"The US Food and Drug Administration (FDA) has approved calcifediol (Rayaldee, Opko Health, Inc) for the treatment of adults with secondary hyperparathyroidism (SHPT) associated with vitamin D insufficiency (serum total 25-hydroxyvitamin D "...
(ergocalciferol, USP) 50,000 IU Capsule
DRISDOL brand of 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, (3β,5Z,7E,22E)-; (C28H44O) with a molecular weight of 396.65, and has the following structural formula:
Inactive Ingredients: FD&C Blue #1, FD&C Yellow #5, Gelatin, Glycerin, Parabens, Soybean Oil.
What are the possible side effects of ergocalciferol (Calcidol, Calciferol, Drisdol, Vitamin D2)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have a serious side effect such as:
- thinking problems, changes in behavior, feeling irritable;
- urinating more than usual;
- chest pain, feeling short of breath; or
- early signs of vitamin D overdose (weakness, metallic taste in your mouth, weight loss, muscle or bone pain, constipation, nausea, and...
What are the precautions when taking ergocalciferol capsules (Drisdol)?
Before taking vitamin D, tell your doctor or pharmacist if you are allergic to it; or to other vitamin D products (such as calcitriol); or if you have any other allergies. This product may contain inactive ingredients (such as peanut/soy), which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: high calcium/vitamin D levels (hypercalcemia/hypervitaminosis D), difficulty absorbing nutrition from food (malabsorption syndrome), kidney disease, liver disease.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Last reviewed on RxList: 5/7/2009
This monograph has been modified to include the generic and brand name in many instances.
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