VITAMIN D
Generic: ergocalciferol
- Manufacturer
- Sanofi
- NDC
- 51655-774
- RxCUI
- 1367410
- Route
- ORAL
- ICD-10 indication
- E83.31
Affordability Check
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About VITAMIN D
What is this medication? Prescription vitamin D is a high-potency supplement used to treat and prevent significant vitamin D deficiency in the body. While lower doses are available over the counter, the prescription version is typically used when a patient's levels are severely low or when they have underlying health conditions that require clinical intervention. This medication helps the body absorb calcium and phosphorus from food, which are critical components for building and maintaining strong bones. It is often used to treat conditions such as rickets, osteomalacia, or disorders of the parathyroid gland. In addition to treating direct deficiencies, this medication is frequently used to manage osteoporosis by supporting bone density and reducing the risk of falls and fractures. It also plays a role in regulating immune function and maintaining muscle health. Because prescription vitamin D provides a concentrated dose, it is usually taken less frequently, such as once a week, and requires monitoring by a healthcare provider. Patients must follow the specific dosing schedule provided by their doctor to ensure that blood levels remain within a safe and effective range.
Copay & patient assistance
Detailed copay and financial assistance information is not publicly available for this medication at this time. Please consult your pharmacist or the manufacturer's official patient support program for more details.
External links go directly to the manufacturer's portal. RxCopays does not receive compensation for referrals.
Compare pricing elsewhere
RxCopays doesn't sell drugs or take referral fees. Here are the transparent-pricing directories we recommend checking alongside your insurance formulary.
Cost Plus Drug Company
Mark Cuban's transparent-pricing pharmacy — manufacturer cost + 15% markup + $5 dispensing fee. No insurance needed. Search alphabetically for ergocalciferol.
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GoodRx
Compare local pharmacy prices with GoodRx coupons. Use the price with your insurance or without — whichever is cheaper.
Lookup VITAMIN D →
NeedyMeds
Independent nonprofit directory of patient assistance programs, copay cards, and charity co-pay foundations.
Search for ergocalciferol →
RxAssist
PAP directory maintained by Volunteers in Health Care at Brown University. Free, no ads.
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Prescribing information
From the FDA-approved label for VITAMIN D. Official source: DailyMed (NLM) · Label effective Jan 1, 2026
Indications and usage
Dosage and administration
Contraindications
Warnings
Drug interactions
Adverse reactions
Label text is reproduced as-is from the FDA-approved label. We do not paraphrase, summarize, or omit. Content above is for informational purposes only and is not medical advice. Always consult your prescribing clinician or pharmacist before making decisions about your medication.
Conditions we've indexed resources for
Click a condition to see copay cards, grants, and PA rules specific to it. For the full list of FDA-approved indications, see Prescribing information above.
Prior authorization & coverage
| Payer | PA | Step therapy | Copay tier |
|---|---|---|---|
— Medicare Part D | — | — | — |
— Medicare Part D | — | — | — |
Related drugs
Ergocalciferol Capsules,
Same generic · ergocalciferol
Ergocalciferol (Vitamin D2)
Same generic · ergocalciferol
ERGOCALCIFEROL
Same generic · ergocalciferol
Potassium Phosphate
Treats same condition · Leucine, Phenylalanine, Lysine, Methionine, Isoleucine, Valine, Histidine, Threonine, Tryptophan, Alanine, Glycine, Arginine, Proline, Serine, Tyrosine, Sodium Acetate, Dibasic Potassium Phosphate, Magnesium Chloride, Sodium Chloride, Calcium Chloride, Dextrose
NATPARA (parathyroid hormone)
Treats same condition · PARATHYROID HORMONE
Yorvipath
Treats same condition · Palopegteriparatide
Sevelamer Hydrochloride
Treats same condition · Sevelamer Hydrochloride
STRENSIQ
Treats same condition · ASFOTASE ALFA
Sevelamer Carbonate
Treats same condition · SEVELAMER CARBONATE
POTASSIUM PHOSPHATES
Treats same condition · Potassium Phosphate, Monobasic Potassium Phosphate, Dibasic
How this page is sourced
- Drug identity verified against openFDA NDC Directory.
- Label text (when shown) originates from NLM DailyMed.
- Copay and assistance URLs verified periodically; if you hit a broken link, tell us.