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.

Nocdurna (Desmopressin)


Nocdurna (Desmopressin)

Prescription Required


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  • Product Details


    Nocdurna (desmopressin acetate) is available only by prescription to treat nighttime urination caused by nocturnal polyuria in adults who wake up at least two times at night to urinate.

    Nocdurna comes in 27.7 mcg and 55.3 mcg tablets that are to be placed underneath the tongue to dissolve.

    Fact Table




    US FDA


    Variable; 0.08–0.16% (by mouth)

    Legal status


    Chemical Name


    Elimination half-life

    1.5–2.5 hours

    Dosage (Strength)

    25mcg, 50mcg


    Consult Doctor



    Protein binding


    PubChem CID






    ATC code






    Routes of administration

    Sublingually as tablets


    Take Nocdurna as prescribed by your doctor. Tell your doctor or pharmacist about any questions or concerns you may have.

    Dosing in women: Place one 27.7 mcg tablet underneath the tongue once daily without water. Take one hour before bedtime.

    Dosing in men: Place one 55.3 mcg tablet underneath the tongue once daily without water. Take one hour before bedtime.


    The active ingredient in Nocdurna is desmopressin acetate. Inactive ingredients include gelatin, NF (fish source), mannitol, and anhydrous citric acid.


    Do not take Nocdurna if you:

    • Have low sodium levels or a history of low sodium levels
    • Have excess thirst
    • Are taking loop diuretics or systemic or inhaled glucocorticoids
    • Have kidney problems
    • Have syndrome of inappropriate antidiuretic hormone secretion (SIADH)
    • Have an illness that can cause fluid or electrolyte disturbances
    • Have heart failure
    • Have uncontrolled high blood pressure


    Nocdurna has the following FDA Boxed Warnings:

    • Nocdurna can cause low sodium levels that can be severe and life-threatening
    • Nocdurna should not be used in patients who are at risk for severe low sodium levels, including patients with excessive fluid intake, illnesses that can cause fluid or electrolyte disturbances, and in those taking loop diuretics or systemic or inhaled glucocorticoids
    • Blood sodium levels should be normal before starting or resuming Nocdurna. Blood sodium should be measured within 1 week and approximately 1 month after starting therapy and periodically during treatment. Patients who are 65 years old and older and patients who are at increased risk for low sodium levels should receive more frequent monitoring.
    • Nocdurna may need to be stopped temporarily or permanently in patients who develop low sodium levels.
    • Before you start taking Nocdurna, inform your doctor of:
      • All the medications you take
      • Your allergies
      • Your current health conditions and past medical history
      • Your pregnancy or breastfeeding status
    • Patients are recommended to limit their fluid intake from 1 hour before, or until 8 hours, after taking Nocdurna.
    • Patients who are at risk of increased intracranial pressure or who have a history of urinary retention are not recommended to take Nocdurna.

    Side Effects

    Common Nocdurna side effects include dry mouth, low blood sodium levels, and dizziness. However, these are not all the side effects that can occur with Nocdurna treatment. Call your doctor right away if you have side effects that bother you or won’t go away.

    With a valid prescription from your doctor, you can buy Nocdurna online at a competitive price at Canada Pharmacy.


    1. Nocdurna. Ewing, NJ: Antares Pharma Inc.; 2020.

    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 : 13861

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