L-M-x 5% Cream 30gm

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 depolarization and propagation of action potentials.

Urgent Side Effects: Seek Medical Help Right Away

While rare, some people may experience severe and potentially life-threatening side effects when taking this medication. If you experience any of the following symptoms, contact your doctor or seek medical attention immediately:

Signs of an allergic reaction, such as:
+ 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
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of acidosis (too much acid in the blood), such as:
+ Confusion
+ Fast breathing
+ Fast heartbeat
+ Irregular heartbeat
+ Severe stomach pain, nausea, or vomiting
+ Excessive sleepiness
+ Shortness of breath
+ Feeling extremely tired or weak
Signs of methemoglobinemia, a rare but potentially life-threatening condition, such as:
+ Blue or gray discoloration of the lips, nails, or skin
+ Irregular heartbeat
+ Seizures
+ Severe dizziness or fainting
+ Severe headache
+ Excessive sleepiness
+ Feeling extremely tired or weak
+ Shortness of breath
Respiratory problems, such as:
+ Trouble breathing
+ Slow breathing
+ Shallow breathing
Severe numbness and tingling
Feeling lightheaded, sleepy, confused, or experiencing blurred vision
Seizures
Changes in vision
Feeling nervous and excitable
Dizziness or fainting
Ringing in the ears
Nausea or vomiting
Feeling hot or cold
Shakiness
Twitching
Slow heartbeat
Chest pain
Rectal bleeding or pain

Other Possible Side Effects

Like all medications, this drug can cause side effects. Many people may not experience any side effects or may only have mild ones. If you experience any of the following side effects or any other symptoms that bother you or do not go away, contact your doctor:

Irritation at the site of application
Swelling
Redness
Changes in skin color

This is not an exhaustive list of possible side effects. If you have questions or concerns about side effects, contact your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.

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

It is essential to inform your doctor about the following:

Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the symptoms you experienced as a result of the allergy.
The presence of an infection at the site where this medication will be applied.
Any broken skin or open wounds at the site where the medication will be used.
If you have swollen skin, numbness, or an inability to feel pain at the site where the medication will be applied.

This list is not exhaustive, and it is crucial to discuss all your medications (including prescription, over-the-counter, natural products, and vitamins) and health conditions with your doctor and pharmacist. They will help determine if it is safe to take this medication in conjunction with your other medications and health issues. Never start, stop, or adjust the dosage of any medication without first consulting your doctor.

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

A rare but serious blood condition called methemoglobinemia can occur with the use of this drug. Your risk may be increased if you have a deficiency of the enzyme glucose-6-phosphate dehydrogenase (G6PD), heart problems, or lung problems. Additionally, the risk may be higher when taking certain other medications or in infants under 6 months of age. If you have a history of methemoglobinemia, be sure to discuss this with your doctor.

Before using any other medications or skin products, including soaps, consult with your doctor. Do not use this medication for a longer period than prescribed by your doctor. While your skin is numb, avoid scratching or rubbing the area, and do not expose it to extreme temperatures.

Apply this medication only to intact skin, unless your doctor instructs you to use it on cuts, scrapes, or damaged skin. Avoid using heat sources such as sunlamps, tanning beds, heating pads, electric blankets, heat lamps, saunas, hot tubs, or heated waterbeds. Also, avoid taking long, hot baths or sunbathing, as this can cause your body temperature to rise and lead to excessive absorption of the medication.

If this medication is accidentally swallowed, immediately contact a doctor or a poison control center. Note that different brands of this medication may be suitable for children of various ages, so consult with your doctor before administering it to a child.

When using this medication in children, exercise caution, as they may be at a higher risk for certain side effects. If you are 65 or older, use this medication with caution, as you may be more susceptible to side effects.

If you are pregnant, planning to become pregnant, or breastfeeding, discuss the potential benefits and risks of using this medication with your doctor.

• Class I Antiarrhythmics (e.g., tocainide, mexiletine): Increased risk of cardiac adverse effects due to additive effects on cardiac conduction.
• Other Local Anesthetics: Increased risk of systemic toxicity (CNS, cardiovascular) due to additive effects.

• Beta-blockers (e.g., propranolol): May decrease hepatic blood flow, potentially reducing lidocaine clearance and increasing systemic levels.
• Cimetidine: May inhibit lidocaine metabolism, increasing systemic levels.
• Phenytoin: May alter lidocaine metabolism.
• Succinylcholine: Prolonged neuromuscular blockade.

• Lightheadedness
• Dizziness
• Drowsiness
• Confusion
• Disorientation
• Tinnitus (ringing in ears)
• Blurred vision
• Numbness or tingling around the mouth
• Tremors
• Muscle twitching
• Seizures
• Bradycardia (slow heart rate)
• Hypotension (low blood pressure)
• Cardiac arrest (severe toxicity)
• Methemoglobinemia (rare, cyanosis, shortness of breath, fatigue)

Lidocaine is classified as Pregnancy Category B. Animal studies have not shown harm to the fetus, but there are no adequate and well-controlled studies in pregnant women. Use only if clearly needed and the potential benefits outweigh the potential risks.

Lidocaine is excreted in breast milk in small amounts. The amount transferred to the infant is generally considered too small to cause adverse effects when used topically at recommended doses. L2 (likely compatible) classification.

Use with extreme caution, especially in infants and young children (under 3 months). Children are more susceptible to systemic toxicity due to higher surface area to body weight ratio and thinner skin, leading to increased absorption. Dosing must be carefully calculated based on weight and surface area, and application time/area strictly limited. Not recommended for children under 3 months.

Use with caution. Elderly patients may be more susceptible to systemic toxicity due to decreased hepatic and renal function, reduced protein binding, and potential for underlying cardiac disease. Start with lower doses and monitor closely for adverse effects.

• Always apply to intact skin. Application to broken, inflamed, or mucous membranes significantly increases systemic absorption and risk of toxicity.
• Occlusive dressings (e.g., plastic wrap) enhance absorption and should only be used as directed, and for the minimum effective duration.
• Be aware of the total amount of lidocaine applied, especially when treating large areas or using multiple lidocaine-containing products concurrently.
• Systemic toxicity symptoms can be delayed. Monitor patients for several hours after application, particularly if large doses or areas were treated.
• Patients should be advised not to scratch or rub the treated area while it is numb, to avoid accidental injury.
• Methemoglobinemia is a rare but serious side effect, especially in infants or patients with G6PD deficiency. Look for cyanosis, shortness of breath, and fatigue.

• Benzocaine topical
• Bupivacaine topical (less common)
• Cryoanesthesia (ice packs)
• Non-pharmacological pain management techniques

If your symptoms or health issues persist or worsen, it is essential to contact your doctor for further guidance. To ensure your safety, never share your medication with others or take someone else's medication. Some medications may come with an additional patient information leaflet, so it's a good idea to check with your pharmacist. If you have any questions or concerns about this medication, don't hesitate to discuss them with your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek emergency medical attention. When seeking help, be prepared to provide information about the medication taken, the amount, and the time it happened.