The only contraindication for fish oil is if you are on blood thinners, such as coumadin, as fish oil decreases the tendency for blood to clot. For that reason, it is also advised, if you are having surgery, to not take fish oil before your procedure.

Regarding the green tea, if it is an estract, I don't know of any contraindications. If you drink green tea, it does have some caffeine.

Leea