Dude! Albuterol is a Beta 2 agonist (translation: does the same thing as adrenaline/epinephrine to Beta 2 receptors).
Similar drugs to epinephrine include ephedrine and amphetmaines! You have to ramp up slow for the body to adjust to the drug (i.e. up and down regulate receptors).
I'm suprized you didn't black out from lack of blood flow to the brain (seriously).