There is no clear data that I am aware of regarding MSM or Emu oil.
Regarding the glucosamine, most of the data for this suggestes improvement within 6 months. The data is less clear for use longer than 6 months.
With the chondroitin, there is no evidence of a dose response relationship. Doses a 800mg and 1200mg per day were similarly effective.
The typical dose of the studies are 1500mg of glucosamine and 800mg or 1200mg of chondroitin.
You may want to discuss this with your personal physician or rheumatologist.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b