Hi Welcome to Health care magic forum.
The main cause of the weight gain are the accumulation of the fat, excess intake of the calories,
avapro may not cause any weight gain,there may be little accumulation of fluids.
I advise you to consult your doctor for diagnosis, and follow the weight reduction procedures like, cutting calories, fats,in diet.
Practice
yoga, morning walk, minimise the sleeping hours, and avoid day time sleep.
Take more of green leafy vegetables, pulses, sprouts and
protein rich food,to help weight reduction.
Wising for a quick and complete recovery. Thank you.