Sermorelin can be well tolerated in selected patients, but it still changes endocrine signaling and should be clinician-directed. Your clinician will review glucose metabolism, pituitary history, active cancer concerns, pregnancy status, other hormone therapies, and concurrent growth-hormone-axis peptides before starting treatment. Possible side effects can include injection-site reactions, flushing, headache, dizziness, tingling, or symptoms related to increased growth-hormone activity. Human studies of GHRH(1-29) reported a GH response with relatively limited acute side effects at studied doses, including transient flushing at higher doses.