Limit your sugar intake, you do not have to go all keto like myself, but SUGAR is a KNOWN INFLAMATORY agent. Foods high in sugar, 1 fruits dont eliminate these just watch amount consumed.
2 anything NOT GOD MADE.
So eat lots of meat, and veggies

What might work/help for osteo may not be what is needed for RA and vice versa. I have both. Celebrex did nothing for the OA. Ibuprofin has proved to help the most. I also take RA meds. I've had RA for about 12 1/2 years. Treatment for OA is not going to help with the RA. They are two totally different entities. See a rheumatologist and see what he/she suggests for your RA. It's nothing to fool around with. Once you have damage it cannot be undone.

glucosamine does work. it takes a month to build in your system. it is dried shark cartilage and it actually helps boost your cartilage.

I had osteoarthritis first and had to have knee surgery and. A year later, hip surgery on the opposite side. I have taken several anti-inflammatory meds - most upset my stomach. In between surgeries I found out I had RA and started taking Arava or Leflunomide for it with additional prednisone. But not until I was put on Humira did I get much relief from RD. It has helped my osteoarthritis too. For the fatigue I added a super complex B to my vitamins. If I am around someone with a cold I will take extra C also. Blue Emu cream helps with both for me. If I have to I will take an anti-inflammory Med Diclofenic and I also have a gel of it that helps too. Sometimes I think I have fibromyalgia and my RA dr says the Humira helps that too. A good RA dr is a must!!

I to have R A and osteoporosis. I got RA first then after many years of predisione got osteoporosis. Each treatment is different. I have tried countless different treatments. This past year I was put on forteo a injection you take every day for two years to help rebuild bones Soon I'll get a bone scan to see if it actually is working.
Please see a good reumtologist to find what might work for you
Many blessings.