If I take my ventalin I usually stop coughing, but if I have stuff that needs to come out, it does so easier, but then I feel so dizzy. I don't feel dizzy when I haven't taken the ventalin. Is it because I'm coughing more effeciently? Or ? Is this okay and/or common? I feel dizzy to the point of thinking I'm going to black out. Let me clairfy. If I take the ventalin and don't cough anymore I'm fine. Its the coughing after the blue inhaler that makes me feel awful.