Promaxol decreases inflammation which could help in an indirect way to maintain normal temperature. With pain and inflammation temperature can rise. It doesn't contain remedies more often used for fever. I think you should also give Canine Probiotics, MSM, and vitamin C in addition to your other supplements. These also help to reduce inflammation and work well along with the IONX products for a synergistic effect. I would use a half dose of Promaxol with breakfast and a half dose of Arthr-IonX with supper until you see some improvement. Once you have things stable you could talk to your veterinarian about decreasing the dosage of Novox. Some owners have been able to wean their pets off of NSAIDS and keep them comfortable using Arthr-IonX.
What do you feed your dog? I would suggest a fish, turkey or duck diet and avoid any GMO grains. These protein sources are considered to be cooling in Chinese food theory. You do not want to add more heat to the body right now. Chicken and lamb are warming. Please let us know how your dog progresses or if you have any other questions.