Tetracaine is a local anesthetic of the ester type, used to numb tissue in a specific area. It works by blocking sodium channels in neuronal membranes, preventing the generation and conduction of nerve impulses. Tetracaine is known for its high potency and long duration of action compared to other local anesthetics.
It is commonly used in topical, ophthalmic, and spinal (intrathecal) formulations.
Indications include:
∙ Local anesthesia for eye, nose, and throat procedures (topical)
∙ Spinal anesthesia (as tetracaine hydrochloride)
∙ Minor skin procedures (creams or gels)
∙ Diagnostic and surgical ophthalmic procedures
Parent: Tetracaine
Parent: Tetracaine
Parent: Tetracaine / Tetracaine Hydrochloride
Parent: Tetracaine
Impurities in tetracaine can result from synthetic processes involving esterification and amine derivatization, as well as from degradation during storage, especially under hydrolytic or oxidative conditions. Impurity control is critical due to its parenteral and mucosal use, and must meet ICH Q3A/B and USP/EP standards.
Process-Related Impurities
Degradation Impurities
Elemental Impurities
Analytical Techniques for Impurity Detection
Tetracaine is used to provide local or regional anesthesia during short surgical, diagnostic, or therapeutic procedures involving the eyes, skin, or spinal region.
It blocks sodium ion channels on nerve cells, stopping nerve signal conduction and resulting in temporary loss of sensation.
Yes, it is widely used for eye anesthesia, but repeated or prolonged use can damage corneal tissues. It should be used under medical supervision.
Yes. Tetracaine is sensitive to hydrolysis (especially in aqueous environments) and should be stored in cool, dry, and light-protected conditions to maintain stability.
