Propecia is definitely not poison.....I have had zero side effects from it. It has potential side effects like any drug, By far, the vast majority of people on it have no side effects. Talk to any of the reputable clinics who have prescribed it over the years, including Hassan & Wong and many others. I got it from my family doctor who has been prescribing it for years and advised me he has never had a patient have any side effects from it at the dosage used for hair. Again, I understand some people do have it, but it is an extremely small minority of people and if you have them, just try a lower dose or get off of the medication.