Is 80 mcg qvar 2 inhalations twice per day considered a medium dose, not likely to cause systemic effects or high dose to step down from if possible?

Qvar medium dose: Yes, it is a medium dose, systemic side effects are unlikely with such dosage, stepping down from this dosage depends on how are you doing clinically, mainly absence of night time symptoms, exercise tolerance, and reduced asthma flares. So follow up with your doctor, and keep the current dose for now if you are stable, best wishes