HGH ZPHC Zptropin is a synthetic form of human growth hormone that stimulates growth, cell reproduction, and regeneration in individuals deficient in natural growth hormone. It is used to treat growth hormone deficiency, Turner syndrome, chronic kidney disease, Prader-Willi syndrome, and short bowel syndrome. It is administered through subcutaneous injections, and the dosage and frequency are determined by healthcare providers. It should be stored in the refrigerator. HGH ZPHC Zptropin functions by stimulating the production of insulin-like growth factor (IGF-1), leading to enhanced cellular growth and replication and tissue repair and regeneration.