You should seek urgent medical advice if you experience: Severe or persistent abdominal pain, which may indicate pancreatitis Persistent vomiting or diarrhoea leading to dehydration Severe headache or visual disturbance, which may suggest pituitary pathology Visual deterioration in the context of diabetes (possible retinopathy) You should also seek medical advice promptly if you: Are currently using or considering using unregulated peptides and experience unexpected symptoms Have noticed unexplained weight changes, fatigue, or hormonal symptoms Are managing a chronic condition such as diabetes, cardiovascular disease, or a hormone-related disorder Have purchased peptides online and are uncertain about their contents or safety Engaging with a qualified healthcare professional whether a GP, endocrinologist, or registered dietitian ensures that any intervention is tailored to your individual health needs, monitored appropriately, and aligned with current evidence

Neurol.India 2008;56(3):391-393
In: Metodick list strednej komisie racionlnej farmakoterapie a liekovej politiky MZ SR, vol
R., McNaught, A., Pletnev, I., Stein, S
Given the activation of receptors as the only direct action of a neurotransmitter, beta-endorphin is a relatively well-known example of a peptide neurotransmitter primary transmitter at a synapse having highly specific interactions with opioid receptors in the central nervous system [34,35]