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The TFA is an acidic compound used in the peptide synthesis process, but needs to be removed again after undergoing a salt (ion) exchange and then lyophilization to neutralize the TFA before it can be called safe again

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The background A reader contacted Fact Checker after she was enticed to sign up for weekly B12 shots with the claim that they're a way to lose weight, increase energy and help tissue recovery after a workout

Resources like the SeekPeptides peptide calculator can handle these calculations automatically if you prefer not to do the math yourself

Where can Vitamin B12 be sourced