I've been taking Phentermine continuously (one 37.5 pill/day) for 9 months. Amazing results the first few months, then it slowed down and now it's stopped even though I have more to lose. I've read different posts saying its effectiveness is no longer than a few months. If I quit now, how long should I wait before starting to take it again? And is it unsafe to quit "cold turkey?" I guess I'm addicted to the stimulant part of the drug as much as the appetite suppressant. Thanks.