

Usage and Dosage

Oral administration. 1. Adults: for the treatment of bacterial infections, take 1 bag at a time, twice a day or as directed by a doctor. 2. Children: (1) For the treatment of bacterial infections, infants aged 2 months and under 40 kg should take sulfamethoxazole 20-30 mg/kg and trimethoprim 4-6 mg/kg orally once every 12 hours; children weighing more than 40 kg should take the same dose as adults. (2) For the treatment of parasitic infections such as Pneumocystis carinii pneumonia, take sulfamethoxazole 18.75-25 mg/kg and trimethoprim 3.75-5 mg/kg orally once every 6 hours. When used to treat infectious diseases, the treatment should be based on the course of treatment for different diseases.

Adverse Reactions

1. Allergic reactions are relatively common and may manifest as drug eruptions. In severe cases, exudative erythema multiforme, exfoliative dermatitis, and bullous epidermolysis atrophic dermatitis may occur; there are also serum sickness-like reactions such as photosensitivity reactions, drug fever, joint and muscle pain, and fever. Anaphylactic shock is occasionally seen. 2. Neutropenia or deficiency, thrombocytopenia, and aplastic anemia. Patients may present with sore throat, fever, pallor, and bleeding tendency. 3. Hemolytic anemia and hemoglobinuria. This is prone to occur in patients who lack glucose-6-phosphate dehydrogenase after using sulfonamides, and is more common in newborns and children than in adults. 4. Hyperbilirubinemia and neonatal kernicterus. Because this product competes with bilirubin for protein binding sites, it can cause an increase in free bilirubin. Newborns have imperfect liver function and are sensitive to bilirubin.

Precautions

1. This product is contraindicated for use in children under 2 months old; 2. This product is contraindicated for use in patients who are allergic to SMZ and TMP; 3. This product is contraindicated for use in patients with megaloblastic anemia because it blocks the metabolism of folic acid and aggravates folate deficiency; 4. This product should be used with caution in pregnant women.

Special Population Medication

Precautions for children: This product is contraindicated for children under 2 months old. Precautions for pregnancy and lactation: Use with caution for pregnant women. Precautions for the elderly: Elderly patients have an increased chance of serious adverse reactions when using sulfonamides. Severe rash, bone marrow suppression, and thrombocytopenia are common serious adverse reactions in the elderly. Therefore, elderly patients should avoid using this product. If there is an indication, the decision should be made after weighing the pros and cons.

Drug Interactions

1. When used in combination with urine alkalinizing drugs, the solubility of sulfonamides in alkaline urine can be increased, resulting in increased excretion. 2. Para-aminobenzoic acid can replace sulfonamides and be taken up by bacteria, antagonizing the antibacterial effect of sulfonamides, so the two should not be used together. It is also not suitable for use in combination with local anesthetics containing para-aminobenzoyl such as procaine, benzocaine, tetracaine, etc. 3. When used in combination with oral anticoagulants, oral hypoglycemic drugs, methotrexate, phenytoin sodium and thiopental sodium, the dosage of the above drugs needs to be adjusted, because the sulfadiazine in this product can replace the protein binding sites of these drugs, or inhibit their metabolism, resulting in prolonged drug action or toxic reactions. Therefore, when these drugs are used simultaneously with this product, or when used after the application of this product, their dosages need to be adjusted. 4. When bone marrow suppressive drugs are used in combination with this product, they may enhance the effects of such drugs on the formation of

Storage

Keep away from light and store in sealed container.

Packaging Specification

Sulfadimethoxazole 0.8g, trimethoprim 0.16g

Validity Period

24 months

Manufacturer

Furen Pharmaceutical Group Co., Ltd.

  • Founded in:

    1997-01-22
  • Address:

    No. 1 Tongyuan Road, Luyi County Industrial Cluster Area
  • Tax NO.:

    9141000017569469XJ
  • Registered Funds:

    400 million yuan
  • Email:

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