Help with poor immune system

[Caramello]

Hey everyone,

I'm one of these people that continually gets viruses - either from my work environment (high school) or from stress/depression of LTTTC, or from poor diet/exercise. Most of the time the infection ends up in my throat.

I am currently taking multivitamin tablets (Centerium - 1 a day); Garlic, Horseradish and Vitamin C tablets (2 a day) and an iron/foelate tablet.

I also take Diaformin EX and the Pill.

One of the recommendations that my GP had to boost my immune system was to drink Green Tea.

I am ok with having the tea but my problem is that I rarely drink anything with caffiene in it, as it sends my blood pressure racing and can affect my sleeping patterns really badly.

So question 1 - does green tea have caffiene in it? Will it affect my sleep?

Question 2 - is it worth going to a specialist? If so, who? I have had bad experiences with natropaths before, but this was on the TTC front. I have also seen dieticians but became frustrated. I have no idea who I should be seeing.

Question 3 - anything else? These viruses are really driving me nuts and affecting my time at home and at work...