Sorry you are here, and welcome!
I have been in pizotifen for about 10 weeks and I'm a LOT better than I was, although not completely right yet. But I'm heading in the right direction. Nobody really knows 'why' MAV and not even really why the meds work, but must people find a med that helps a lot.
I found the pizotifen hard for the first few weeks due to lethargy, fatigue, general weirdness, and a drop in blood pressure from 140/90 to 116/80 in a week. However, I persevered and I'm doing ok. Working quite a lot, I can drive and use computer screens again, but not up to 100% carefree life yet.
Anyway, good luck.
Which Dr did you see?