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Unlike growth hormone peptides (which work through the pituitary) or GLP-1 peptides (which work through gut and brain receptors), BPC-157 works primarily through a different mechanism: it upregulates growth hormone receptors in tendon cells, stimulates angiogenesis (the formation of new blood vessels), and modulates nitric oxide signaling all of which contribute to accelerated tissue repair and reduced inflammation

They rebuild damaged tissue and quiet pain at the source

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But they can cause unwanted side effects, including headaches, back pain, and in rare cases, even an increased risk of heart attack