What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

Lidoderm Patch (Lidocaine)

Also Known as Versatis medicated plasters

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Brand

Lidoderm Patch (Lidocaine)

Prescription Required

Strength
Qty
5%

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  • Product Details

    Description

    Your doctor may prescribe Lidoderm for the treatment of minor pain, particularly nerve pain. It is indicated for the treatment of pain associated with post-herpetic neuralgia. Post-herpetic neuralgia is long-lasting pain associated with shingles.

    Lidoderm patches are a topical medication placed directly on the skin.

    Lidoderm patches work by blocking the initiation and conduction of nerve impulses. It decreases the membrane permeability of neurons to sodium ions, which blocks nerve signals.

    Fact Table

    Formula

    C14H22N2O

    License

    US FDA, EU EMA

    Bioavailability

    35%

    Legal status

    US: OTC / Rx-only

    Chemical Name

    Lidocaine

    Elimination half-life

    1.5 h to 2 h

    Dosage (Strength)

    5%

    Pregnancy

    No Known Risk

    Brands

    Lidoderm Patch, Xylocaine, Ztlido

    Protein binding

    More than 65%

    PubChem CID

    3676

    MedlinePlus

    a682701

    ChEBI

    6456

    ATC code

    C01BB01

    DrugBank

    DB00281

    KEGG

    D00358

    Routes of administration

    Intravenous, subcutaneous, topical, by mouth

    Directions

    Apply Lidoderm patches to the affected area of the skin for 12 hours. Remove the patch for 12 hours before reapplying to the same site.

    After removing a used patch, fold the patch onto itself and discard it in a place that is not accessible to children or animals.

    Ingredients

    The active ingredient in Lidoderm patches is lidocaine. 

    Interactions

    Common drug-drug interactions with this medication can include:

    • Antiarrhythmic Agents
    • Cimetidine
    • Dapsone
    • Local Anesthetics
    • Methemoglobinemia Associated Agents
    • Nitric Oxide
    • Prilocaine
    • Sodium Nitrite

    Cautions

    Only apply Lidoderm patches to intact areas of the skin.

    Do not wear Lidoderm patches for longer than prescribed. Doing so may result in high levels of lidocaine absorbing into the bloodstream and increasing the risk of side effects.

    Lidoderm patches may cause irritation at the site of application.

    Side Effects

    Common adverse reactions to this medication may include:

    • Anaphylactoid Shock
    • Angioedema
    • Application Site Burning
    • Application Site Erythema
    • Application Site Vesicles
    • Apprehension
    • Asthenia
    • Blurred Vision
    • Bradycardia
    • Bronchospasm
    • Bruise
    • Central Nervous System Depression
    • Circulatory Shock
    • Confusion
    • Dermatitis
    • Diplopia
    • Disorientation
    • Dizziness
    • Drowsiness
    • Dysgeusia
    • Dyspnea
    • Euphoria
    • Excitement
    • Exfoliation Of Skin
    • Flushing
    • Headache
    • Hyperesthesia
    • Hypersensitivity Reaction
    • Hypoesthesia
    • Hypotension
    • Laryngospasm
    • Local Discoloration
    • Local Irritation
    • Localized Warm Feeling
    • Loss Of Consciousness
    • Metallic Taste
    • Methemoglobinemia
    • Nervousness
    • Numbness
    • Pain
    • Papule
    • Paresthesia
    • Respiratory Depression
    • Seizure
    • Sensation Disorder
    • Sensation Of Cold
    • Shock
    • Skin Blister
    • Skin Depigmentation
    • Skin Edema
    • Skin Erosion
    • Tinnitus
    • Tremor
    • Twitching
    • Urticaria

    References

    Lidoderm patch [package insert]. Malvern, PA: Endo Pharmaceuticals Inc.; 2015.


    Dr Conor Sheehy
    About Dr. Conor Sheehy (Page Author)

    Dr. Sheehy (BSc Molecular Biology, PharmD) works a clinical pharmacist specializing in cardiology, oncology, and ambulatory care. He’s a board-certified pharmacotherapy specialist (BCPS), and his experience working one-on-one with patients to fine tune their medication and therapy plans for optimal results makes him a valuable subject matter expert for our pharmacy. Read More....


    IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

    Product Code : 11554

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