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Research-grade peptides have no required purity thresholds, endotoxin testing, or independent third-party verification of label claims Bacterial endotoxins in contaminated peptides can cause fever, hypotension, and systemic inflammatory responses even at very small concentrations What it may miss It may not cover eligibility, contraindications, medication interactions, lab history, or dose escalation
B12 supports the production of red blood cells, which carry oxygen throughout the body
Are there regulatory actions, FDA warning letters, or significant complaints against them with the Better Business Bureau or state medical boards
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