I took Phentermine some time ago and like you I really liked it and lost quite a bit of weight. I originally found Weight Loss Center because I wanted to buy Phentermine again. I understand it can't be bought online anymore and Weight Loss Center offers a Phentermine alternative called Phentramin-D. I took Phentramin-D for three months and think that it is the closest I have come to finding something like Phentermine. Phentramin-D didn't work as well over the short term, but over the full three months I kept losing weight unlike with Phentermine.
I would recommend you give it a try if you're still looking for a phentermine replacement. Check out the page
Buy Phentramin-D $67 - Phentramin-D - Phentermine Without Prescription
Hey, if you do order some let us know how it goes. Cheers