Alternatives to Ketotifen?

I started Ketotifen about 3 weeks ago and it has greatly reduced my symptoms. However I have been experiencing an alarming amount of nosebleeds, almost 1 every day. I read this is a rare side effect. I'm not sure if it's connected directly because I do have chronic sinusitis but I've never experienced this many nosebleeds before. Anyways, it's something I have to discuss with my doctor but I'm wondering are there alternatives to Ketotifen I can ask about and/or try in the event she thinks they are connected?