Lifestyle tips

I'm wondering if there are any Medications to help boost weight gain?

Playing with medications is not a wise thing to do.
Some medications will cause weight gain as a side effect but some people are not affected in that way at all.
Medications can affect internal organs like liver and kidneys.
Don't take stuff if you don't have to is what I suggest.
So there are no pills for weight gain .

No unfortunately not. (At least to my knowledge)
Nothing that really works and is not connected to a serious health risk !
There are some supplements using bitters to advocate appetite.
Some medications for depression do have the side effect but def. Not all with some even having rather the effect of making people lose weight, plus the weight gain differs a lot and is probably also connected to the disease. ( si giving them to healthy persons should have no effect).
Than everything that spikes insulin will cause weight gain, so you really need to know what you are doing since if you spike insulin with out eating you glucose levels with drop and you can die ☠️
So I don’t see any use exepet in some death feedee‘s fantasy „ getting captured, injected with insulin forcing the feedee to either eat or die“
Betablockers not only keep the heart frequency lower, but block lipolyse but the effects would be rather small. So just increasing or changing food will have far greater effects..

sounds like a potential business venture

There are weight gain pills, but odds are, they won't help your current situation.

www.verywellfit.com/are-weight-gain-pills-safe-to-use-4160741