This effect is likely tied to its action on GLP-1 receptors in the brain, which are involved in reward processing
The post says vigorous shaking denatures the peptide and compromises potency, which is why it describes gentle rotation instead
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Nervous system disorders Uncommon: Headache Not known: Convulsions*, Dizziness Heart disease Not known: Palpitations Vascular pathologies Uncommon: Hypertension, Hypotension Respiratory, thoracic and mediastinal pathologies Not known: Dyspnea Gastrointestinal disorders Common: Vomiting, Nausea, Diarrhea, Abdominal pain Uncommon: Dysgeusia, Dyspepsia, Dry mouth Skin and subcutaneous tissue disorders Uncommon: Abnormal skin odor ** Not known: Itching, Skin rash Musculoskeletal and connective tissue disorders Uncommon: Muscle spasms Not known: Myasthenia***, Muscle tension Systemic disorders and conditions related to the administration site Uncommon: Chest pain, Feeling abnormal, Pyrexia, Injection site reaction**** Diagnostic tests Uncommon: Increased blood pressure Very rare: Increased INR*****
Vascular Dysfunction : Compromise of the blood-brain barrier integrity leads to impaired nutrient and oxygen supply, contributing to neuronal dysfunction