FERADA
Back to Products800 mg/3 ml
| Form | Solution for injection |
|---|---|
| Active Substance | Phenyramidol |
| Presentation | 3 ampules 3 ml |
| Treatment Category | Musculoskeletal system |
About the Product
COMPOSITION
1 tablet contains:
Active substance: folic acid 400 mcg.
INDICATIONS FOR USE
·treatment and prevention of folic acid deficiency associated with unbalanced and inadequate nutrition;
·treatment and prevention of folic acid deficiency anemia as part of combination therapy (macrocytic hyperchromic anemia, anemia and leukopenia caused by medicinal products and ionizing radiation, megaloblastic anemia, post-resection anemia, and anemias associated with diseases of the small intestine, sprue, and malabsorption syndrome);
·treatment and prevention of anemia during pregnancy and lactation;
·prevention of fetal neural tube defects during the first trimester of pregnancy;
· long-term treatment with folic acid antagonists (methotrexate, sulfamethoxazole/trimethoprim combination) and anticonvulsants (phenytoin, primidone, phenobarbital).
DOSAGE AND ADMINISTRATION
Folfa should be taken orally after meals.
For the prevention of folic acid deficiency, adults and children over 14 years of age should take 400 mcg daily. The recommended daily requirement for folic acid is:
- 200–300 mcg for children 4–13 years of age;
- 150 mcg for children 1–3 years of age;
- 65–85 mcg for infants under 1 year of age.
During pregnancy, 400–800 mcg daily is recommended for the prevention of anemia and fetal neural tube defects; during lactation, 400 mcg daily is recommended.
For therapeutic purposes, adults are prescribed up to 5 mg daily for 20–30 days. In children, the dose depends on age. The daily dose and duration of treatment should be determined individually by the physician according to the severity of the disease.
DOSAGE FORM
Tablets No. 30
PHARMACOLOGICAL PROPERTIES
Pharmacodynamics
Folic acid (vitamin Bc, vitamin B9) belongs to the B-group vitamins. It is synthesized by the intestinal microflora and is essential for normal hematopoiesis, including the maturation of megaloblasts and their transformation into normoblasts. In the body, folic acid is reduced to tetrahydrofolic acid, a coenzyme involved in various metabolic processes. It stimulates erythropoiesis and participates in the synthesis of amino acids (including glycine and methionine), nucleic acids, purines, pyrimidines, as well as in the metabolism of choline and histidine.
Pharmacokinetics
Following oral administration, folic acid is well and completely absorbed from the gastrointestinal tract, mainly in the upper part of the duodenum. It is almost completely bound to plasma proteins. It is stored and metabolized in the liver by the enzyme dihydrofolate reductase, forming tetrahydrofolic acid. Maximum plasma concentration is reached within 30–60 minutes. It crosses the blood–brain barrier and the placental barrier and is excreted into breast milk. It is eliminated by the kidneys both unchanged (when the administered dose significantly exceeds the daily requirement) and as metabolites. It is removed by hemodialysis.
CONTRAINDICATIONS
·hypersensitivity to the components of the medicinal product;
· malignant neoplasms.
ADVERSE REACTIONS
Allergic reactions: skin rash, pruritus, bronchospasm, erythema, hyperthermia.
Gastrointestinal disorders: nausea, abdominal bloating, bitter taste in the mouth, anorexia.
Other: prolonged use may result in vitamin B₁₂ deficiency (hypovitaminosis).
DRUG INTERACTIONS
The absorption of folic acid is reduced when administered concomitantly with analgesics, anticonvulsants, antacids, sulfonamides, antibiotics, and cytotoxic agents.
Folic acid increases the metabolism of phenytoin.
Reduced or altered absorption of folic acid may occur when administered concomitantly with cholestyramine. Therefore, the medicinal product should be taken 1 hour before or 4–6 hours after the administration of cholestyramine.
SPECIAL PRECAUTIONS
The medicinal product should be used with caution in patients with anemia of unknown etiology, as folic acid may mask the hematological manifestations of pernicious anemia, thereby interfering with its diagnosis. In patients with pernicious anemia, the medicinal product should be used only in combination with cyanocobalamin.
Long-term administration of folic acid, especially at high doses, is not recommended because of the risk of reducing blood cyanocobalamin concentrations.
Patients undergoing hemodialysis require increased amounts of folic acid.
It should be taken into account that antibiotics may interfere with microbiological assays of folic acid concentrations in plasma and erythrocytes, resulting in falsely low values.