Much of what is sold online is labeled research only, and the purity of those products is highly variable, with independent testing repeatedly finding under-dosed, degraded, or mislabeled peptides across the unregulated market
This is a normal and expected response, not a side effect to be concerned about
this assigned the best hit for each of the ASVs and then provided the percentage of identical matches between the sequence of interest and the top hit as well as an e-value (i.e., the number of expected hits with a similar quality that could be found by chance)
Typically, individuals who benefit the most from B12 vitamin injections are those experiencing symptoms of B12 deficiency, which can include chronic fatigue, weakness, mood changes, memory issues, or tingling in the hands and feet