Assuming you don't have an allergy or intolerance to green tea, you should not run into any issues with the green tea extract in your blend. If you are worried about the naturally-occurring caffeine content of green tea extract, please note that 1 serving of green tea extract contributes a negligible amount of caffeine (5 mg, approximately 1/20th of a cup of coffee). You can easily consume more than that by eating chocolate or drinking decaf coffee.
That said, we're more than happy to remove green tea extract from your personalized blend. Just let us know by emailing your Registered Dietitian at firstname.lastname@example.org
Lastly, if you are pregnant or nursing, please consult with your physician before starting any dietary supplement.