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.

Flector Patch (Diclofenac Epolamine)


Flector Patch (Diclofenac Epolamine)

Prescription Required


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  • Product Details


    Your healthcare team may prescribe a Flector patch to treat acute pain. It is typically prescribed for muscle pain like strains, sprains, and contusions. The Flector patch works by blocking prostaglandins, which are a chemical signal in the body. Doing so reduces pain and inflammation. 

    Flector belongs to the class of drugs called non-steroidal anti-inflammatory drugs (NSAIDs).

    Fact Table




    US FDA



    Legal status


    Chemical Name

    Diclofenac Epolamine

    Elimination half-life

    1.2–2 h

    Dosage (Strength)



    Not Recommended


    Flector Patch

    Protein binding

    More than 99%

    PubChem CID






    ATC code






    Routes of administration

    By mouth


    Apply one Flector patch to the painful area every 12 hours. Remove the previous patch and watch the area before applying the new patch.

    When disposing of this drug, fold it upon itself to prevent accidental exposure to children or animals. 


    The active ingredient in Flector patch is diclofenac.


    Common drug-drug interactions may include:

    • Alcohol
    • Angiotensin II Receptor Blockers
    • Angiotensin-Converting Enzyme Inhibitors
    • Anticoagulants
    • Beta-Blockers
    • Corticosteroids
    • CycloSPORINE
    • Deferasirox
    • Digoxin
    • Herbal Products with Anticoagulant/Antiplatelet Effects 
    • Lithium
    • Loop Diuretics
    • Methotrexate
    • Nonsteroidal Anti-Inflammatory Agents
    • Salicylates
    • Selective Serotonin Reuptake Inhibitors
    • Serotonin/Norepinephrine Reuptake Inhibitors
    • Tacrolimus
    • Tenofovir Products
    • Thiazide and Thiazide-Like Diuretics
    • Voriconazole


    Tell your doctor if you have a history of kidney, liver, or gastrointestinal disease before starting this drug. 

    Ask your doctor or pharmacist for a full list of precautions.

    Side Effects

    The most common adverse reactions are:

    • Acute myocardial infarction
    • Anaphylaxis
    • Aphthous stomatitis
    • Application site atrophy 
    • Application site erythema 
    • Application site irritation 
    • Application site vesicles 
    • Blurred vision
    • Body odor
    • Burning sensation of skin
    • Cataract
    • Cerebrovascular accident
    • Constipation
    • Coronary thrombosis
    • Decreased appetite
    • Depression
    • Dermatitis 
    • Diarrhea 
    • Dizziness 
    • Drowsiness
    • Drug reaction with eosinophilia and systemic symptoms
    • Dysgeusia 
    • Eczema
    • Exfoliative dermatitis
    • Facial edema
    • Gastritis 
    • Gastroenteritis
    • Gastrointestinal hemorrhage
    • Gastrointestinal inflammation
    • Gastrointestinal perforation
    • Gastrointestinal ulcer
    • Hyperhidrosis 
    • Hyperkinetic muscle activity 
    • Hypersensitivity reaction
    • Hypertension
    • Hypoesthesia
    • Increased serum creatinine
    • Increased serum transaminases
    • Laryngismus
    • Laryngitis
    • Lethargy
    • Lip edema
    • Local skin discoloration 
    • Lower limb cramp
    • Nausea 
    • Neck stiffness
    • Oral mucosa ulcer
    • Otalgia
    • Palpitations
    • Pharyngeal edema
    • Pharyngitis
    • Rectal hemorrhage
    • Skin discoloration
    • Stevens-Johnson syndrome
    • Tongue edema
    • Toxic epidermal necrolysis
    • Upper abdominal pain 
    • Urticaria 
    • Visual disturbance
    • Vomiting 
    • Xeroderma 
    • Xerostomia


    Flector Patch [package insert]. Bristol, TN: King Pharmaceuticals Inc.; 2010.

    Frequently Asked Questions about Flector Patch (Diclofenac Epolamine)

    What is Flector Patch used for?

    Flector Patch is used to treat pain caused by minor sprains, strains, or bruising, and symptoms of Arthritis Pain, Acute Pain, and Osteoarthritis.

    How should Flector Patch be applied?

    Apply one patch to the area that hurts the most, twice a day.

    What is the active ingredient in Flector Patch?

    The active ingredient in Flector Patch is Diclofenac Epolamine.

    Is Flector Patch available over the counter or by prescription?

    Flector Patch is available both over the counter and by prescription.

    What class of medication does Flector Patch belong to?

    Flector Patch belongs to a class of drugs called Topical Skin Products, which are also Non-Steroidal Anti-Inflammatory Agents (NSAIDs).

    How long does it take for Flector Patch to work?

    Much like using gel and plaster variants, the Flector patch will usually take 1 to 2 days to work.

    What are the common side effects of Flector Patch?

    Common side effects include skin irritation where the patch is placed, nausea/headaches, heartburn and stomach pain.

    Can Flector Patch be used with other medications?

    Flector Patch may interact with water pills, steroids, Anti-Inflammatory drugs, or blood pressure medications.

    Where can I find more information about Flector Patch?

    You can find more information about Flector Patch on online medication websites like Canada Pharmacy or the packaging of the product.

    How should Flector Patch be stored?

    It is advised to store Flector Patch at room temperature, away from moisture, and out of the reach of children.

    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 : 11420

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