How can I boost my immune system?

[Shanti]

Olive Leaf Extract (liquid form)..... health food stores

[Trillian]

You need to take a holistic approach to it and look at your entire lifestyle. Look at what you eat and how it affects your gut - raw veges are better than cooked in some instances. And 70% of the body's bacteria lives in your gut, so if you fix that first, you have a good chance of getting everything else right. I would recommend a probiotic to get your gut in order as a starting point.