Hydralazine HCl (Generic) Tablets, slide 1 of 1

Hydralazine HCl (Generic) Tablets, 10-mg, 1 tablet

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Hydralazine HCI is an oral tablet given to pets with high blood pressure. It works by helping to widen blood vessels, which decreases pressure. It can be used alone or in combination with other medications to control hypertension. This medication is sometimes used by veterinarians to treat companion animals. Customers may receive this drug under the name Apresoline.

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Hydralazine is indicated for the treatment of high blood pressure and assisting in the treatment of congestive heart failure; it works by opening up the blood vessels.

Possible Side Effects

Incidences of hypotension, vomiting, diarrhea, lethargy, conjunctivitis, water or urinary retention and constipation have been reported.

Drug & Food Interactions

Consult your vet before using Hydralazine with any other medications, including vitamins and supplements.


Hydralazine should be used with caution in pets with intracerebral bleeding.

This drug is FDA-approved for human use. However, it is common practice for veterinarians to prescribe such drugs for use in dogs and cats.

NOTE: For Generic Medications, picture displayed may not depict actual product. Generic medications may vary from one order to the next by size, color and shape depending on manufacturer. Please note product may arrive in a Chewy Pharmacy vial.

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  1. Prescribing Information

See all items by Hydralazine

  • Item Number
  • Generic Name
  • Common Brand Name(s)
  • For Use With
    Dogs & Cats
  • Administration Form
  • Product Form
  • Health Condition
    High Blood Pressure
  • Drug Type
    Arterial Dilator


Recommended Dosage

Use according to your veterinarian's instructions.

Storage Instructions

Store at temperatures between 68° - 77°F.


Why is this medication prescribed?

Hydralazine is used to treat high blood pressure. High blood pressure is a common condition and when not treated, can cause damage to the brain, heart, blood vessels, kidneys and other parts of the body.

How should this medicine be used?

Hydralazine comes as a tablet to take by mouth.

What special precautions should I follow?

Before taking hydralazine:

  • Tell your vet if your pet is allergic to hydralazine, aspirin, tartrazine (a yellow dye in some processed foods and medications), or any other medications. Ask your vet for a list of the ingredients.
  • Tell your vet if your pet has any other diseases.
  • Tell your vet if your pet is pregnant.

What special dietary instructions should we follow?

Hydralazine should be given with meals or as a snack.

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