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The FDA classifies most research peptides as unapproved drugs when sold for human use, but the research-only marketplace has historically existed in a grey area for laboratory and scientific study applications

However, some say these rates are based on deficiency thresholds that are set too low

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Benzyl alcohol is a preservative, an agent that acts as a bacteriostat

Vitamin B 12 also may be involved in maintaining sulfhydryl (SH) groups in the reduced form required by many SH-activated enzyme systems

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