My husband suffers from tendonitis in his elbows. Whenever he has a flare up we wrap his elbows with Quark, in the evening while he is sitting still. Keep it on for about 20 to 30 minutes. This does wonders for him. He also started to drink a glass of water mixed with one teaspoon of baking soda per day since about a week and is absolutely amazed how this got rid of the pain in his muscles and tendons.