hectorol
Hectorol (Doxercalciferol) is a vitamin d2 analog used to treat Hyperparathyroidism.
Doxercalciferol · by Sanofi
Key facts
- Active ingredient
- Doxercalciferol
- Drug class
- Vitamin D2 Analog
- Form
- Capsule, Injectable
- Strength
- Doxercalciferol 2MCG/ML (2MCG/ML) · Doxercalciferol 4MCG/2ML (2MCG/ML)
- Type
- Prescription (Rx)
- Brand or generic
- Brand-name
- May treat
- hyperparathyroidism
- Manufacturer
- Sanofi
- FDA application
- NDA021027
- Availability
- Discontinued (per FDA)
Drug class
May treat (source: NIH RxClass)
Dosage forms
Capsule and Injectable
The forms currently marketed in the U.S., per the FDA National Drug Code Directory.
Ways to save
Ask for the generic
Same active ingredient, far cheaper. Is there a generic? →
Request a 90-day supply
Bulk fills usually lower the per-dose price vs monthly refills.
Use copay cards
Manufacturer copay cards & patient-assistance programs — especially for brand drugs.
Compare alternatives
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Frequently asked questions
- What does Hectorol treat?
- Hectorol (Doxercalciferol) may be used to treat hyperparathyroidism, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
- Is there a coupon or discount for Hectorol?
- pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Hectorol. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
- Who makes Hectorol?
- Hectorol is marketed by Sanofi. You can see Sanofi's full profile, rating, and other products on pharmaranks.
- Is Hectorol a brand-name or generic drug?
- Hectorol is a brand-name product with the active ingredient Doxercalciferol.
- Is Hectorol available over the counter?
- No. Hectorol is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
- What forms does Hectorol come in?
- Hectorol is currently marketed as capsule and injectable, per the FDA's National Drug Code Directory.
- What class of drug is Hectorol?
- Hectorol is classified as vitamin d2 analog, per the FDA's Established Pharmacologic Class.
- Is Hectorol FDA-registered?
- Hectorol is on record with the U.S. FDA under application number NDA021027. You can verify this on its official FDA label.
Information is sourced from public FDA regulatory data. Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.
What people report to the FDA about DOXERCALCIFEROL
The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 207 reports naming DOXERCALCIFEROL — the active ingredient in Hectorol, and the FDA flagged 71% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:
- dyspnoea20 reports
- nausea16 reports
- vomiting16 reports
- fatigue15 reports
- asthenia13 reports
- acute kidney injury12 reports
- drug hypersensitivity12 reports
- renal failure12 reports
Read these as a signal, not a rate. A report does not mean DOXERCALCIFEROL caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label.
Source: openFDA drug/event (FAERS), retrieved September 25, 2026.
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