Lidocaine: study card

Lidocaine — Amide local anesthetic. Study the mechanism, listed uses and warnings from the US label on one sourced card.

Generic name: Lidocaine
Class: Amide local anesthetic
Mechanism: Amide local anesthetic suggested to stabilize neuronal membranes by inhibiting ionic fluxes needed to initiate and conduct impulses.
Used for: Relief of post-herpetic neuralgia pain in adults
Common side effects: Application site irritation; Erythema; Burning sensation; Pruritus
Warnings: Accidental exposure (children, pets); Overexposure: large area, heat, broken skin; Methemoglobinemia
Interactions: Class I antiarrhythmics; Other local anesthetics; Drugs linked to methemoglobinemia

Brand questions use only name pairings verified against the linked product source. Unverified pairings are withheld from these questions; the other study content remains available.

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Label date: 20251006 · For learning, not clinical decisions. US label and brand information; always consult the current source.

Source snapshot checked: 2026-10-21. The source document and selected fields were compared. The complete card has not had an independent clinical review.

Practice

Pronunciation

Lidocaine: LYE-doe-kane

Pronunciation is shown for the US English generic name.

Body system

Pain · 16 Drug cards

Compare with related cards

Diclofenac (topical)

Same body system: Pain

Mechanism: The mechanism is not completely understood but involves inhibition of COX-1 and COX-2. Diclofenac inhibits prostaglandin synthesis in vitro; reduced peripheral prostaglandins may contribute to its analgesic and anti-inflammatory effects.

On both cards: Common side effects — Erythema; Pruritus

Only on the Diclofenac (topical) card: Used for — Pain of osteoarthritis of the knee · Common side effects — Application site dryness; Exfoliation · Warnings — Hepatotoxicity; Heart failure and edema; Renal toxicity · Interactions — Anticoagulants (warfarin); Drugs interfering with hemostasis (SSRIs)

An item counts as shared only when both cards use the same wording. If a card does not list an item, that is not a statement that the effect never occurs.