If you actually did your own raw materials testing, tableting/encapsulation, finished product testing and stability testing, I can assure you, you would not be using pyridoxal 5 phosphate, the alleged active form of B-6 NOT used by companies who do their own raw materials testing, tableting/encapsulation, finished product testing. P-5-P only exists in living cells and is rapidly converted to pyridoxine upon cell death. Pyridoxine is the predominant form of B-6 in hominid food sources. Pyridoxine-HCL is stable in air and is easily phosporylated for active transport in the presence of magnesium and riboflavin. Companies truly interested in providing a B-6 pill that has a long shelf life and is active have long known this. All multis have riboflavin and mg present, so why formulate with the far more expensive and far less stable P-5-P? Since your products are currently private labelled by a company with only an NPA or TGA certification, this type of testing is probably not occurring.
Only a tiny percent of the population cannot methylate, methylated forms of folic acid do not benefit the vast majority of people who buy supplements and are very expensive compared to folic acid. But, wouldn't it be better to have a program that encourages people to encourage customers to eat leafy greens, a source of natural folate?
It will be interesting to see how your products change once you start doing your own manufacturing, especially if you actually invest in the expensive laboratories required to properly test. It will also be interesting to see how many of your current products have raw materials that are not GRAS, NDI or Prop 65. I bet your catalog will decrease in size dramatically, but not as dramatically as your gross sales.
P.S. tocoferols should tocopherols, cobalamine should be cobalamin, maganese should be manganese, etc.
