Skip to main content

Hectorol (Injection)

Generic name: Doxercalciferol Injection (doks er kal si fe FEER ole)
Brand name: Hectorol
Drug class: Vitamins

Medically reviewed by Last updated on Nov 25, 2020.

Uses of Hectorol:

  • It is used to treat high parathyroid hormone levels in certain patients.

What do I need to tell my doctor BEFORE I take Hectorol?

  • If you have an allergy to doxercalciferol or any other part of Hectorol (doxercalciferol injection).
  • If you are allergic to Hectorol (doxercalciferol injection); any part of Hectorol (doxercalciferol injection); or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
  • If you have any of these health problems: High calcium levels, high phosphate levels, or high vitamin D levels.
  • If you are taking any drugs that have magnesium in them.

This is not a list of all drugs or health problems that interact with Hectorol (doxercalciferol injection).

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Hectorol (doxercalciferol injection) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Hectorol?

  • Tell all of your health care providers that you take Hectorol (doxercalciferol injection). This includes your doctors, nurses, pharmacists, and dentists.
  • Have blood work checked as you have been told by the doctor. Talk with the doctor.
  • If you are taking other sources of vitamin D, talk with your doctor.
  • Follow the diet plan that your doctor told you about.
  • Talk with your doctor about whether you may need to take calcium while taking Hectorol (doxercalciferol injection).
  • Very bad and sometimes deadly allergic side effects have rarely happened. Talk with your doctor.
  • Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using Hectorol (doxercalciferol injection) while you are pregnant.
  • Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.

How is this medicine (Hectorol) best taken?

Use Hectorol (doxercalciferol injection) as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • It is given as a shot into a vein.

What do I do if I miss a dose?

  • Call your doctor to find out what to do.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Signs of high calcium levels like weakness, confusion, feeling tired, headache, upset stomach and throwing up, constipation, or bone pain.
  • Signs of dehydration like dry skin, mouth, or eyes; thirst; fast heartbeat; dizziness; fast breathing; or confusion.
  • Very bad dizziness or passing out.
  • Chest pain or pressure.
  • Shortness of breath.
  • More thirst.
  • Passing urine more often.
  • A heartbeat that does not feel normal.
  • Not hungry.
  • Weight loss.
  • Seizures.
  • Slow heartbeat.
  • Swelling.
  • Fever or chills.
  • A burning, numbness, or tingling feeling that is not normal.
  • Muscle stiffness.
  • Low mood (depression).

What are some other side effects of Hectorol?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Dizziness.
  • Joint pain.
  • Weight gain.
  • Runny nose.
  • Cough.
  • Not able to sleep.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at

If OVERDOSE is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Hectorol?

  • If you need to store Hectorol (doxercalciferol injection) at home, talk with your doctor, nurse, or pharmacist about how to store it.

Consumer information use

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Hectorol (doxercalciferol injection), please talk with your doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.