Route of Administration How a peptide is delivered dramatically affects how long it stays in the body: Subcutaneous injection : slower absorption, longer duration Intramuscular injection : faster peak concentration, moderate duration Oral and intranasal peptides : often rapidly broken down, requiring protective technologies or higher doses For example, oral BPC-157 may work primarily through gut-localized pathways, while injectable versions may provide broader systemic benefits
Outside of trials, real-world patient reports suggest a range of experiences: Cases of Decreased Libido: A peer-reviewed case report documented a 36-year-old woman with obesity who developed sexual dysfunctionincluding decreased drive, genital dryness, and difficulty achieving orgasmwhile on tirzepatide
Poison Control Centers Urge Caution Thinking Ozempic or Wegovy for Weight Loss
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There is research, for example, showing that consumers think that products presented in a green label are healthier than they really are, she says