I lost my mum to breast cancer after a small fight of just 5 months 7 years ago and not knowing anything at that present time just listened to the doctors. I have now found out my dad has extensive small cell lung cancer and he has just started on chemo. We have been looking onto different products he can have after the chemo as the doctors say he can only have 4 rounds and found various websites which we have ordered products from which he has not started yet but is due to start after his chemo. These are from gethealthyagain.com and some juices which might help your dad you can get some of these from costco which are Noni Juice, Mangosteen Juice, Pomergranate Juice, Goji Juice. You can buy Goji berries on line from various supliers. Give it a try cos every thing is worth it. My thoughts and prayers are with you all and just try and keep your dad drinking as much as possible as well.