Possible Side Effects1

Like all medicines, Prolia® (denosumab) can cause side effects, although not everybody gets them.
Uncommonly, patients receiving Prolia® may develop skin infections (predominantly cellulitis). Please tell your doctor immediately if you develop any of these symptoms while being on treatment with Prolia®: swollen, red area of skin, most commonly in the lower leg, that feels hot and tender, and possibly with symptoms of fever.
Rarely, patients receiving Prolia® may develop pain in the mouth and/or jaw, swelling or non-healing of sores in the mouth or jaw, discharge, numbness or a feeling of heaviness in the jaw, or loosening of a tooth. These could be signs of bone damage in the jaw (osteonecrosis). Tell your doctor and dentist immediately if you experience such symptoms while being treated with Prolia® or after stopping treatment.
Rarely, patients receiving Prolia® may have low calcium levels in the blood (hypocalcaemia). Symptoms include spasms, twitches or cramps in your muscles, and/or numbness or tingling in your fingers, toes or around your mouth and/or seizures, confusion, or loss of consciousness. If any of these apply to you, tell your doctor immediately. Low calcium in the blood may also lead to a change in heart rhythm called QT prolongation which is seen by electrocardiogram (ECG).
Rarely unusual fractures of the thigh bone may occur in patients receiving Prolia®. Contact your doctor if you experience new or unusual pain in your hip, groin or thigh as this may be an early indication of a possible fracture of the thigh bone.
Rarely, allergic reactions may occur in patients receiving Prolia®. Symptoms include swelling of the face, lips, tongue, throat or other parts of the body; rash, itching or hives on the skin, wheezing or difficulty breathing. Please tell your doctor if you develop any of these symptoms while being treated with Prolia®.

Very Common side effects (may affect more than 1 in 10 people):

  • Bone, joint, and/or muscle pain which is sometimes severe
  • Arm or leg pain (pain in extremity)

Common side effects (may affect up to 1 in 10 people):

  • Painful urination, frequent urination, blood in the urine, inability to hold your urine
  • Upper respiratory tract infection
  • Pain, tingling or numbness that moves down your leg (sciatica)
  • Constipation
  • Abdominal discomfort
  • Rash
  • Skin condition with itching, redness and/or dryness (eczema)
  • Hair loss (alopecia)

Uncommon side effects (may affect up to 1 in 100 people):

  • Fever, vomiting and abdominal pain or discomfort (diverticulitis)
  • Ear infection
  • Rash that may occur on the skin or sores in the mouth (lichenoid drug eruptions)

Very rare side effects (may affect up to 1 in 10000 people):

  • allergic reaction that can damage blood vessels mainly in the skin (e.g., purple or brownish-red spots, hives or skin sores) (hypersensitivity vasculitis).

Not Known (frequency cannot be estimated from the available data):

Ear pain, discharge from the ear and/or an ear infection could be signs of bone damage in the ear so please consult your doctor.
For a list of side effects please see the Patient Information Leaflet (PIL).

Reporting of side effects:

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the package leaflet. Side effects can be reported directly to the Health Products Regulatory Authority (HPRA) using the available methods via www.hpra.ie. By reporting side effects you can help provide more information on the safety of this medicine. Side effects should also be reported to Amgen Limited on +44 (0) 1223 436441 or Freephone 1800 535 160.


  1. Prolia® (denosumab) Patient Information Leaflet

This site is intended for patients in Ireland who are being treated with an Amgen® product and for Irish Healthcare Professionals (HCPs).

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IE-CBU-0820-00002 August 2020