If you get sick a lot, you are probably missing some things in your diet. I was sick
a lot last year. This year, I started taking supplement pills(Woman's One a day, and then one mainly for vitamin C) I also began to eat correctly(no more junk food) and working out a lot more and I haven't been sick since, and also feel a lot better energy wise.
So yeah, I'd suggest if you get sick a lot to take something to help give you extra Vitamin C. Because it will help your immune system
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Mainly if you think you are getting sick try and catch it before it gets worse(sleep as much as possible, eat some fruits and veggies and try and get A LOT of vitamin C in yer diet.)