Is singular safe for a five year old male with repetitive sinus infections and chronic cough after a cold? Checking for enlarged adenoids.....no X-ray results yet. Has had wheezing once with congestion, and was placed on albuterol nebulizer prn. I am just not comfortable with this med when no asthma diagnosis and breathing tests normal. Only allergic to dogs, and none in home. He also takes Claritin daily.