Can symbicort 400 mg make u dependent on drug or you can come off it and it wont effect your lungs?does it do long term damage as i only use it for allergies dust mites as it feels tight in airways when i stop taking it i fell tight again in chest.

Some basics: The value of inhaled steroids is it targets the drug action on the very lung tissues which need it without leaving muck to enter the blood. It does not have the same dependency issues as oral steroid pills. If you truly feel tight when off the med you likely have mild asthma & this keeps it in control. Many mild forms called cough variant asthma are never definitively labeled.