I have been off for about a month now.
I was on for damn near three years, my doses varied over time. my high point was 225mg ephedrine hcl and 9 nodoz a day (plus coffee, diet soda etc.)
when I quit I reduced by one pill of each a week until I stopped. there was a period during the decline that I would wake wheezing pretty bad. I have had minor asthma for my entire life, so albuterol inhalers got me through.
Risk to the heart and bp and asthmatics is overrated. What really needs to be looked at is the risks to brain chemistry. this stuff damn near drove me insane. I wound up with an anxiety disorder and bulimia before starting anti anxiety meds.
People don't understand the delicate balance between epinephrine and norep, as well as dopamine and seritonin. Ephedrine sends these chemicals into fluxes that WILL affect your mind.
I won't ever take them again. I think crystal meth is safer, personally. I honestly feel that this is far more dangerous of a gateway drug that alcohol or cigs, also.
If you can handle it, good for you. BUT IF YOU HAVE ANY HISTORY OF PSYCHOLOGICAL IMBALANCE AVOID THIS LIKE THE PLAGUE!