'ello leelee.
Welcome to the boards. I'm sorry you have to be here, but I'm glad you found it. I've found forums like this one to be a lifesaver when it comes to dealing with the ins and outs of daily living with this horrid disease.
Is your grandmother forgetting to take her meds, or is she intentionally neglecting to take her pills, or taking them selectively? If she's forgetting, you might try an automatic timed dispenser? Also, is she dosing herself, or does someone do it for her? When my GF was handling his own meds, I came home one day to find him on the floor, absolutely lit, after taking too many of his muscle relaxants (6, I came to find out…he was supposed to take half!

), and he'd tripped and broke his fall with his head. D'oh! I don't know what your grandmother is taking, but if she's managing them herself, I'd remedy that with a quickness.
Or if that doesn't work (my grandfather either couldn't hear the alarms on his, or when he did, he couldn't figure out how to open them, and they wound up shattered), are there any other relatives/friends/neighbors/etc. that would be willing to call or drop by to help you bear the brunt of her anger at being reminded? I reached the point with my grandfather where he could get mad til he was blue in the face and rattle off every four/five letter word in his vocabulary, I didn't care. Life with AD is..interesting enough, to say the least..there's no need to add to it. And its for their own good, whether they like it/realize it or not. So there!

*LOL*
As for getting her to the doctor..perhaps you can trick her into it? Ethical..hardly, but it works like a charm with my GF. But I don't know your situation. My GF has lived with my mother and I for over a decade, and been in our care since '98, so his docs know us well.
Hope this helps, and that you can get your grandmother the help she needs. Again, welcome to the boards.
…mariah…