Does Flovent make you gain weight ?

There is nothing mentioned in the list of Flovent side effects.
http://www.drugs.com/sfx/flovent-diskus-side-effects.html
http://www.drugs.com/sfx/flovent-hfa-side-effects.html

It is worth mentioning to your doctor. There may be another reason you cannot maintain your normal weight.

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There are a number of causes of unintentional weight gain including
* Alcohol use
* Certain drugs such as corticosteroids, cyproheptadine, lithium, tranquilizers, phenothiazines, some antidepressants, and medicines that increase fluid retention and cause edema
* Cushing syndrome
* Eating too much and exercising too little
* Emotional factors such as guilt, depression, and anxiety
* High-carbohydrate, high-calorie diet
* Hypothyroidism
* Polycystic ovary syndrome
* Slower metabolism, which is normal with aging
* Quitting smoking
see http://www.drugs.com/enc/weight-gain-unintentional.html