I'm almost 15 months taking abemaciclib. I'm on 100mg x 2 daily and it's manageable, having reduced from 150mg x 2 which was unmanageable, my body was having none of it.
My bloods have been good the whole time, my stomach is another story. Milk is a definite no, small amounts of dairy are ok, and from time to time it rebels for no apparent reason. I've reached a point where I know the signs and I'm balancing things with gastro stop, taking 1 every few days seems to help a lot and keep me out of trouble, and life is fairly normal.
My oncologist has been great and told me I can take a few days break if it gets bad, which I've had to do occasionally. He is keen to keep me on it for the 2 years, even if it means reducing the dose again, and taking short breaks, but it seems to have settled down a bit more recently. He also said that can happen as well.
My hair is ok, it shed quite a bit a while back, but has also settled down, so I'm not sure if that was just it settling back into a shedding pattern. I feel like it's slightly thiner at the temples, but my hairdresser says it's normal for menopausal women to thin slightly at the temples, and to be honest it's only me that notices it when I pull my fringe back.
As you say, we're still here, and abemaciclib has had good results so far, so I'm happy to stick with it.