Possible side effects

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); severely low blood calcium levels may lead to hospitalisation and may even be life-threatening. 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®.
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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 10,000 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 possible side effects please see the Patient Information Leaflet (PIL).

References:

  1. Prolia® (denosumab) Patient Information Leaflet