I have not heard of this but I would love to try it for Rheumatoid Arthritis. I will pretty much try anything against this dumb disease. At this moment my right shoulder is a mess and I'm using a topical Chinese herbal something or other since I am in Malaysia.
Is the tincture idea to put under your tongue or to use topically?
Its to take internally. They also recommend using it externally to fight infection, but I dont think that would help RI.
My dad had RI pretty bad, and the main thing that helped and got him off meds was going gluten-free. Might be something to look into!