Green Tea Extract Where Can I Buy Liquid Green Tea Extract?

Where can I buy liquid green tea extract? - green tea extract

I want to start taking green tea extracts, but I can not find in capsules, and they are all very big, you can not swallow, because I difficulty swallowing pills, unless they are really small. I am looking for a concentrated liquid extracts of green tea (a small bottle) with a pipette, but I found online are only in the United States. I have tried to Holland & Barrett, Ebay and search engines, but no luck. Any help?