Lidocaine (topical)

Category: topical

Aliases: Aspercreme, LMX-4

Pharmacological Mechanism

Topical local anesthetic — Na+ channel blocker. OTC at 4% strength, Rx at 5% (post-herpetic neuralgia patches). Different formulation from oral / IV lidocaine.

Half-Life (t½)

TD: 6h

Dosing Guidelines

• TD: Typical 200mg (Range: 40 - 700 mg)

Target Organ Systems

• nervous
• integumentary