Dear Yogasun
I am not a naturopath, but i do have a professional therapy qualification, and like yourself i have been interested in nutrition for over 20 years.
Yes, magnesium is an incredible muscle relaxant and the most bioavailable forms to my knowledge are magnesium glycinate or magnesium monoaspartate.
You could also try using an ointment that contains capsaicin - you can apply this to the painful area 4 times a day.
Discover DL- Phenylalanine it helps your brain side step pain. You take 1500mg per day.
There are also herbs that offer low degree muscle pain relief: Black Cohosh, Devils Claw, Wild Lettuce, Fenugreek seeds, Meadowsweet (natural source of salicyclic acid).
Black Cohosh tincture : Dose 2-4ml has had favourable results reported.
Hydrotherapy might also be helpful and saunas are good for relaxing the muscles.
Did your husband develop this condition after the age of 65 and after a flu-like illness? Does he take 5-15mg of prednisolene per day, if so the best time to take this tablet is after breakfast to prevent stomach irritation.
On the plus side PMR does disappear, so your husband can look forward to recovery, however it takes 2-3 years to get there. You probably know most of what i have said, but i hope some of it might be useful.