I just finished my hyperbaric oxygen treatment to heal the tissues in my throat which was damaged my radiation. I have to say it helped a lot, now I am about 2.5 months after the ending of radiation (33 rounds, 6600 Gy total) and I can eat anything I want. Dringking orange juice won't bother me anymore. If the tissue in your throat won't heal for a while, you may consider ask your doctor for this treatment. Of course, there are some risks involved, I was told by my doctor, if there is any residual cancer in the body, the treatment will also help it progress rapidly.