Prescription Item Prescription Required.
At a Glance
  • Helps treat symptoms of heart and/or lung problems
  • Shown to improve energy, exercise tolerance, and overall quality of life in animals with pulmonary hypertension
  • Sold per tablet
  • Prescription Item

    Prescription required.

    Sildenafil

    $0.28
    $0.30
    -5% off
    Prescription Item

    Prescription required.

    $0.28
    $0.30
    -5% off
    Prescription Item

    Prescription required.

    save big
    $0.28
    -5% all orders
    Up to $30 off, exclusions apply
    $0.28 -5% future orders
    Ship every:
    • Guaranteed savings on every order
    • Pause, skip or cancel anytime
    • Free access to licensed veterinarians
    $0.30
    Quantity:
    Please select all product options.
    Checkbox Temporarily Out of Stock
    Be the first to know when it’s available. Enter your email address, and we’ll let you know as soon as it’s back on our shelves.
    Please select all product options.
    delivery-truck-speed
    Free 2-3 Day Shipping on orders $49+
    purchase-count
    145 pet parents purchased this item in the last 30 days
    About this product

    What is Sildenafil?

    Sildenafil is used in dogs and cats with heart and/or lung problems that cause increased blood pressure in the arteries of the lungs. Sildenafil has been shown to improve energy, exercise tolerance, and overall quality of life in animals with pulmonary hypertension. It is sold per tablet and requires a prescription from your veterinarian.

    For:

    Dogs and Cats

    Benefits:

    • Helps treat symptoms of heart and/or lung problems
    • Shown to improve energy, exercise tolerance, and overall quality of life in animals with pulmonary hypertension
    • Sold per tablet

    How does Sildenafil work?

    Pulmonary hypertension refers to abnormally high blood pressure in the arteries of the lungs that forces the right side of the heart to work harder than normal. Sildenafil causes the smooth muscle surrounding small blood vessels in the lungs to relax, decreasing the workload on the heart.

    Cautions:

    Keep this and all medication out of reach of children. This drug should only be given to the pet for which it was prescribed. Do not give this medication to a person. Sildenafil should not be used in pets that are experiencing low blood pressure, shock, blood or fluid loss, or certain heart or lung problems that will not be improved by this medication.

    Brand Name:

    Viagra

    Generic Name:

    Sildenafil

    What is the most important thing I should know about Sildenafil?

    Sildenafil is a drug that is used in dogs and cats with heart and/or lung problems that cause increased blood pressure in the arteries of the lungs. It is sold per tablet and requires a prescription from your veterinarian. The usual dose ranges between 2.2-6.6 mg/lb 2-3 times daily.

    What should I discuss with my veterinarian before giving Sildenafil to my pet?

    Tell your veterinarian if your pet is pregnant or lactating or takes other medications.

    How should Sildenafil be given?

    Give Sildenafil to your pet exactly as instructed. The usual dose of Sildenafil  is 2.2-6.6 mg/lb 2-3 times daily by the mouth. Sildenafil can be given with or without food, as prescribed by your veterinarian.

    What are the potential side effects of Sildenafil?

    Reported side effects of Sildenafil in dogs include gastrointestinal upset and reddening or flushing of the skin.

    What happens if I miss giving a dose of Sildenafil?

    If you miss giving your pet a dose of sildenafil, give the next dose as soon as you remember or, if it is close to the next scheduled dose, return to the regular schedule. Do not double dose to catch up.

    What happens if I overdose my pet on Sildenafil?

    Seek veterinary medical care immediately.

    What should I avoid while giving Sildenafil to my pet?

    Avoid using with medications that may cause low blood pressure, like nitrates, nitroprusside sodium, alpha-adrenergic blockers (phentolamine, phenoxybenzamine, phenothiazines), amlodipine, or any other hypotensive medications.

    What other drugs will affect Sildenafil?

    The following medications may interact with Sildenafil: cimetidine, erythromycin, clarithromycin, ketoconazole, itraconazole, phenobarbital, and rifampin.

    See more

    Sildenafil Directions:

    • Administer to your pet as prescribed by your veterinarian.
    • Wash your hands after giving to your pet.
    • The usual dose of Sildenafil  is 2.2-6.6 mg/lb 2-3 times daily by the mouth
    Tip:

    Sildenafil can be given with or without food.

    Sildenafil Dosage:

    Sildenafil Dosage for Cats
    WeightDosage
    All weightsGive 2.2-6.6 mg/lb by the mouth 2-3 times daily or as directed by your veterinarian
    Sildenafil Dosage for Dogs
    WeightDosage
    All weightsGive 2.2-6.6 mg/lb by the mouth 2-3 times daily or as directed by your veterinarian
    Sildenafil Dosage for Horses
    Horses
    Do not use!

    Storage:

    Store at room temperature out of the reach of children and pets.

    Sildenafil Ingredients:

    Sildenafil 20 mg Tablet
    Active Ingredient (per tablet)Amount
    Sildenafil20 mg
    Product Details
    plus minus

    What is Sildenafil?

    Sildenafil is used in dogs and cats with heart and/or lung problems that cause increased blood pressure in the arteries of the lungs. Sildenafil has been shown to improve energy, exercise tolerance, and overall quality of life in animals with pulmonary hypertension. It is sold per tablet and requires a prescription from your veterinarian.

    For:

    Dogs and Cats

    Benefits:

    • Helps treat symptoms of heart and/or lung problems
    • Shown to improve energy, exercise tolerance, and overall quality of life in animals with pulmonary hypertension
    • Sold per tablet

    How does Sildenafil work?

    Pulmonary hypertension refers to abnormally high blood pressure in the arteries of the lungs that forces the right side of the heart to work harder than normal. Sildenafil causes the smooth muscle surrounding small blood vessels in the lungs to relax, decreasing the workload on the heart.

    Cautions:

    Keep this and all medication out of reach of children. This drug should only be given to the pet for which it was prescribed. Do not give this medication to a person. Sildenafil should not be used in pets that are experiencing low blood pressure, shock, blood or fluid loss, or certain heart or lung problems that will not be improved by this medication.

    Brand Name:

    Viagra

    Generic Name:

    Sildenafil

    What is the most important thing I should know about Sildenafil?

    Sildenafil is a drug that is used in dogs and cats with heart and/or lung problems that cause increased blood pressure in the arteries of the lungs. It is sold per tablet and requires a prescription from your veterinarian. The usual dose ranges between 2.2-6.6 mg/lb 2-3 times daily.

    What should I discuss with my veterinarian before giving Sildenafil to my pet?

    Tell your veterinarian if your pet is pregnant or lactating or takes other medications.

    How should Sildenafil be given?

    Give Sildenafil to your pet exactly as instructed. The usual dose of Sildenafil  is 2.2-6.6 mg/lb 2-3 times daily by the mouth. Sildenafil can be given with or without food, as prescribed by your veterinarian.

    What are the potential side effects of Sildenafil?

    Reported side effects of Sildenafil in dogs include gastrointestinal upset and reddening or flushing of the skin.

    What happens if I miss giving a dose of Sildenafil?

    If you miss giving your pet a dose of sildenafil, give the next dose as soon as you remember or, if it is close to the next scheduled dose, return to the regular schedule. Do not double dose to catch up.

    What happens if I overdose my pet on Sildenafil?

    Seek veterinary medical care immediately.

    What should I avoid while giving Sildenafil to my pet?

    Avoid using with medications that may cause low blood pressure, like nitrates, nitroprusside sodium, alpha-adrenergic blockers (phentolamine, phenoxybenzamine, phenothiazines), amlodipine, or any other hypotensive medications.

    What other drugs will affect Sildenafil?

    The following medications may interact with Sildenafil: cimetidine, erythromycin, clarithromycin, ketoconazole, itraconazole, phenobarbital, and rifampin.

    See more
    How to use
    plus minus

    Sildenafil Directions:

    • Administer to your pet as prescribed by your veterinarian.
    • Wash your hands after giving to your pet.
    • The usual dose of Sildenafil  is 2.2-6.6 mg/lb 2-3 times daily by the mouth
    Tip:

    Sildenafil can be given with or without food.

    Sildenafil Dosage:

    Sildenafil Dosage for Cats
    WeightDosage
    All weightsGive 2.2-6.6 mg/lb by the mouth 2-3 times daily or as directed by your veterinarian
    Sildenafil Dosage for Dogs
    WeightDosage
    All weightsGive 2.2-6.6 mg/lb by the mouth 2-3 times daily or as directed by your veterinarian
    Sildenafil Dosage for Horses
    Horses
    Do not use!

    Storage:

    Store at room temperature out of the reach of children and pets.

    Ingredients
    plus minus

    Sildenafil Ingredients:

    Sildenafil 20 mg Tablet
    Active Ingredient (per tablet)Amount
    Sildenafil20 mg
    Other Options
    Swipe
    Prescription
    $62.39
    $59.27 with Autoship (Save 5%) Autoship indicator AutoShip
    5% off all orders with AutoShip
    Quick Add

    Customers also boughtView All

    Swipe