Thank you for your message. My wife is presently on alternative and herbal medicines and last scan was encouraging. You may want to discuss the following herbal supplements that were prescribed for us:
Curcumin-It is a turmeric extract-- recommended by a doctor friend who is head of cancer research in MD Anderson, Houston-- dosage 8g a day, in four doses, each dose with 5mg of Bioperine
Coriolus mushroom extract,Green tea extract and Vitamin D3-- recommended by Integrative medicine dept of Sloan Kettering , new York
She is also taking Homeopathic medicines-- Graphite 200, Thuja 30, and Conium 3
Also taking some Ayurvedic medicines--these are made specific to the patient
Hope this is useful for your Dad.
Best wishes