There is several ways to do this; I actually like the texture of gelatin sheets soaked in water for a few minutes.
Take it with your supplements to "chelate" them.
One other option is to buy bones and made broths yourself.
I also have a craving for it; and when I cook the broth I cant resist digging in the marrow; a real treat.
Toxins; yes, a big concern, but really hard to avoid these days, I got my hypo T condition when I was a vegetarian with a more "healthy" diet than I have today, well; depends on what idea one has about the issue of course. We just had a thread about the it: F-you all etc;
If possible I buy bones from game, second grass fed bovine, but this is hard to come by here. Third is regular stuff.
In US I am sure it is possible to buy gelatine from organic / grassfeed animals ??
I like Weston Price`s take on it;
Glycine might also be considered a "conditionally essential" amino acid.
As the simplest amino acid, it constitutes a basic nitrogen pool for manufacture of other amino acids, and it is used in the synthesis of hemoglobin, creatine, porphyrin, bile salts, glutathione and the nucleotides DNA and RNA. Glycine is involved in glucogenesis (the manufacture of glucose), and low levels may produce hypoglycemic-like symptoms.
Another vital function is detoxification. The human body requires copious amounts of glycine for detoxification after exposure to chemicals, and it conjugates directly with benzoic acid
. In that individuals stressed with benzoic acid
show inhibition of glutathione synthesis, and glycine is a precursor amino acid for glutathione, some researchers have concluded that glycine might improve the functioning of Phase II hepatic detoxification. "Benzoic acid is used widely in the food industry as a preservative. Under normal circumstances these sources of benzoic acid can be handled with ease at the levels found in the total diet by most normal individuals. However, even these low levels might present a problem to individuals who already have a compromised glycine status in trying to satisfy an increased demand, such as pregnancy or sickle cell disease."15
Glycine also helps digestion by enhancing gastric acid secretion. Research published in 1976 established that only proteins stimulate gastric acid secretion, but apparently not all amino acids do so.16 Glycine is one of those that do, a fact that was known in 1925.17 The effects of other amino acids and their related peptides on acid secretion has not been determined, but researchers have proposed that "glycine may have application in the design of chemically defined diets for patients with gastrointestinal disorders."
Skin collagen are also made of the amino acids from gelatin + vit C and some silica. This could be sold as skin / anti aging capsules, I am sure. Put some Iodine
in and one could probably triple the prize tag.