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does ghk-cu develop tolerance or desensitization receptor downregulation pharmacological long-term use Regulation of µ-Opioid Receptors: Desensitization, Format:50ml ghk cu peptide injection ingredient-folate

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The researchers called it a “potent initiator of erections in men…” A later study also found that administration of a similar peptide hormone (PT-141) resulted in a rapid increase in erectile activity—so much so that the scientists concluded that “PT-141 holds promise as a new treatment for sexual dysfunction.” There is also evidence that peptides can help increase testosterone levels, which in turn, may improve sexual function

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