I have been using minoxidil (actual rogaine 5%) for about 2 and a half months now and it has been very effective in thickening up hair all over the top of my head as well as improving the hairline by thickening up the thinner light hairs that made up the line. i am very pleased with these results but I want to save money by ordering a cheaper version of minoxidil. however, i am really excited about my results so far and dont want to mess with whats working so...has anyone had problems after switching brands? no problems? thanks a lot