[DOI] [PMC free article] [PubMed] [Google Scholar] 901
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Focus on these factors instead: Quality of the peptide (purity, proper storage, legitimate sourcing) Consistency of dosing (daily administration at similar times) Route of administration (subcutaneous is most common and effective for most uses) Adequate dosage (underdosing is more common than overdosing) Supporting recovery factors (sleep, nutrition, stress management) Ive seen people get lackluster results from improperly prepared peptides dosed perfectly, and exceptional results from high-quality BPC-157 dosed once daily
(3) A Bjartell, R Ekman, S Bergquist, and E Widerlv (1989) Reduction of immunoreactive ACTH in plasma following intravenous injection of delta sleep-inducing peptide in man Psychoneuroendocrinology, 1989, Volume 14 (Issue 5), Pages 347-55
Takeaway: Fascinating laboratory data, but completely unproven in humans