If you will be using NASACORT for more than a few weeks, your doctor should check your progress at regular visits.

Check with your doctor:

• if signs of a nose, sinus, or throat infection occur.
• if your symptoms do not improve within 7 days (for dexamethasone) or within 3 weeks (for beclomethasone, budesonide, flunisolide, fluticasone, mometasone, or triamcinolone).
• if your condition gets worse.

When you are being treated with dexamethasone, and after you stop treatment with it, do not have any immunizations (vaccinations) without your doctor's approval. Dexamethasone may lower your body's resistance and there is a chance you may get the infection the immunization is meant to prevent. In addition, other persons living in your household should not take or have recently taken oral polio vaccine since there is a chance they could pass the polio virus on to you. Also, avoid other persons who have taken oral polio vaccine. Don't get close to them, and do not stay in the same room with them for very long. If you cannot take these precautions, you should consider wearing a protective face mask that covers the nose and mouth.

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor as soon as possible if any of the following side effects occur:

• Less common or rare
  • Bad smell;  blindness;  bloody mucus or unexplained nosebleeds;  blurred or gradual loss of vision;  burning or stinging after use of spray or irritation inside nose (continuing);  crusting, white patches, or sores inside nose;  discharge or redness in eye, eyelid, or inner lining of the eyelid;  eye pain;  headache;  hives ;  light-headedness or dizziness;  loss of sense of taste or smell;  muscle pain;  nausea or vomiting;  ringing in the ears ;  shortness of breath;  skin rash;  sore throat, cough, or hoarseness;  stomach pains;  stuffy, dry, or runny nose or watery eyes (continuing);  swelling of eyelids, face, or lips;  tightness in chest;  troubled breathing;  unusual tiredness or weakness ;  wheezing;  white patches in throat 
  
  

• Symptoms of overdose
  • Acne;  blurred vision;  bone fractures;  excess hair growth in females;  fullness or rounding of the face, neck, and trunk;  high blood pressure;  impotence in males ;  increased urination or thirst;  lack of menstrual periods;  menstrual changes;  muscle wasting and weakness 
  
  

Other side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. However, check with your doctor if any of the following side effects continue or are bothersome:

• More common
  • Burning, dryness, or other irritation inside the nose (mild, lasting only a short time);  increase in sneezing ;  irritation of throat 
  
  

• Less common
  • Sneezing;  itching of throat 
  
  

Not all of the side effects listed above have been reported for each of these medicines, but they have been reported for at least one of them. All of the nasal corticosteroids are very similar, so any of the above side effects may occur with any of these medicines.

Other side effects not listed above may also occur in some patients. If you notice any other effects, check with your doctor.