Usually works right away. If it doesn't work and she keeps on weezing you have to take her in. They can give her a breathing treatment that will work (if you don't have a nebulizer at home). This winter has been horrible on my son. He has weezing everytime he get a cold. yuck!!
Re: how long for albuterol to work?
Albuteral is a fast-acting steriod, it should kick in and improve the wheezing right away. Its not a one-time fix though, the weeze would come back.