A user experienced a severe, life-threatening allergic reaction after injecting 100mcg of Sermorelin and 100mcg of Ipamorelin. Symptoms included intense itching of the palms and body, internal ear swelling, rapid heartbeat, fainting, profuse sweating, and subsequent shivering/hypothermia-like symptoms. The user noted a history of worsening injection site inflammation and itching with prior Mod GRF 1-29 use before this acute episode.