How do you keep the hair that you have without any side effect medications?
Most men have no side effects from Propecia, as the sexual side effects only occur in 1% of patients. Members of my own family take it and have no side effects, nor have they ever had them. Minoxidil has side effects of its own, including changes in blood pressure and skin irritation, but these are also not the norm.
Every medication has some potential for side effects, including extremely common drugs like Tylenol. Each person will react differently.
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