(Question) What about neutral vitamin C for chronic gastritis?

I have chronic gastritis, so I take Vitamin C immediately after meals. However, even taking it right after eating still causes stomach discomfort. Therefore, I am wondering how one should take vitamins when suffering from chronic gastritis. Is it better not to take vitamins at all? If it is okay to take them, how should I take them? I have heard of neutral Vitamin C; would it be better to take that instead? I would appreciate answers from those with experience.