Wow mama, I don't think 6 weeks of no work is a great idea either. LOL.
Tendonitis can be hard to heal because tendons are not very vascular body parts, so blood flow to them is minimal. Tendons aren't the type of body tissue that is in constant renewal like skin or bone...
I suppose it might help to have him take capsicum or red-pepper suppliments (or just eat a lot of pepper plant spicy food. The more spicy, the more capsaicin there is). Capsaicin is supposed to be the active compound in spicy peppers, but usually, the whole thing, not just capsaicin is more beneficial than just capsaicin in an extracted form. The idea that all the other compounds that make up the plant aren't beneficial is just incorrect. But any way to increase capsaicin will help to promote bloodflow to extremities and less vascular areas, in case he doesn't like spicy foods.
Also, lots and lots of water. The more hydrated his body is, the more blood and other body fluid (like lymph) can make it's way into those less vascular areas. He needs to be drinking enough so that his pee runs clear. Sorry for the graphic. LOL. (And it shouldn't be running clear because he just had a cup of coffee. Coffee just pulls water to itself and into the bladder, actually dehydrating him.)
I would also massage the affected area regularly, since moving the tissue and fluids around it, may stimulate faster healing. In fact, massage the whole arm.
and of course, resting it would make sense. If I were him, I'd see if there was a job he could split with someone else. He'd be able to make half of his day without the action that is causing it, and the other half learning a new area. The other person would learn his job too, maybe that'd be a good thing for the company. Obviously this may be impossible, and I don't know what he does, but hey, just a suggestion.
I want to emphasize that I am not a doctor and have never read these suggestions as therapy for tendonitis. Rather, I just theorized using what I know about the body, tissues and beneficial therapies in general. In theory, it'd be very helpful. In reality... Hey, it can't hurt.
