GENERIC NAME: vitamin D
BRAND NAME: Ergocalciferol (Vitamin D2), Cholecalciferol (Vitamin D3), Cholecalciferol (Vitamin D3)
DISCONTINUED BRAND: Drisdol (Vitamin D2)
PRESCRIPTION: Vitamin D2 and D3 50000 IU are available with a prescription. Vitamin D2 and D3 400 – 5000 IU are available over-the-counter (OTC).
GENERIC AVAILABLE: Yes
SIDE EFFECTS: Side effects of Vitamin D include:
- weight loss,
- weakness, and
- increased calcium levels (hypercalcemia).
PREPARATIONS: Vitamin D2 and D3 are available in 400, 800, 1000, 2000, 2400, and 5000 international units (IU) tablets and capsules. Vitamin D2 is available in 50000 IU (1.25 mg) softgels. Vitamin D3 is available in 50000 IU capsules.
DRUG INTERACTIONS: Vitamin D should be used with caution with mineral oil because mineral oil slows down the absorption of Vitamin D and reduces its therapeutic benefits.
Thiazide diuretics like hydrochlorothiazide (Microzide) and chlorthalidone (Thalitone) should be used with caution in people with hypoparathyroid taking Vitamin D, because thiamine diuretics may increase calcium levels.
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