4 oz loose leaf
Green tea is naturally an immune booster and an alternative to coffee so it will help enhance your immune system. It is believed that you need to drink up to 5 cups of tea daily preferably with meals to receive the benefits of this powerful tea or you can take 500 milligram capsules daily. (The complete guide to vitamins herbs and supplements)
Some researchers believe green tea may protect against certain types of cancer because it contains antioxidants. Compounds taken from green tea can be useful in humans. One type of green tea extract called sinecatechins is used to make an ointment (Veregen®) that has been tested and approved by the US Food and Drug Administration (FDA) to treat genital warts.
Another extract, epigallocatechin gallate (EGCG) is being tested to see if it will help with chronic lymphocytic leukemia. Also, there is some information regarding EGCG helps boost the absorption of Zinc into the body.
Disclaimer: Remember to consult a physician before using any vitamin, herb, or supplement if you are on prescription medication.