Vitamin D is an important nutrient for strong bones, and people who take oral corticosteroids may lack it. People who have arthritis are often prescribed oral steroids so they should ensure that their vitamin D levels are regularly checked.
Vitamin D maintains adequate calcium levels in the blood and absorption of calcium in people with rheumatoid arthritis. People with rheumatoid arthritis are at high risk for bone loss and osteoporosis due to glucocorticoid use and RA disease processes.
Vitamin D works by improving symptoms and controlling disease activity in people with rheumatoid arthritis. Vitamin D3 is recommended because it may be more effective at raising blood levels and is naturally occurring form of the vitamin.