I recently had my third HT. All have been fairly small sessions (600, 2100 and 1500) because I've maintained decent coverage thanks to Propecia. I've used Propecia since January '99 and about a year and a half ago it began to lose its' effectiveness. Now is it time for me to swtich to Avodart? I tried it once before, about two years ago and had a two month long shed. Any ideas and personal experiences would be greatly appreciated.