Other types, like hydroxocobalamin, might be used for different reasons
Within the research community, compounds are generally organized into a handful of recognized categories: growth hormone and hormonal-support peptides, recovery and tissue-repair peptides, metabolic and body-composition peptides, and cognitive or nootropic-class peptides
Chang and colleagues (J Appl Physiol, 2011) documented enhanced tenocyte outgrowth, survival, and migration in cultured Achilles tendon preparations
If you follow a vegan diet, B12 is not found naturally in fruit, vegetables or grains, so fortified foods or a supplement matter more, and seaweed, spirulina and similar products are not reliable sources
For everything else, bacteriostatic water is the standard