Hello and thanks for researching this very important question!
Albuterol is used in veterinary medicine, but, as in people, it can have very serious side effects if overdosage occurs.
Dogs can have a number of problems related to the stimulant effects of this drug: it can adversely affect the heart and other internal organs.
You can read about signs of overdosage here:
***If your dear pet is experiencing rapid heartrate, or increased respiratory rate (breathing really really fast), and/or has been vomiting, he should be examined and treated right away.***