The body yearns for its prior homeostasis. This is true when you lose weight with a strict diet. It's true when you lose it using a medication.
The struggle doesn't stop when you stop losing. My personal experience was that it takes about 2 years for the new 'normal' to kick in. (I lost 60lbs when I was in my early 20s and kept it off until today. The 'after' period was as taxing as the 'losing' period, but in a different way)
At that point only can you 'relax' a bit around your body's cravings for calories.
It's not the worst thing in the world to be on a medication for a couple years rather than a few months, but long-term study of this class of drugs is certainly warranted and necessary.
The struggle doesn't stop when you stop losing. My personal experience was that it takes about 2 years for the new 'normal' to kick in. (I lost 60lbs when I was in my early 20s and kept it off until today. The 'after' period was as taxing as the 'losing' period, but in a different way)
At that point only can you 'relax' a bit around your body's cravings for calories.
This has already been studied extensively:
https://pmc.ncbi.nlm.nih.gov/articles/PMC5764193/
It's not the worst thing in the world to be on a medication for a couple years rather than a few months, but long-term study of this class of drugs is certainly warranted and necessary.