Which local anesthetic is preferred for patients with a high risk of allergies?

When considering local anesthetics for patients with a high risk of allergies, mepivacaine is often preferred due to its lower potential for allergic reactions compared to some other anesthetics. Mepivacaine does not contain a vasoconstrictor, which can sometimes contribute to hypersensitivity and allergic reactions in susceptible individuals.

Additionally, mepivacaine has a simpler chemical structure that is less likely to trigger an allergic response. While lidocaine is commonly used and generally well-tolerated, it has been associated with some allergic reactions, particularly in patients who may have sensitivities to preservatives or additives present in certain formulations.

Bupivacaine and articaine, while effective anesthetics, may have a more complex formulation that could heighten the risk of allergic reactions in sensitive patients. Therefore, mepivacaine stands out as a safer choice for those who may be prone to allergies, making it the preferred option in this scenario.