I'm taking letrozole and abamaciclib for breast cancer. I've found ways of coping with most of the side effects except a constantly runny nose and streaming eyes. These only started after an infusion of zoletronic acid. Has this happened to anyone else? Has anyone any advice to ease it? I'm blowing my nose every 10 minutes ( I timed it) and getting through boxes and boxes of tissues. My eyes feel like I've been crying none stop.