@Mondaytuesdayhappydays
I think YABU. And allowing your cousin to do something potentially dangerous.
I am a Doctor who uses GLP-1 and the combined GLP &GIP agents daily. You should not, under any circumstances, give prescribed medication such as these to someone else. It’s dangerous. They are so helpful in many ways for a number of conditions- not just diabetes and weight loss- but they do come with potentially serious side-effects and for each patient the risk vs benefit ratio is different. You are playing a potentially very serious game- your sister may well be absolutely fine or she might become very unwell. I know nothing of her medical history, but there are contra-indications to these medications where they absolutely should not be given. And situations where they are “use with caution” and requiring careful monitoring. Do either of you know what these are, or have the ability to monitor? I doubt that very much.
There is a reason that they are prescription only medications- safety! Do you not think the manufactures would be overjoyed if they could sell as much as they could to whoever would buy it? The only reason they don’t is because of the risks to their business- and if not prescribed appropriately they know more people would be harmed. And they could be sued.
Seriously, stop and think about it for a second. You pay a private provider, whose sole purpose is to make money from you by selling you a drug (I’m not knocking it- private medicine absolutely has a place, though I do wish some of the private companies who are prescribing weight loss medication would be more thorough than they are). And yet, these providers will not sell your sister the medication! Because she does not meet their safety criteria. I urge you to think again about that- a company which exists to sell weight loss medication to make a profit will not sell it to your sister- what does that tell you? Please, think about this with some logic.
As for you sister, it sounds like she may well have an eating disorder. She may not restrict or over-exercise enough to be underweight, nor does she binge and purge. But what you describe is disordered appetite and eating. In the absence of certain medical conditions, which I’m sure you’d have said existed, the symptoms you describe point towards a real problem. Which she needs help with, though I am more than aware if the limitations within the NHS in this field and she may need to go privately.
I would also strongly suspect that you (and possibly your sister) are rather naive if you think a “short break” from these symptoms will be enough. I don’t think that will work the way to both seem to think, I doubt it will be enough. Say it does work- is your sister really going to want to go back to a situation she describes as intolerable? Nope, she’ll want the medication but she still won’t qualify. Then what is the plan?