The damage from freeze-thaw cycles comes from repeated freezing and thawing of the same solution, where ice crystals form, melt, reform, and melt again, each cycle physically stressing the peptide molecules
In general, organ meats, like kidneys or livers from animals, are very high in B12
When you're checking the label, the key inclusions for you to look for are: iodine (150 g), vitamin B12 (preferably methylcobalamin), zinc, selenium, and choline
While the peptide was generally well-tolerated, it failed to perform significantly better than a matching placebo
Even a single overnight temperature excursion above 8C compromises the 28-day beyond-use date