I am taking dulera, (formoterol and mometasone) if i get a yeast infection in my mouth or throat, can it be cured?

Very much so: Unfortunately inhaled steroids can lead to local immune dysfunction, particularly predisposing persons to thrush(oral yeast infections), that's why you have to be good about rinsing out your mouth of use of Dulera (formoterol and mometasone). But associated yeast infections can be treated with various troches(clotrimazole), liquids(nystatin) and oral antifungals(fluconazole) if necessary.

Prevention: You may need a topical antifungal to rid you of the yeast infection. Be sure to gargle after each Dulera (formoterol and mometasone) treatment. Sometimes using an Aerochamber may reduce the amount of inhaled steroid to the throat area. Whenever possible, try to use the minimum dose of steroid under your doctor's supervision.