Ergocalciferol (Vitamin D2)

FDA Drug Information • Also known as: Ergocalciferol (Vitamin D2)

Brand Names: Ergocalciferol (Vitamin D2)
Drug Class: Provitamin D2 Compound [EPC]
Route: ORAL
Dosage Form: CAPSULE
Product Type: HUMAN PRESCRIPTION DRUG

Description

Description Section 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

What Is Ergocalciferol (Vitamin D2) Used For?

Indications and Usage Section Ergocalciferol Capsules are indicated for use in the treatment of hypoparathyroidism, refractory rickets, also known as vitamin D resistant rickets, and familial hypophosphatemia.

Dosage and Administration

Dosage and Administration Section 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.

Side Effects (Adverse Reactions)

Adverse Reactions Hypervitaminosis D is characterized by effects on the following organ system: Renal: Impairment of renal function with polyuria, nocturia, polydipsia, hypercalciuria, reversible azotemia, hypertension, nephrocalcinosis, generalized vascular calcification, or irreversible renal insufficiency which may result in death. CNS: Mental retardation. Soft Tissues: Widespread calcification of the soft tissues, including the heart, blood vessels, renal tubules, and lungs. Skeletal: Bone demineralization (osteoporosis) in adults occurs concomitantly. Decline in the average rate of linear growth and increased mineralization of bones in infants and children (dwarfism) vague aches, stiffness, and weakness. Gastrointestinal: Nausea, anorexia, constipation. Metabolic: Mild acidosis, anemia, weight loss.

Contraindications

Contraindications Ergocalciferol Capsules are contraindicated in patients with hypercalcemia, malabsorption syndrome, abnormal sensitivity to the toxic effects of vitamin D, and hypervitaminosis D.

Overdosage

Overdosage The effects of administered vitamin D can persist for two or more months after cessation of treatment. Hypervitaminosis D is characterized by: 1. Hypercalcemia with anorexia, nausea, weakness, weight loss, vague aches and stiffness, constipation, mental retardation, anemia, and mild acidosis. 2. Impairment of renal function with polyuria, nocturia, polydipsia, hypercalciuria, reversible azotemia, hypertension, nephrocalcinosis, generalized vascular calcification, or irreversible renal insufficiency which may result in death. 3. Widespread calcification of the soft tissues, including the heart, blood vessels, renal tubules, and lungs. Bone demin- eralization (osteoporosis) in adults occurs concomitantly. 4. Decline in the average rate of linear growth and increased mineralization of bones in infants and children (dwarfism). The treatment of hypervitaminosis D with hypercalcemia consists in immediate withdrawal of the vitamin, a low calcium diet, generous intake of fluids, along with symptomatic and supportive treatment. Hypercalcemic crisis with dehydration, stupor, coma, and azotemia requires more vigorous treatment. The first step should be hydration of the patient. Intravenous saline may quickly and significantly increase urinary calcium excretion. A loop diuretic (furosemide or ethacrynic acid) may be given with the saline infusion to further increase renal calcium excretion. Other reported therapeutic measures include dialysis or the administration of citrates, sulfates, phosphates, corticosteroids, EDTA (ethylenediaminetetraacetic acid), and mithramycin via appropriate regimens. With appropriate therapy, recovery is the usual outcome when no permanent damage has occurred. Deaths via renal or cardiovascular failure have been reported. The LD50 in animals is unknown. The toxic oral dose of ergocalciferol in the dog is 4 mg/kg.

How Supplied

How Supplied/Storage and Handling 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

About This Information

This drug information is sourced from FDA-approved labeling via the openFDA database. It is intended for educational and reference purposes only. This is not medical advice. Always consult your healthcare provider before making decisions about medication. Drug information may be updated by the FDA; check with your pharmacist for the most current information.

What are side effects?

Side effects are unwanted reactions that can occur when taking a medication. They range from mild (headache, nausea) to severe (allergic reactions, organ damage). Not everyone experiences side effects, and severity varies. Report any concerning side effects to your doctor.

What are drug interactions?

Drug interactions occur when a medication is affected by another drug, food, or supplement. Interactions can make medications less effective or cause dangerous side effects. Always tell your doctor about all medications and supplements you take.