Has anyone had experience of this brand of supplement?
In Jan 2017 my vit D reading was 63.4nmol/L. I started taking Doctor's Best 5000iu vitamin D3, together with Vit K2,on & off, not sure of what dose I needed but not wanting to overdose, with a view to increasing my vitamin D in line with recommendations on here .However, in July 2017 my reading had reduced to 54.8nmol/L. At this stage my doctor prescribed Pro D3, 10,000iu every other day equating to 5,000iu daily. By Sept 2017 my reading had risen to 103.5nmol/L. As I thought this was an ok level I went back on the Doctor's Best 5,000iu every other day , equating to 2,500iu daily, expecting it to be a maintenance dose. To my surprise my reading has now decreased to 69.5nmol/L.
Am I doing something wrong, or could these particular supplements be "faulty"? I would appreciate any advice whatsoever.