Hydralazine is a medication used to dilate blood vessels which reduces the workload of the heart and increases its ability to work efficiently. Allowing the blood to flow more effectively aids in the treatment of high blood pressure and congestive heart failure. This medication is available as a tablet.
WHAT IS THIS DRUG?
- A peripheral vasodilator
- Given by mouth
REASONS FOR PRESCRIBING:
- To treat hypertension or high blood pressure
- As an adjunct treatment for congestive heart failure
WHAT DOGS/CATS SHOULD NOT TAKE THIS MEDICATION?
- This medication should not be used in pets with low blood pressure or low circulating blood volume
- This medication should be used with caution in pets with severe kidney disease
- This medication should be used with caution in pets with head trauma or autoimmune disease such as lupus
- Safety in pregnant or nursing pets has not been established
- Animals with a known hypersensitivity or allergy to this drug should not take this medication
Read and follow the label carefully.
Give the exact amount prescribed and only as often as directed.
Give this medication for as long as veterinarian directs. Do not skip doses or stop giving the medication without consulting your veterinarian. This medication may be a life long medication.
Baseline blood work is recommended to assess your pet's general health before starting this medication. Periodic blood work, blood pressure measurements, chest radiographs, and urinalysis may be recommended to monitor this medication’s effects on the body.
Dose adjustments may be made based upon these results and an assessment of how your dog or cats is responding clinically. With the addition of other heart medications, dose adjustments may be required.
It is important that your pet does not become dehydrated while taking this medication. Ensure that s/he has access to fresh water at all times.
Call ahead for refills.
Ideally, give the medication at the same time(s) daily.
WHAT IF A DOSE IS MISSED?
If a dose is missed, give it as soon as you can. If it is time already for the next dose, skip the missed dose and go back to the normal schedule. Do not give two doses at the same time.
STORAGE AND WARNINGS:
Hydralazine should be stored in a childproof container in a cool, dry place at room temperature away from heat and direct sunlight.
Keep this and all medication out of reach of children and pets.
Call your physician immediately if you accidentally take this product.
POTENTIAL SIDE EFFECTS:
- This medication can affect the gastrointestinal system causing vomiting and diarrhea
- This medication can contribute to low blood pressure which may cause weakness, lethargy and collapse
- Due to the potential for lower blood pressure, this medication may cause a reflexive increase in heart rate
- If you notice any of these symptoms or if your pet's condition worsens contact your veterinarian
CAN THIS DRUG BE GIVEN WITH OTHER DRUGS?
- Yes, but possible interactions may occur with ACE inhibitors, beta-blockers, diuretics, MAO inhibitors, and sympathomimetics (e.g. epinephrine)
- Drugs other than those listed may also interact with Hydralazine
- Do not give new food or medications without first talking to your veterinarian
- If your pet experiences any unusual reactions when taking multiple medications, contact your veterinarian
Contact your veterinarian immediately if pet receives more than the prescribed amount.
WHAT TO TELL/ASK A VETERINARIAN BEFORE GIVING MEDICATION?Talk to your veterinarian about:
- Common signs of heart disease in your pet
- When your pet will need to be rechecked
- What tests may need to be performed prior to and during treatment with this drug
- What are the risks and benefits of using this drug
- If your pet has experienced side effects on other drugs/products
- If your pet has experienced digestive upset now or ever
- If your pet has experienced liver or kidney disease now or ever
- If your pet has experienced any other medical problems or allergies now or ever
- All medicines and supplements that you are giving your pet or plan to give your pet, including those you can get without a prescription. Your veterinarian may want to check that all of your pet’s medications can be given together.
- If your pet is pregnant, nursing or if you plan to breed your pet
WHAT ELSE SHOULD I KNOW?
Notify your veterinarian if your animal's condition does not improve or worsens despite this treatment.
As with all prescribed medicines, Hydralazine should only be given to the pet for which it was prescribed. It should be given only for the condition for which it was prescribed.
This is just a summary of information about Hydralazine. If you have any questions or concerns about this medication or for the condition it was prescribed, contact your veterinarian.