Can someone help me out with info on green tea extract.

I bought some green tea extract by Schiff. I says it has Caffeine (as caffeine anhydrous) 50 mg. I just read the post By Ana from last month. It indicated that green tea extract did not have caffeine in it. I was wondering if I should quit taking this one.
the other ingredients listed:

Green Tea Extract (Camellia Sinesis) (leaf) 225 mg
EGCG (epigallocatechin gallate) 90 mg


I guess I should have researched it before I purchased the product. But I didn't. BTW when I tried a search didn't get any info because "tea" only had three letters. I put Green Tea Extract in the search box.