Super similar story. My initial vit D level was 6!! I'm a redhead and live in Upstate NY. Took the big doses of PO vit D but it took a LONG time just to get an adequate level. Never thought of using a UVB light, but I am now. Thanks for the comment! P.S. Last D level was 38 but I do make a point of getting 15 minutes of direct sun exposure in the spring/summer months and I also take 4000 IU/day. How did you find the light?