It occasionally causes a dry throat. The medication should not be aimed towards the eyes. Theophyllines Theophyllines are available as pills and syrups. They produce relaxation of the muscles around the bronchial tubes , but cause side effects fairly commonly. For these reasons, they're used less often to treat patients with BPD in Canada.
Theophyllines have to build up a certain level in the blood, to be effective.
If the blood level is too low, the medication may not work. If the blood level is too high, serious side-effects can happen. People on theophyllines should have their blood levels checked periodically by their doctors. If your child is on Theophylline and a doctor wants to prescribe a new medication for your child, you should make sure the doctor knows that the child is taking Theophylline. Some preventer medications even decrease the number of inflammatory cells in the lungs.