Whats your weight and height?
tirz is a glp and gip agonist and reta is that and also a glucagon agonist but to gain the extra function it loses some potency in the first two. It is only the glp and gip agonism that supresses appetite so if that is your goal tirz is a more potent apatite suppressant but for overall weight loss reta is better. In general reta is more conducive to healthy weight loss whereas tirz lets you starve yourself in peace, if you look up reviews from people who have used both you see that people who swapped from tirz to reta are caught off guard by how much more hungry they are on reta but most people on here are too new to this stuff to have used tirz so don't know that. I do feel a little bad advising your unhealthy eating but you are right, I would be a hypocrite to say I'm much better
really depends on a lot of factors, if its just appetite suppression then 0.5-1mg should do just fine, but I ran 2.5mg for a month (2.5 x 4 weeks from the start) and lost 25lbs, mostly fat bc I implemented a high protein and carbs diet incl working out which you should do nonetheless on reta
