EXDENSUR can cause serious side effects, including:

• allergic (hypersensitivity) reactions, including anaphylaxis. Serious allergic reactions can happen after you get your EXDENSUR injection. Contact your healthcare provider or get emergency help right away if you have any of the following symptoms of an allergic reaction:
  • swelling of your face, mouth, and tongue
  • breathing problems
  • fainting, dizziness, feeling lightheaded (low blood pressure)
  • rash
  • hives

Before using EXDENSUR, tell your healthcare provider about all of your medical conditions, including if you:

• are taking systemic or inhaled corticosteroid medicines. Do not change or stop taking your corticosteroid medicines unless instructed by your healthcare provider because this may cause other symptoms to come back.
• have a parasitic (helminth) infection.
• are pregnant or plan to become pregnant. Babies exposed to EXDENSUR before birth may have higher and longer-lasting levels of the medicine in their bodies. It is not known if EXDENSUR may harm your unborn baby. If you become pregnant while taking EXDENSUR, call 1-888-825-5249.
• are breastfeeding or plan to breastfeed. You and your healthcare provider should decide if you will use EXDENSUR and breastfeed. You should not do both without talking with your healthcare provider first.
• are taking prescription and over-the-counter medicines, vitamins, and herbal supplements. Do not change or stop taking your other medicines unless instructed by your healthcare provider.

The most common side effects of EXDENSUR include: upper respiratory tract infection (common cold, sinus infection), sneezing, nasal congestion, runny nose and nasal itching (allergic rhinitis), flu or flu-like symptoms, joint pain, and sore throat (pharyngitis).