After using my inhailers, proventil I get the shakes, weird feeling in my head its been nearly 2 hrs and the shakes have decreased to very little, a little jab once but doesn't feel like angina. Support to use it 4-6 x's a day. Have only used it once today and once yesterday. 70 yr old female, heart disease, bronchitis. Waiting for surgery, spinal, lower lumbar, 6 screws.