One final note. I think it is important to always buy your vitamins at one place. A study was done a few years ago of ten different vitamin D products. One had as little as one third the amount as stated on the label. This could have significant effects on some one who buys by price in different places. Don't do it. I buy from one place a product that I consider to be very good and it is cheap. I have followed test results of vitamin D with many people who took this brand and they correlate well with expected potency. If you meet me or e mail me I will tell you where I get that product. I will not sponsor any product on this website. I own no stock in the company.
This is a hobby of mine. A very gratifying one. I receive no money from anyone. I think this would reduce my creditability. If you get a test done ( how else will you know how effective you are in dosing) let me know your numbers and how much vitamin D you have been on. It should be one amount for a total of three months for the test to be a stable indication of your blood level. Adjust your blood level to between 70 and 100 ng for maximum pain relief and especially if you or your family has a history of heart disease or cancer! Don't go over 100 ng!