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What are some fast-acting anesthetics?

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The time to onset of action for anesthetic drugs depends on a variety of factors. You knew this would not be a quick answer! I'll give a brief overview and then I can follow up with more specific questions. Knowing why you want to know this information will help me tailor it to you, the audience. read more

Some agents administered intramuscularly also work in approximately that timeframe, ketamine being an example of a rapidly acting IM anesthetic. Inhaled or gas anesthetics typically take significantly longer to work due to admixture with the gas contents of the lungs which are not completely exchanged in any one breath. read more

Ester local anesthetics (e.g., procaine, amethocaine, cocaine, benzocaine, tetracaine) are generally unstable in solution and fast-acting, and allergic reactions are common. Amide local anesthetics (e.g., lidocaine, prilocaine, bupivicaine, levobupivacaine, ropivacaine, mepivacaine, dibucaine and etidocaine) are generally heat-stable, with a long shelf life (around 2 years). read more

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