If concentration is moderate, switch to a higher-concentration product
Treatment doses for deficiency are substantially higher, typically involving intramuscular injections of 1,000 g or oral supplementation of 502,000 g daily, depending on the underlying cause and severity
Lau & Sarkar, Biochem J, 1981 Collagen, in cells and animals Collagen production in cultured skin cells, and connective tissue in animal wound models
You will likely need to call several companies before you find one that has adequate testing procedures
What you need to understand, however, is that their criteria for success and your criteria for success may be radically different
STKE pe31 (2004)