should seek doctors advice.
works very quickly.
If you have not felt relief after several doses over 6 hrs then it indicates that your asthma
medication is not working.
The general rule is that if you feel you need more of your asthma medication to treat an attack over 18 hrs then you should meet your doctor immediately because it may be a sign of an impending serious attack.
Also Albuterol when administered through metered dose inhaler is generally safe but when administered orally or in nebulised form can produce serious side effects in larger doses.
So you most definitely need to see your doctor now.