Does Vitamin C really works?

This have been on my mind for the past few days already. Since many of you know that I am prone to sickness because of my immune system being attacked by LUPUS, I look for ways to avoid getting sick espcecially during the rainy days.

During this time of the year, I always got colds and cough. Not to mention that my LUPUS flare up when its the rainy season. On my first three years of having these disease I always end up on the hospital bed during these season.

so as a prevention, these year I got my flu and pneumonia shots as prescribed my rheumatologist. Now I also starting taking 1000mg of Vitamin C everyday. But I am wondering if it really is helping because for the past couple of days I feel like I am on the verge of having a flu and colds. Hmm..Or it is just my body telling me that I need to de stress. Oh well, I bought one box of vitamin C so whether I like it or not I need to consume it.