I have been on Vitamin D2 (ERGO) 50,000 I CAP twice a week for a month now... my level of Vitamin D was 13... also have a Folic Acid deficiency of 2.7 ... I have not seen any improvement ... very stiff, hands, fingers, shoulders and some time legs... just wondered how long it would take to see some improvements. I get very little sleep as I take Alleve and Tylenol for pain... what does everyone else do for the pain ?