Thank you all for your replies, we will definately check out the tea.
My dad is 55 and ready to fight hard. He is already putting himself on a completely vegan diet. He watched a video called "I'm not afraid of cancer anymore" and gave him some hope, even if the doctors can't.
We will also be looking into clinical trials, but for now we sit and wait to hear what the doctors have planned.
God bless you all.