Can a ulcers make me gain weight if it doesn't. Is there any vitamins to reduce apetite?

ULCER WEIGHT GAIN. Answer to both question is no.By ulcer you mean peptic ulcer i presume, and there is no vitamin which will curb your appetite.
No, no. It shouldn't cause you to gain weight, but some people with ulcers do feel better after eating. No vitamins to induce weight loss.