- What is vitamin D-oral, and how does it work (mechanism of action)?
- What brand names are available for vitamin D-oral?
- Is vitamin D-oral available as a generic drug?
- Do I need a prescription for vitamin D-oral?
- What are the uses for vitamin D-oral?
- What are the side effects of vitamin D-oral?
- What is the dosage for vitamin D-oral?
- Which drugs or supplements interact with vitamin D-oral?
- Is vitamin D-oral safe to take if I'm pregnant or breastfeeding?
- What else should I know about vitamin D-oral?
What is vitamin D-oral, and how does it work (mechanism of action)?
Vitamin D is a necessary vitamin for the growth and development of bones. Vitamin D is commonly known as ergocalciferol (Vitamin D2) and cholecalciferol (Vitamin D3). Vitamin D2 and D3 are broken down to their active form, calcitriol, in the body. Calcitriol works by increasing absorption of calcium and phosphorus in the body. Calcitriol also prevents loss of calcium and phosphorus from kidneys so they are absorbed back in the body to maintain sufficient levels.
What brand names are available for vitamin D-oral?
Ergocalciferol (Vitamin D2), Cholecalciferol (Vitamin D3), Cholecalciferol (Vitamin D3)
Do I need a prescription for vitamin D-oral?
Vitamin D2 and D3 50000 IU are available with a prescription. Vitamin D2 and D3 400 – 5000 IU are available over-the-counter (OTC).
What are the uses for vitamin D-oral?
What is the dosage for vitamin D-oral?
- Hypoparathyroidism: Take 25000 to 200000 IU vitamin D by mouth once daily with 4 grams of calcium lactate 6 times daily.
- Vitamin D resistant rickets: Take 12000 to 500000 IU Vitamin D by mouth once daily.
- Daily intake of vitamin D: Take 600 IU daily.
Which drugs or supplements interact with vitamin D-oral?
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.
Is vitamin D-oral safe to take if I'm pregnant or breastfeeding?
There are no adequate studies done on Vitamin D to determine safe and effective use in pregnant women.
Vitamin D enters breast milk. Therefore, it is best to be cautious before using it in nursing mothers.
What else should I know about vitamin D-oral?
What preparations of vitamin D-oral are available?
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.
How should I keep vitamin D-oral stored?
Vitamin D capsules and tablets are stored at room temperature between 15 C - 30 C (59 F - 86 F).
Quick GuidePortion Control Tips: Lose Weight and Stick to Your Diet
vitamin D (Ergocalciferol [Vitamin D2], Cholecalciferol [Vitamin D3]) is required for the maintanence for bones and teeth. It works to increase absorption of calcium and to prevent its loss through the kidneys.
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Treatment & Diagnosis
Medications & Supplements
Prevention & Wellness
- Healthful Diet & Healthy Bones
- Health Tip: Get More Vitamin D
- Vitamin D Supplements Won't Build Bone Health in Older Adults: Study
- Vitamin D No Panacea for Brain Diseases
- No Proof Vitamin D Lowers Blood Pressure in Pregnancy: Study
- Could More Vitamin D Help Prevent Breast Cancer?
- Vitamin D May Guard Against Colon Cancer
- Lower Vitamin D Levels Linked to More Belly Fat
- Vitamin D3 May Benefit Heart Surgery Patients
- Little Risk of Vitamin D Toxicity, Study Says
- Vitamin D Supplements: FAQ
- Vitamin D Levels Linked to Parkinson's Symptoms
- Vitamin D Supplements Don't Lower Blood Pressure: Study
- Vitamin D Levels Vary by Season
- Extra Vitamin D May Ease Crohn's Symptoms, Study Finds
- Vitamin D Supplements Won't Help Cholesterol Levels: Study
- Vitamin D May Thwart Kids' Winter Colds
- Low Vitamin D Levels May Raise Death Risk in Older Adults: Study
- Higher Doses of Vitamin D Prevent Fractures in Older Women
- Vitamin D Deficiency Linked to Depression
- More Insight on Possible Role of Vitamin D Against Alzheimer's
- Vitamin D May Cut Stress Fracture Risk in Girls
- Lack of Vitamin D May Harm Older Women's Health
- Vitamin D May Ease Painful Periods
- Sunny Skies Linked to Lower Stroke Risk
- Study: Vitamin D Has No Clear Benefit for COPD Patients
- Too Much Vitamin D Could Be Harmful to Heart
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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
NIH. Vitamin D.
FDA prescribing references