Description

Clinical Description

Lidocaine 2% 40mg (10 × 2mL) is a sterile, prescription-only injectable local anaesthetic containing 40 mg of lidocaine hydrochloride in each 2 mL ampoule (20 mg/mL). It belongs to the amide class of local anaesthetics and produces reversible loss of sensation by blocking voltage-gated sodium channels, thereby preventing the transmission of nerve impulses.

This formulation is widely used by qualified healthcare professionals for local infiltration, peripheral nerve block and other approved regional anaesthetic techniques in accordance with the manufacturer’s Summary of Product Characteristics (SmPC). In medical aesthetics, lidocaine may be used to improve patient comfort during selected procedures when clinically appropriate and within authorised prescribing guidance. It is supplied as a sterile solution for injection and should only be administered by trained medical professionals familiar with local anaesthetic techniques, dosage calculations and emergency management of potential adverse reactions.

What Lidocaine 2% 40mg (10 × 2mL) Is Similar To

Lidocaine hydrochloride injection belongs to the amide local anaesthetic class and is comparable to other injectable lidocaine formulations, including Lidocaine 1% Injection and higher-volume Lidocaine 2% 100mg (5mL) presentations. These products share the same mechanism of action by temporarily blocking sodium channels within peripheral nerves to produce reversible local anaesthesia.

The principal difference between formulations lies in concentration and presentation. While both 2% products contain 20 mg/mL, this presentation provides a total dose of 40 mg per ampoule, making it suitable for procedures requiring a smaller administered volume. Selection of formulation depends on the intended clinical procedure and dosing requirements rather than efficacy alone.

Unlike dermal fillers, skin boosters or regenerative injectables such as Profhilo®, lidocaine has no volumising or tissue-remodelling properties. Its function is solely to provide temporary local anaesthesia.

This comparison is provided for clinical orientation only and does not imply interchangeability.

Treatment Areas / Indications

According to the manufacturer’s prescribing information, Lidocaine Hydrochloride Injection may be indicated for local or regional anaesthesia in appropriately selected procedures, including:

• Local infiltration anaesthesia
• Peripheral nerve block
• Minor surgical procedures
• Dermatological procedures
• Dental procedures
• Other approved regional anaesthetic techniques

Usage / Administration (IFU-Only)

This medicine should be administered only by qualified healthcare professionals experienced in local anaesthetic techniques and under appropriate aseptic conditions.

The manufacturer advises that dosage should be individualised according to:

• Patient age
• Body weight
• Clinical condition
• Injection site
• Anaesthetic technique
• Expected duration of the procedure

Some practitioners use injectable lidocaine before aesthetic treatments to improve procedural comfort; this approach is not specifically described within the manufacturer’s official prescribing information.

Ingredient List

Active Ingredient

• Lidocaine Hydrochloride 20 mg/mL
• Total content: 40 mg per 2 mL ampoule

Excipients

• Sodium chloride
• Sodium hydroxide (pH adjustment)
• Hydrochloric acid (pH adjustment)
• Water for injections

Hyaluronic acid concentration: Not applicable.

Contains lidocaine: Yes – 2%.

Presentation & Longevity

Presentation

• Box containing 10 sterile glass ampoules
• 2 mL per ampoule
• Concentration: 2% (20 mg/mL)
• Total content: 40 mg lidocaine hydrochloride per ampoule

Duration of Anaesthetic Effect

The duration of anaesthesia depends on:

• Total dose administered
• Injection technique
• Injection site
• Local blood supply
• Individual patient factors

The manufacturer does not provide a single fixed duration applicable to all procedures.

Safety Notes / Contraindications

Lidocaine injection should only be administered where appropriate monitoring equipment and resuscitation facilities are immediately available.Contraindications include

• Known hypersensitivity to lidocaine, amide-type local anaesthetics or any formulation component.
• Certain severe cardiac conduction disorders unless pacing equipment is available.
• Situations where the selected regional anaesthetic technique is contraindicated.

Precautions include

• Careful dose calculation to minimise systemic toxicity.
• Caution in patients with severe hepatic impairment.
• Use with care in individuals with significant cardiovascular disease or reduced protein binding.

Regulatory Status

• Prescription Only Medicine (POM) in the United Kingdom.
• Manufactured in accordance with applicable pharmaceutical quality standards.
• Marketing authorisation and product registration should be verified using the latest UK Summary of Product Characteristics (SmPC).

FAQ

1. What is Lidocaine 2% 40mg (10 × 2mL) used for?

Lidocaine 2% Injection is used to provide temporary local or regional anaesthesia during a variety of medical procedures. It reduces pain by blocking nerve impulse transmission at the site of administration. The exact indication depends on the authorised anaesthetic technique selected by the healthcare professional and the patient’s clinical requirements.

2. How does Lidocaine work?

Lidocaine is an amide local anaesthetic that reversibly blocks voltage-gated sodium channels within nerve fibres. This prevents electrical impulses from travelling along sensory nerves, temporarily interrupting pain transmission until the medicine is metabolised and normal nerve conduction returns.

3. Can this product be used in aesthetic medicine?

Qualified clinicians may use injectable lidocaine to improve comfort during selected aesthetic procedures when clinically appropriate. However, the manufacturer’s prescribing information does not include dedicated protocols for cosmetic applications. Administration should always comply with approved prescribing guidance and local clinical governance.

4. How long does the anaesthetic effect last?

The duration of anaesthesia varies according to the administered dose, anatomical location, vascularity of the tissue and anaesthetic technique used. Because these variables differ considerably, the manufacturer does not specify a universal duration applicable to every procedure.

5. What is the difference between the 2mL and 5mL Lidocaine 2% presentations?

Both formulations contain the same concentration of lidocaine hydrochloride (20 mg/mL). The primary difference is the total amount of active ingredient supplied per ampoule. The 2 mL presentation contains 40 mg, whereas the 5 mL presentation contains 100 mg, allowing clinicians to choose the most appropriate presentation for the planned procedure while remaining within recommended dosing guidelines.