Dropped roughly 10 pounds and shrank a size or two within my first month on Tirz, though most of that landed in the opening two weeks. Things leveled off after, never really dipping further, but I'd say body fat kept trending down regardless.
Switched over to Reta now, running split doses of 1mg each, totaling 2mg weekly. Just handled this week's second injection earlier today.
Worth mentioning, the morning after my very first 1mg dose I woke up with an anxiety spike. My pulse felt elevated and wasn't settling down... which is basically the trigger for a full anxiety episode and, well, that's exactly what happened, lol.
Honestly Reta doesn't register with me nearly as strongly as Tirz did aside from that, though my energy levels do seem a bit better lately. I do notice I sweat more easily now though.