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A purity of 99% by HPLC is the standard for research-grade tissue repair peptides

Because plant foods do not contain vitamin B12, vegans and vegetarians are at risk of developing deficiency and need to incorporate other sources of vitamin B12 into their diets, such as supplements, fortified breakfast cereals and plant milks, nutritional yeast, and fermented soybeans (tempeh).6 In addition to inadequate dietary intakes, vitamin B12 deficiency is caused by diminished or absent production in the gut of hydrochloric acid and intrinsic factor, both of which promote the absorption, transport, and uptake of vitamin B12 by cells

It is crucial to consult a healthcare provider before starting any new supplement, especially for individuals with pre-existing medical conditions or those taking other medications, to ensure safety and appropriateness

10.1038/s41514-024-00181-1 186 MarchettoN