After Restarting Propecia, I’m Not Seeing the Same Quick Results

i started on propecia in 06. after 3 months i saw tremedous results and my hair density and quality increased. then i stopped taking propecia for a while and my hair started thining again. now i am back on propecia and its already been 7 months since i started taking it again but i am not seeing the same quick results that i experieced when i took it the first time.Should i stay on it or stop taking it? is propecia not effective for me anymore?

Your experience is common. When you stop the drug and lose the benefits, the process is often not reversible. There is still value in the drug, but the greatest impact is for the initial use period and it must be maintained without interruption.