This course gives anesthesia providers a clear, practical roadmap to using local anesthetics safely and effectively—from ion channels to real-world blocks. You’ll review how pKa, lipid solubility, and protein binding shape onset, potency, and duration; compare the clinical profiles of bupivacaine, ropivacaine, lidocaine, and mepivacaine (including dosing, contraindications, and obstetric considerations); and sharpen your recognition and management of local anesthetic systemic toxicity, including lipid rescue.