Need advice for my brother with Stage IV Stomach Cancer

I am sorry if this is long winded, but I am desperately seeking help for my brother. Here is some information... My brother who just turned 37 was diagnosed with Stage IV Stomach cancer earlier this year. He was retired out of the air force and came home to start treatment in April. When he got here, he was in a lot of pain and could not eat. His esophagus had collapsed against his stomach and food would get stuck. His weight went from 190 to 135. I heard about Cell Quest and Flor-Essence. He could not keep either down. He started chemotherapy in April and was doing well. The cancer was shrinking. He tried drinking the Cell Quest again when his cancer shrunk but he could not take the taste. He started to feel bad again around 4th of July. He had a new cat scan done this week. It showed that some of the tumors in his liver shrunk, but others grew significantly. They will not measure his stomach due to the size. His hemoglobin was down so they did another blood transfusion. He has blood in his stool and is vomiting blood. His blood count stayed high for a day so they sent him home. They are starting him on a new treatment with docetaxel and cisplatin next week. In the mean time, he is having a problem eating and keeping food down. He is very tired all of the time. I am not ready to lose him so I need advice on what might work best with him in his situation and the instructions for use. If he doesn't like the taste or smell, it will come back up. I know that something can help give him a longer life span than what he is being told by his Oncologist.