i just bought 2 boxes of primatene tabs but i just realized they are only 12.5mg of ephedrine per pill. normally i used to take vasopro which was 25mg. is the 12.5mg 3 times a day enough? i don't wanna take 6 pills a day because that will get expensive and the chance of me accidentally buying too much and getting my door kicked down by the DEA is not something i would look forward too. if that's not enough i'm guessing it would be cheaper safer and more efficient to just buy albuterol. any suggestions please chime in.