Well, I’m biased as I think pizotifen helped me immensely. I also do not understand why your doctor said it has too many side effects, as my consultant said it was the drug with the least listed side effects that she had ever seen (and my leaflet for it has a very short list!).
The reason it’s a bit out of favour, is that one of the (few) side effects is its effect on appetite, so quite a lot of people put on weight when they are on it. I found that happened to me, although my daughter also takes it and it doesn’t affect her that way. One other warning is that it took me quite a long time to get the benefits from it, so it wasn’t a quick fix (can’t remember exactly but I’m thinking around 6 weeks).
But different drugs suit different people, so it’s likely to be a bit of trial and error for you.