The evidence from clinical trials is that most of those who stop taking it are likely to regain weight within 2 years.
No regain after a few months is not meaningful - all of us who have been on diets before will have managed that, but, over a longer period of time we have regained, why is why we ended up taking MJ.
The other evidence from clinical trials is that those who continue taking a maintenance dose maintain their weight loss and even lose a bit more.
This is the results from the SURMOUNT 4 trial for 1 year post weight loss:
The trial looked at people who had all been taking Mounjaro for 36 weeks. At this point some continued taking Mounjaro ("Maintenance dose") and some were given a placebo, ie no Mounjaro. They were measured again at week 88, so 1 year after that 36 week point.
-At week 36 when this trial started, looking at all the participants, an average of just under 21% weight reduction had been achieved.
-At week 88, the percentage of participants who maintained 80% of their weight loss was
93.4% for those carrying on with Mounjaro and
13.5% of those who took the placebo
-At week 88 those carrying on with Mounjaro had lost a further average 5.5% of their week 36 weight but
of those taking the placebo 86.5% regained an average of 14% of their week 36 weight.
-The overall mean weight reduction from week 0 to 88 was 25.3% for those taking Mounjaro and 9.9% for those who took the placebo from week 36.
BECAUSE of this trial result, Mounjaro is licensed to be used as a maintenance drug. There is no NICE guidance as to what this should consist of because each person will react differently to maintaining. Some will be able to up their calories and stay on their final dosage, some will need to drop a dose or several, and some may find on/off periods or increased dose spacing works for them. And some, a very few, will actually not need MJ to maintain.
A maintenance friendly pharmacy will need to be able to prescribe to all those situations, including acting as a safety net for those who wish to stop and then find they need to go back on the drug a whole year later.
Personally I am glad that I do not have to stick to some 'advised' maintenance plan that might work for many but not for me, for example. Just the same as the way people titrate up at different rates - going up a dose every pen would have been mad overkill for me personally. I lost almost the whole of my 33% weightloss on 2.5 and 5mg, and only used 7.5 for the final 6lbs.