For tendonitis, perform physical therapy to include stretching (Achilles tendon and calf muscles), strengthening, and use of anti-inflammatory methods, including ice, ultrasound, or iontophoresis. Iontophoresis is a treatment that uses an electric current to deliver dexamethasone to the affected area to reduce inflammation.
About 3 yrs ago I sprained my left thumb I worked 365 days a year in my janitorial business and though it hurt I kept using my thumb thinking it would take a little longer to heal but so what. I don't know when the tendonitis set in but I remember I couldn't use the thumb. I did research and no one had a cure. I am no novice with vitamins and supplements as I was taking quite a few at the time.
I did some research and the following are what I attribute to curing the tendonitis. Oh, I ran into some financial problems and stopped taking them it took about 9 months(I guess) for it to come back. Rescue 1250 10 pills a day, GLC 2000 per instructions, hyaluronic acid 50mg 2x a day, MSM 6,000mg a day(start slow), MSM cream 3x or more a day, serrapeptast 80,000IU's, calcium/magnesium 3,000mg a day. ACV 1teaspoon with meals and Ultra Source of Life liquid per instructions. I was already taking some of this anyway I simply added a few and increased dosages. I think the GLC 2000 was the key but its just a guess. I don't know how long it took to go away I just noticed one day it was gone. My guess is 3-4 months. U can experiment after the pain is gone and cut back on a lot of this it is pricey. I cut back on everything by easily 1/2. Good luck!