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GLP-1 medications work through two primary mechanisms within the brain: Strengthening the blood-brain barrier, which protects against harmful substances 28 Reducing neuroinflammation through specialized brain cells called microglia and astrocytes 29 GLP-1 receptor signaling enhances neuron growth and survival 28

Reports of cataracts, hyperthermia, and deaths mounted, and by 1938, the FDA banned it as extremely dangerous. In the 1940s, amphetamines became the weight-loss drug of choice

Injection site reactions (temporary redness, mild discomfort) are typically minor and resolve within hours

PT-141 (CAS 189691-06-3), also known as bremelanotide , is a synthetic peptide studied for its effects on sexual function through central (brain-mediated) pathways

Highlights of prescribing information: Rybelsus (semaglutide) tablets, for oral use