I am not sure nut I know the time of injection is of great importance. Also be aware that the most common treatment-related adverse event (occurring in about 1 patient in 6) is local injection reaction characterized by pain, swelling or redness. Of 350 patients exposed to Sermorelin in clinical trials, three discontinued therapy due to injection reactions. Other treatment-related adverse events had individual occurrence rates of less than 1% and include: headache, flushing, dysphagia, dizziness, hyperactivity, somnolence and urticaria.