Xylocaine 2% Inj, 10ml

Lidocaine stabilizes the neuronal membrane by inhibiting the ionic fluxes required for the initiation and conduction of impulses, thereby effecting local anesthetic action. It blocks voltage-gated sodium channels in the neuronal cell membrane, preventing the influx of sodium ions and thus inhibiting depolarization and nerve impulse propagation.

Urgent Side Effects: Seek Medical Help Right Away

Although rare, this medication can cause severe and potentially life-threatening side effects. If you experience any of the following symptoms, contact your doctor or seek medical attention immediately:

Allergic Reaction: Rash, hives, itching, red, swollen, blistered, or peeling skin with or without fever, wheezing, tightness in the chest or throat, trouble breathing, swallowing, or talking, unusual hoarseness, or swelling of the mouth, face, lips, tongue, or throat.
Methemoglobinemia: A blue or gray color of the lips, nails, or skin, irregular heartbeat, seizures, severe dizziness or fainting, severe headache, excessive sleepiness, feeling tired or weak, or shortness of breath. This rare condition can be life-threatening if left untreated.
Acidosis (Too Much Acid in the Blood): Confusion, rapid breathing, rapid heartbeat, irregular heartbeat, severe stomach pain, nausea, vomiting, excessive sleepiness, shortness of breath, or feeling very tired or weak.
Respiratory Problems: Trouble breathing, slow breathing, or shallow breathing.
Neurological Symptoms: Feeling lightheaded, sleepy, confused, or having blurred vision.
Cardiovascular Symptoms: Slow heartbeat.
Other Severe Symptoms: Feeling nervous and excitable, trouble speaking, burning, numbness, or tingling sensations, restlessness, anxiety, changes in vision, ringing in the ears, dizziness or fainting, severe headache, twitching, shakiness, seizures, feeling hot or cold, metallic taste, chest pain, or mood changes.

Additional Side Effects of Spinal Injection:

If you receive this medication via spinal injection, you may experience:

Erectile dysfunction
Loss of mobility
Loss of bowel or bladder control
* Urination difficulties

Other Possible Side Effects:

Like all medications, this drug can cause side effects, although many people may not experience any or may only have mild symptoms. If you have any side effects that bother you or do not go away, contact your doctor for advice.

Reporting Side Effects:

You can report any side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch. If you have questions about side effects, consult your doctor for medical advice.

Before Taking This Medication: Important Information to Share with Your Doctor

To ensure safe treatment, inform your doctor of the following:

Any allergies you have to this medication, its components, or other substances, including foods and drugs. Describe the allergic reaction you experienced, including any symptoms.
If you are scheduled to receive this medication via spinal injection, notify your doctor if you have:
+ Heart block
+ Severe bleeding
+ Severe infection
+ An infection at the injection site

It is essential to disclose all your medications, including prescription and over-the-counter drugs, natural products, and vitamins, as well as any health problems you have. This will help your doctor and pharmacist determine if it is safe to take this medication with your other treatments. Do not start, stop, or adjust the dosage of any medication without first consulting your doctor.

Important Warnings and Cautions

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication.

Risk of Methemoglobinemia
A severe blood disorder called methemoglobinemia has been associated with drugs like this one. Your risk may be increased if you have:
- Glucose-6-phosphate dehydrogenase (G6PD) deficiency
- Heart problems
- Lung problems
- Are taking certain other medications
- Are an infant younger than 6 months of age
If you have a history of methemoglobinemia, notify your doctor.

Sulfite Allergy
If you are allergic to sulfites, consult with your doctor, as some products may contain sulfites.

Post-Treatment Precautions
Avoid driving and other activities that require alertness until the effects of this medication have worn off and you feel fully awake. If you are discharged before the numbness has resolved, take precautions to protect the treated area from injury until sensation returns.

Special Considerations
- If you are 65 or older, use this medication with caution, as you may be more susceptible to side effects.
- If the patient is a child, use this medication with caution, as the risk of certain side effects may be higher in children.
- If you are pregnant, plan to become pregnant, or are breastfeeding, discuss the benefits and risks with your doctor.

Spinal Injection
If this medication is administered into the spine, it may cause temporary loss of feeling and motor function in the lower half of your body. Do not attempt to get out of bed or perform other activities until normal feeling and motor function have returned.

Mouth and Dental Procedures
Do not eat while your mouth feels numb, as you may inadvertently bite your tongue.

• Not typically contraindicated for local use, but caution with severe heart block (for IV use).

• Antiarrhythmics (e.g., Class I antiarrhythmics like mexiletine, tocainide): Increased risk of cardiac depression and CNS toxicity.
• Beta-blockers (e.g., propranolol, metoprolol): May decrease hepatic blood flow, reducing lidocaine clearance and increasing toxicity risk.
• Cimetidine: Inhibits lidocaine metabolism, increasing plasma levels and toxicity risk.
• Succinylcholine: May prolong neuromuscular blockade.

• Other local anesthetics: Additive systemic toxicity.
• CYP1A2/CYP3A4 inhibitors (e.g., macrolide antibiotics, azole antifungals, protease inhibitors): May increase lidocaine levels.
• CYP1A2/CYP3A4 inducers (e.g., rifampin, phenytoin, carbamazepine): May decrease lidocaine levels.
• Phenytoin: May increase lidocaine metabolism; also, additive cardiac effects.
• Skeletal muscle relaxants: May enhance or prolong effects.

• Not specifically identified for minor interactions with significant clinical impact for single-dose local anesthesia.

• Lightheadedness
• Dizziness
• Tinnitus
• Perioral numbness
• Metallic taste
• Blurred vision
• Tremors
• Muscle twitching
• Seizures
• Drowsiness
• Unconsciousness
• Respiratory depression/arrest
• Bradycardia
• Hypotension
• Cardiac arrhythmias
• Cardiac arrest

Lidocaine is classified as Pregnancy Category B. Studies in animals have not shown harm to the fetus, and there are no adequate and well-controlled studies in pregnant women. It is generally considered safe for use during pregnancy when clinically indicated and administered at appropriate doses.

Lidocaine is excreted into breast milk in small amounts. The amount ingested by the infant is typically very low and unlikely to cause adverse effects. It is considered compatible with breastfeeding (Lactation Risk Category L2).

Pediatric patients, especially infants and young children, are more susceptible to systemic toxicity due to differences in metabolism, distribution, and body surface area to weight ratio. Dosing must be carefully calculated on a mg/kg basis, and the lowest effective dose should be used. Close monitoring for signs of toxicity is crucial.

Elderly patients may be more susceptible to the systemic effects of lidocaine due to age-related decreases in hepatic blood flow, renal function, and plasma protein binding. Reduced doses and careful monitoring are recommended to minimize the risk of toxicity.

• Always aspirate prior to injection to ensure the needle is not in a blood vessel, which can lead to rapid systemic absorption and toxicity.
• Use the lowest effective concentration and volume to achieve the desired anesthetic effect.
• The addition of epinephrine (vasoconstrictor) prolongs the duration of action and reduces systemic absorption, allowing for higher total doses while minimizing systemic toxicity, but should be avoided in areas with end-arterial circulation (e.g., fingers, toes, nose, penis, ears) due to risk of ischemia.
• Monitor patients closely for signs of systemic toxicity (CNS and cardiovascular) during and after administration, especially with large volumes or highly vascular injection sites.
• Be prepared with resuscitation equipment and medications (e.g., lipid emulsion for severe systemic toxicity) when administering large doses or in high-risk patients.
• Lidocaine is an amide-type local anesthetic; patients with a history of allergy to ester-type local anesthetics (e.g., procaine) may tolerate lidocaine, but cross-reactivity is rare.

• Bupivacaine (longer acting amide local anesthetic)
• Ropivacaine (amide local anesthetic, less cardiotoxic than bupivacaine)
• Mepivacaine (intermediate acting amide local anesthetic)
• Procaine (ester local anesthetic, shorter acting)
• Chloroprocaine (ester local anesthetic, very short acting)
• Topical anesthetics (e.g., lidocaine cream, patch, spray for superficial anesthesia)

If your symptoms or health problems persist or worsen, it is essential to contact your doctor for further guidance. To ensure safe use, do not share your medication with others, and never take someone else's medication. Store all medications in a secure location, out of reach of children and pets, to prevent accidental ingestion. Dispose of unused or expired medications properly; do not flush them down the toilet or pour them down the drain unless instructed to do so by a healthcare professional or pharmacist. If you are unsure about the proper disposal method, consult your pharmacist, as they may be aware of drug take-back programs in your area. Additionally, some medications may come with a separate patient information leaflet; check with your pharmacist for more information. If you have any questions or concerns about your medication, discuss them with your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately contact your local poison control center or seek medical attention. Be prepared to provide information about the medication taken, the amount, and the time it occurred to ensure prompt and effective treatment.