B.M.
K.,
You have a lot of great questions. Good for you for wanting to supply your body with good, quality supplements. You want to be able find a vitamin company that has science and research behind them. Its sometimes hard to do and most people don't know where to look.
Contact the companies that you are looking at and ask them about how many scientists they have on staff, how many peer review journals they have been written in, where do your raw materials come from?
I can assist you with finding a good quality company if you are interested and I can show you how to tell what's good and what other questions to ask, if you are interested.
You are right, though, what is on the label isn't always what is in the body and a lot of times, it goes through your system without even dissolving!
Send me a message and I can send you some information, if you are interested!
B.