Can't praise this company enough.
Advised by GP to take vitamin D and B12 as levels very low. Chose British Supplements
based on positive reviews. Also like the companies ethos and 'no nasty fillers' approach.
Just had blood test and both levels now in the high normal range. They definitely WORK and feel so much better. Also taking some of their other supplements, including msm, collagen, Chondroitin and Glucosamine.