Document

DailyMed Label: Ergocalciferol (Vitamin D2)

Title
DailyMed Label: Ergocalciferol (Vitamin D2)
Date
2023
Document type
DailyMed Prescription
Name
Ergocalciferol (Vitamin D2)
Generic name
Ergocalciferol (Vitamin D2)
Manufacturer
Advanced Rx Pharmacy of Tennessee, LLC
Product information
NDC: 80425-0130
Product information
NDC: 80425-0130
Product information
NDC: 80425-0130
Description
DESCRIPTION Ergocalciferol Capsules, USP is a synthetic calcium regulator for oral administration. Ergocalciferol is a white, colorless crystal, insoluble in water, soluble in organic solvents, and slightly soluble in vegetable oils. It is affected by air and by light. Ergosterol or provitamin D2 is found in plants and yeast and has no antirachitic activity. There are more than 10 substances belonging to a group of steroid compounds, classified as having vitamin D or antirachitic activity. One USP unit of vitamin D2 is equivalent to one International Unit (IU), and 1 mcg of vitamin D2 is equal to 40 IU. Each capsule contains 1.25 mg (50,000 International Units vitamin D) of ergocalciferol, USP, in an edible vegetable oil. Ergocalciferol, also called vitamin D2, is 9, 10-secoergosta-5, 7, 10(19), 22-tetraen-3-ol, (3ß, 5Z, 7E, 22E)-; (C28H44O) with a molecular weight of 396.65, and has the following structural formula: Inactive Ingredients: Butylated hydroxytoluene, D&C Yellow #10, FD&C Blue #1, Gelatin, Glycerin, Propylene Glycol, Shellac, Simethicone, Soybean oil and Titanium Dioxide. Structure
Indications
Ergocalciferol Capsules are indicated for use in the treatment of hypoparathyroidism, refractory rickets, also known as vitamin D resistant rickets, and familial hypophosphatemia.
Dosage
DOSAGE AND ADMINISTRATION THE RANGE BETWEEN THERAPEUTIC AND TOXIC DOSES IS NARROW. Vitamin D Resistant Rickets: 12,000 to 500,000 IU units daily. Hypoparathyroidism: 50,000 to 200,000 IU units daily concomitantly with calcium lactate 4 g, six times per day. DOSAGE MUST BE INDIVIDUALIZED UNDER CLOSE MEDICAL SUPERVISION. Calcium intake should be adequate. Blood calcium and phosphorus determinations must be made every 2 weeks or more frequently if necessary. X-rays of the bones should be taken every month until condition is corrected and stabilized.
Contraindications
Ergocalciferol Capsules are contraindicated in patients with hypercalcemia, malabsorption syndrome, abnormal sensitivity to the toxic effects of vitamin D, and hypervitaminosis D.
Warnings
Hypersensitivity to vitamin D may be one etiologic factor in infants with idiopathic hypercalcemia. In these cases vitamin D must be strictly restricted. Keep out of the reach of children. General Vitamin D administration from fortified foods, dietarysupplements, self-administered and prescription drug sources should be evaluated. Therapeutic dosage should be readjusted as soon as there is clinical improvement. Dosage levels must be individualized and great care exercised to prevent serious toxic effects. IN VITAMIN D RESISTANT RICKETS THE RANGE BETWEEN THERAPEUTIC AND TOXIC DOSES IS NARROW. When high therapeutic doses are used progress should be followed with frequent blood calcium determinations. In the treatment of hypoparathyroidism, intravenous calcium, parathyroid hormone, and/or dihydrotachysterol may be required. Maintenance of a normal serum phosphorus level by dietary phosphate restriction and/or administration of aluminum gels as intestinal phosphate binders in those patients with hyperphosphatemia as frequently seen in renal osteodystrophy is essential to prevent metastatic calcification. Adequate dietary calcium is necessary for clinical response to vitamin D therapy. Protect from light. Drug Interactions Mineral oil interferes with the absorption of fat-soluble vitamins,including vitamin D preparations. Administration of thiazide diuretics to hypoparathyroid patients who are concurrently being treated with Ergocalciferol Capsules may cause hypercalcemia. Carcinogenesis, Mutagenesis, Impairment of Fertility No long-term animal studies have been performed to evaluate the drug's potential in these areas. Pregnancy Pregnancy Category C Animal reproduction studies have shown fetal abnormalities in several species associated with hypervitaminosis D. These are similar to the supravalvular aortic stenosis syndrome described in infants by Black in England (1963). This syndrome was characterized by supravalvular aortic stenosis, elfin facies, and mental retardation. For the protection of the fetus, therefore, the use of vitamin D in excess of the recommended dietary allowance during normal pregnancy should be avoided unless, in the judgment of the physician, potential benefits in a specific, unique case outweigh the significant hazards involved. The safety in excess of 400 IU of vitamin D daily during pregnancy has not been established. Nursing Mothers Caution should be exercised when Ergocalciferol Capsules are administered to a nursing woman. In a mother given large doses of vitamin D, 25-hydroxycholecalciferol appeared in the milk and caused hypercalcemia in her child. Monitoring of the infant's serum calcium concentration is required in that case (Goldberg, 1972). Pediatric Use Pediatric doses must be individualized (see DOSAGE AND ADMINISTRATION). Geriatric Use Clinical studies of Ergocalciferol Capsules did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. A few published reports have suggested that the absorption of orally administered vitamin D may be attenuated in elderly compared to younger, individuals. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.
Adverse reactions
Hypervitaminosis D is characterized by effects on the following organ system:
How supplied
Capsules of 1.25 mg (50,000 IU vitamin D) of ergocalciferol, USP are clear green oval softgel capsules filled with a clear to pale yellow Bottles of 12 Capsules NDC: 80425-0130-03 Store at 20° - 25°C (68° - 77°F); excursions permitted between 15° - 30°C (59° - 86°F). [See USP Controlled Room Temperature] Protect from light and moisture. Dispense in a tight, light-resistant container as defined in the USP. Manufactured by: Humanwell PuraCap Pharmaceutical Co Ltd. Wuhan, Hubei 430206, China Distributed by: Epic Pharma, LLC Laurelton, NY 11413 PI547102018E Distributed by: Advanced Rx Pharmacy of Tennessee LLC Nashville, TN 37211 Rev. 10-2018-00
Clinical pharmacology
The in vivo synthesis of the major biologically active metabolites of vitamin D occurs in two steps. The first hydroxylation of ergocalciferol takes place in the liver (to 25-hydroxyvitamin D) and the second in the kidneys (to 1,25-dihydroxyvitamin D). Vitamin D metabolites promote the active absorption of calcium and phosphorus by the small intestine, thus elevating serum calcium and phosphate levels sufficiently to permit bone mineralization. Vitamin D metabolites also mobilize calcium and phosphate from bone and probably increase the reabsorption of calcium and perhaps also of phosphate by the renal tubules. There is a time lag of 10 to 24 hours between the administration of vitamin D and the initiation of its action in the body due to the necessity of synthesis of the active metabolites in the liver and kidneys. Parathyroid hormone is responsible for the regulation of this metabolism in the kidneys.
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