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Lidocaine/tetracaine patch

East Carolina University · FDA-approved active Small molecule

Lidocaine and tetracaine are local anesthetics that block sodium channels in nerve fibers, preventing pain signal transmission at the site of application.

Lidocaine and tetracaine are local anesthetics that block sodium channels in nerve fibers, preventing pain signal transmission at the site of application. Used for Topical anesthesia for minor surgical procedures, Dermatological procedures requiring local anesthesia.

At a glance

Generic nameLidocaine/tetracaine patch
Also known asSynera patch, Ralydan, Rapydan, Synera, 76667213
SponsorEast Carolina University
Drug classLocal anesthetic combination
TargetVoltage-gated sodium channels
ModalitySmall molecule
Therapeutic areaPain management / Anesthesia
PhaseFDA-approved

Mechanism of action

Both lidocaine and tetracaine work by inhibiting voltage-gated sodium channels in sensory nerve endings, which prevents depolarization and conduction of pain signals. The combination patch delivers both agents transdermally to provide rapid local anesthesia. This dual-agent formulation is designed to provide faster onset and more effective topical anesthesia compared to single-agent products.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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