Lidocaina Cloridrato Fisiopharma (Lidocaine Hydrochloride)

Lidocaine Hydrochloride acts on peripheral nerve membranes to produce temporary loss of sensation in targeted areas.

• Infiltration procedures: provides localized numbness for minor surgical or diagnostic interventions.
• Peripheral nerve block: enables perineural anesthesia for limb or regional surgeries.
• Minor surgical procedures: supplies rapid, controllable analgesia for suturing, biopsies, and dental work.

• Lidocaine Hydrochloride reversibly binds to voltage‑gated sodium channels on neuronal membranes, stabilizing the inactive state of the channel. This blocks the influx of sodium ions required for depolarization, preventing initiation and propagation of nerve impulses and thereby producing a localized anesthetic effect.

Lidocaine Hydrochloride may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

• Burning or stinging at the injection site
• Tingling or numbness extending beyond the target area
• Redness or mild swelling at the site
• Dizziness or light‑headedness
• Nausea or mild headache

Serious or Rare Side Effects

• Central nervous system toxicity (seizures, loss of consciousness)
• Cardiovascular effects (arrhythmias, hypotension, cardiac arrest)
• Methemoglobinemia
• Severe allergic reactions (anaphylaxis, angioedema)
• Respiratory depression
• Persistent neurologic deficits (rare).

Before using Lidocaina Cloridrato Fisiopharma, clinicians should consider several safety measures.

• Allergy assessment: confirm no known hypersensitivity to amide‑type local anesthetics.
• Cardiac monitoring: observe patients with pre‑existing heart disease or arrhythmias.
• Dose limitation: avoid exceeding recommended maximum cumulative dose for the procedure.
• Concomitant CNS depressants: use caution when combined with other agents that depress the central nervous system.
• Pediatric use: adjust dose carefully based on weight and clinical judgment.
• Store at ambient temperature: keep below 25 °C, in the original container, protected from moisture and direct sunlight.

Lidocaine may interact with other medications, altering its safety profile.

Major Interactions (Avoid)

• Class I antiarrhythmics (e.g., quinidine, procainamide): increased risk of cardiotoxicity.
• CYP3A4 inhibitors (e.g., ketoconazole, erythromycin): may raise systemic lidocaine levels.
• Beta‑blockers: can potentiate bradycardia and hypotension.

Moderate Interactions (Monitor Closely)

• General anesthetics (e.g., propofol, volatile agents): additive central nervous system depression.
• Diuretics (e.g., furosemide): may affect plasma concentration of lidocaine.
• Other local anesthetics: cumulative toxicity risk when used together.