You are confusing ephedrine with psuedoephedrine. You aint cooking dope with ephedrine believe that.
Go to local pharmacy or walmart or whatever ask for Primatene Tablets (or Bronkaid if they dont have them) and you should be gtg.
Primatene are ephedrine hcl while bronkaid are ephedrine sulphate. Bronkaid will give you more energy/focus primatene work for longer duration.
Both should be readily available and cheap. Throw in 200mgs caffeine and you are all set.
2 primatene=25mgs but bronkaid kinda.need more i usually need 3 at a time.
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