Could someone knowledgeable about this tell me about the potential for tolerance with ephedrine. Anecdotally myself and friends have found we develop serious tolerance but I often have serious doubts as to the consistency of the quality of the ephedrine from bottle to bottle(thoughts?).
1 - What does the chemistry/literature say regarding tolerance?, How long would you have to stay off to re-sensitise ?
2 - Where can I find a reliable source ( I swear some bottles are bunk or low quality...)?