I will be starting 2 mg of Ketotifen tonight for MCAS and my understanding is it works both as a mast cell stabilizer and H1 blocker. I was wondering if anyone else is taking it or had tried it and how it worked for you? Good or bad! I am always hesitant with new meds but feel this one is important to try. I know it can cause sedation, nausea and all the typical stuff but wanted to hear more details from anyone who has tried it. Thanks!