High Metabolism Problems

Can I gain weight with a high metabolism?
I have always been thin but know it is causing me health problems. I have been to doctors I heard there is a weight gaining pill. I asked my doctor but he didn’t know what I was talking about does anyone have a suggestion that won’t lead to further problems?
Yes my thyroid is fine I am taking proten natualy but it isn’t sticking. I am 118 and 5’5 I used to be 125 but have stoped gaining it back and know I am to thin.
Periactin is the weight gaining pill I took. Originally it was an allergy pill. I think it is also a pill that they give to some (not all) people who suffer from anorexia nervosa. It works okay; it increases your appetite but one side effect is it makes you sleep all the time….I guess thats supposed to help you gain the weight.
Ayurvedic Treatment Saves 3 Time Stroke Patient (Part 4)

Metabolism Masterclass