Same thing happened with my 6 mg shots, went up to 7 and still nothing. Tried 8 mg last Friday and the reta feeling plus weight loss came back. That was from a fresh vial after using the old one for six weeks. With 3 ml bac in a 60 mg vial, your 5.5 mg dose would be about 28 units right?
Been using reta around two months now and the results hit right away. At 4 mg the food noise and cravings were gone and I stayed satisfied longer. Over the past couple weeks though I can eat way more before getting full and the scale has stopped moving. The vial was 60 mg mixed with 3 ml bac water. I raised it to 5.5 mg but still no change in the last two weeks. Maybe the vial lost strength?