Is Ketotifen actually helping?

I just started taking Ketotifen yesterday and I’m not sure if it’s all in my head but I could swear I feel a little less anxious/restless/jittery. I’m taking a minute dose(0.05 mg), which is part of my doubtfulness, but I’m super reactive to stuff and had to start LDN at microdose levels because it was strong for me as well. I’m only 24 hours/3 doses in but I woke up this morning feeling slightly less icky than usual(like my mind isn’t completely foggy and I was able to run an errand without feeling as faint as I often do). I’m diagnosed with CFS but we’re thinking MCAS could actually be the driver of my symptoms. Has anyone else here found such rapid results?