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Contraindications and precautions Consider avoiding DSIP or consulting a physician if: Pregnant or breastfeeding (insufficient safety data) Taking naloxone or other opioid antagonists (may block effects) Using medications metabolized by peptidases (potential interactions) History of immune disorders (theoretical immunogenicity concern) Already using multiple sleep medications Drug interactions Because DSIP degrades via amino-peptidases in blood, medications affecting these enzymes (like the ACE inhibitor captopril) could theoretically alter DSIP metabolism

However, much of the available evidence comes from laboratory and animal studies, and human clinical research remains limited

Severe adverse events have not been a pattern in community usage, but human safety data is limited to a few pilot studies

Side effects that are rare, delayed, or cumulative may not yet be identified

Stability of Norleual in rat blood as compared to D-N]e-Tyr-Ile-NH-(CH 2 ) 5 - CON