| Effect | None |
| Trial Design | Double blind |
| Trial Length | 6+ Months |
| Number of Subjects | 146 |
| Sex | Both Genders |
| Age Range | 45-64, 65+ |
| Body Types | Obese |
Supplementation of vitamin D3 to aged persons with osteoarthritis to assure a serum vitamin D concentration of above 36ng/mL (2,000 IU at baseline, sometimes esclalated to 4,000IU) failed to reduce pain symptoms of osteoarthritis and failed to reduce the degradation rates of collagen.
