Yes, whenever I take high dose of vitamin C, it usually seem to reduce other symptoms as well. But it still depends what I also eat that day; if i eat or drink something that may aggravate my symptoms, vitamin C seemd to be less effective. I once took 1000mg Vitamin C every four hours for 5 days and it felt good.
Nowadays I take multvitamin and mineral in the morning and strong vitamin C at night along with some other supplements.