Collagen production and repair in the body declines with age, and for this reason research into collagen has exploded in the past few years. Sadly many products have a boat-load of additives and I am simply not willing to use anything that was not pure. I am a fanatic when it comes to what goes into my body.
This led me ultimately to producing my own Sally-Ann Creed Collagen, with absolutely nothing added. Having fillers and preservatives, artificial sweeteners and other unnecessary additives will interfere greatly with the process of rebuilding the body. This is really why you are taking it in the first place. It is the most abundant source of protein in the human body – but declines quite radically with age.