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Key quality indicators include HPLC purity (should be 98 percent or higher for research use), mass spectrometry confirmation of molecular identity, and proper packaging in sealed, light-protected vials

Diarrhea: Occurs in up to 17% of patients, as noted in a study by Karl Mann published in Alcoholism: Clinical and Experimental Research in 2004

So even if your diet is rich in B12 foods, you may not be absorbing it

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It is important to follow the recommended doses, because too low a concentration of the peptide in the body (subtherapeutic concentration) will not bring the expected therapeutic effect