Lignocaine Injection 1%

About Lignocaine Injection 1%

Lignocaine Injection 1% Uses

• Local infiltration anesthesia before minor skin and soft tissue surgery
• Dental anesthesia for tooth extractions and minor oral procedures
• Nerve block anesthesia for hand, foot and limb procedures
• Wound suturing and minor incision and drainage procedures
• Numbing skin before injections, biopsies or catheter insertion

Lignocaine Injection 1% Benefits

• Fast onset of numbing, usually within a few minutes of injection
• Reliable pain control that allows minor procedures without general anesthesia
• Lower systemic risk than general anesthesia for short outpatient procedures
• Widely available and cost effective for routine clinical use in Pakistan
• Predictable duration of action that suits short day care procedures

What Experts Say

Lignocaine belongs to the amide class of local anesthetics and works by blocking voltage gated sodium channels in nerve fibers. This stops the nerve from sending pain signals to the brain from the treated area. Clinicians favor amide anesthetics like lignocaine over older ester types because they carry a lower risk of allergic reaction.

Doctors calculate the dose carefully based on body weight and the site of injection, since lignocaine toxicity is dose dependent. Total dose without adrenaline is usually kept under 3 mg per kg of body weight to reduce the chance of cardiac or central nervous system toxicity. Aspiration before injection is a standard safety step to avoid accidental intravascular administration.

Physicians in Pakistan use plain 1% lignocaine for most minor outpatient procedures where a short duration of action is sufficient. Monitoring for early signs of toxicity, such as tingling around the mouth or ringing in the ears, remains a routine part of safe administration in any clinical setting.

Drug Class

• Amide type local anesthetic

Lignocaine Injection 1% formula

• Lignocaine Hydrochloride

Available forms

• Injection

How to use Lignocaine Injection 1%?

• To be administered only by a qualified doctor or dentist in a clinical setting
• Dose and volume are calculated by the physician based on the procedure and the patient's body weight
• Injected directly into or around the area that needs to be numbed
• Aspiration is performed before injection to confirm the needle is not inside a blood vessel
• Onset of numbness usually occurs within a few minutes of injection
• Not intended for self administration at home

Drug Interactions

• Other Local Anesthetics: Combining with additional lignocaine or a different local anesthetic raises the total dose and the risk of toxicity.
• Antiarrhythmic Drugs: Medicines such as amiodarone or mexiletine can add to lignocaine's effect on heart rhythm and conduction.
• Beta Blockers: Drugs like propranolol can slow lignocaine clearance from the liver and increase blood levels.
• Cimetidine: Can reduce liver metabolism of lignocaine, raising the risk of toxicity.
• Other CNS Depressants: Sedatives or opioids used at the same time can add to dizziness and drowsiness.

Risks and warnings

• Cardiac Toxicity: High doses or accidental intravenous injection can cause slow heart rate, low blood pressure and, rarely, cardiac arrest.
• CNS Toxicity: Overdose can cause dizziness, tingling around the mouth, ringing in the ears, blurred vision, tremors or seizures.
• Allergy Risk: Rare true allergy to amide anesthetics can occur, so tell your doctor about any past reaction to numbing injections.
• Injection Site: Accidental injection into a blood vessel must be avoided through careful aspiration before injecting.
• Heart Disease: Use with caution in patients with heart block, arrhythmia or severe heart failure.
• Liver Impairment: Patients with significant liver disease clear lignocaine more slowly and need a reduced dose.
• Pregnancy And Breastfeeding: Use only if the treating doctor decides the benefit outweighs any potential risk.

Lignocaine Injection 1% Side Effects

• Pain, redness or swelling at the injection site
• Temporary numbness spreading beyond the intended area
• Dizziness or lightheadedness
• Tingling sensation around the mouth or tongue
• Ringing in the ears
• Blurred vision
• Nausea
• Low blood pressure or slow heart rate
• Muscle twitching or tremors with high doses
• Seizures or loss of consciousness in severe toxicity, requiring emergency care
• Allergic reaction with rash, swelling or difficulty breathing, rare with amide anesthetics

Storage Conditions

• Store below 25 degrees Celsius, away from direct sunlight
• Keep ampoules in their original box until ready for use
• Do not freeze
• Discard any ampoule once opened, do not reuse a partially used ampoule
• Keep out of reach of children
• Inspect the solution before use and discard if discolored or cloudy