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Hydralazine Hcl

hydrALAZINE HCl 25MG

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What is Hydralazine Hcl?

If you are diagnosed with high blood pressure, your doctor might prescribe hydralazine. Typically, hydralazine is not used as a first line drug to treat high blood pressure. Hydralazine may be used in combination with other medications.

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What is Hydralazine Hcl ?

If you are diagnosed with high blood pressure, your doctor might prescribe hydralazine. Typically, hydralazine is not used as a first line drug to treat high blood pressure. Hydralazine may be used in combination with other medications.
  • Lightheadedness, dizziness, or fainting
  • Fever, chills, cough, sore throat, and body aches
  • Unusual bleeding, bruising, or weakness
  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Change in how much or how often you urinate
  • Chest pain that may spread to your arms, jaw, back, or neck, trouble breathing, unusual sweating, faintness
  • Numbness, tingling, or burning pain in your hands, arms, legs, or feet
  • Fast, pounding, or uneven heartbeat
  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, heart or blood vessel disease, heart rhythm problems, lupus, or if you had a heart attack or stroke.
  • This medicine may cause the following problems:Lupus-like syndromeChanges in heart rhythmNerve problems
  • This medicine may lower your blood pressure too much and cause you to feel dizzy. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.
  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
  • Lightheadedness, dizziness, or fainting
  • Numbness, tingling, or burning pain in your hands, arms, legs, or feet
  • Unusual bleeding, bruising, or weakness
What is hydralazine HCl used for?
Hydralazine hydrochloride tablets are FDA-approved for treating essential (chronic) high blood pressure, while the injectable form is FDA-approved for hypertensive emergencies in a hospital setting. It's also used off-label, often combined with isosorbide dinitrate, for heart failure with reduced ejection fraction, particularly in Black patients or those who cannot tolerate ACE inhibitors or ARBs, and off-label for high blood pressure during pregnancy, including preeclampsia.
What are the warning signs of lupus-like syndrome from hydralazine?
Watch for joint pain (arthralgia), fever, and rash, along with a positive ANA (antinuclear antibody) result on bloodwork. This drug-induced lupus-like syndrome is more likely with prolonged use or higher doses, especially in people who are "slow acetylators." Symptoms typically resolve after hydralazine is discontinued. Contact your provider promptly if you notice these symptoms.
Is hydralazine the same as Apresoline?
Yes, hydralazine hydrochloride is the active ingredient that was originally sold under the brand name Apresoline. Apresoline has been discontinued in the US, so hydralazine is now available only as a generic medication.
Why is hydralazine often prescribed with a beta-blocker?
Hydralazine relaxes and widens small arteries, and the body can respond with a reflex increase in heart rate (reflex tachycardia). In people with coronary artery disease, that added workload can trigger angina or reduce blood flow to the heart. A beta-blocker, such as metoprolol, helps blunt that reflex heart-rate increase, which is why the two are often prescribed together.
How long does it take for hydralazine to lower blood pressure?
It depends on the form and dose. The injectable (IV/IM) form used for hypertensive emergencies works faster than the oral tablet form used for everyday blood pressure control. Because response varies by person, your provider will typically monitor your blood pressure and adjust your dose as needed, follow their instructions on timing and monitoring.
How much does Hydralazine Hcl cost without insurance?
The price of Hydralazine Hcl without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you. Many people save up to 89% off retail prices with a free Rx.com coupon.
What are the common side effects of Hydralazine Hcl?
Common side effects of Hydralazine Hcl may include: Lightheadedness, dizziness, or fainting, Fever, chills, cough, sore throat, and body aches, Unusual bleeding, bruising, or weakness, Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing, Change in how much or how often you urinate. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Hydralazine Hcl?
Generic versions may be available for Hydralazine Hcl. Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Hydralazine Hcl on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Hydralazine Hcl?
The cheapest pharmacy for Hydralazine Hcl depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Hydralazine Hcl near you.

Hydralazine Hcl Coupons & Prices

hydrALAZINE HCl 25MG

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Hydralazine Hcl Tablet — prescription drug image
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Searching for a hydralazine HCl coupon? Hydralazine hydrochloride is a generic blood pressure medication, the original brand, Apresoline, has been discontinued in the US, so it's sold only as a generic today, but cash prices for the same tablet can still vary widely from one pharmacy to the next. Rx.com compares prices at more than 60,000 U.S. pharmacies so you can find the lowest price near you. Enter your ZIP code above to see today's price at pharmacies in your area.

What Is Hydralazine HCl and How Does It Work?

Hydralazine hydrochloride is a direct-acting arteriolar vasodilator. It works by relaxing the smooth muscle in the walls of small arteries (arterioles), which widens those blood vessels and lowers the resistance the heart has to pump against, in turn lowering blood pressure.

The oral tablet is FDA-approved for essential (chronic) hypertension, while an injectable (IV/IM) form is FDA-approved for hypertensive emergencies in a hospital setting. Hydralazine is also used off-label, often in combination with isosorbide dinitrate, as part of guideline-directed therapy for heart failure with reduced ejection fraction, particularly in Black patients or in patients who cannot tolerate ACE inhibitors or ARBs (this combination is sold under the brand name BiDil). It's also sometimes used off-label to manage high blood pressure during pregnancy, including preeclampsia.

Hydralazine HCl Cost and Coupon Savings

Hydralazine hydrochloride is a generic-only medication, there is no brand-name version currently sold in the US since Apresoline was discontinued. That doesn't mean every pharmacy charges the same amount: cash prices for generic drugs like hydralazine can differ significantly from one pharmacy to the next, even within the same town, so it pays to compare before you fill.

There is currently no manufacturer savings card for hydralazine HCl. Rx.com checks pricing at more than 60,000 pharmacies nationwide so you can see how your local pharmacy's price compares to others near you. Enter your ZIP code above to see today's price.

Hydralazine HCl vs. Other Blood Pressure Medications

Hydralazine works differently than most first-line blood pressure medications. Drugs like lisinopril (an ACE inhibitor), losartan (an ARB), and amlodipine (a calcium channel blocker) are typically tried first for essential hypertension, with hydralazine reserved for patients who need an additional or alternative option.

Because hydralazine can trigger a reflexive increase in heart rate, it's often prescribed together with a beta-blocker such as metoprolol to offset that effect. In heart failure regimens, it may be combined with isosorbide dinitrate and a diuretic like furosemide as part of a broader treatment plan.

Hydralazine HCl Safety Information

Hydralazine HCl does not carry an FDA boxed warning. The most notable risk with long-term or higher-dose use is a drug-induced lupus-like syndrome, joint pain, fever, rash, and a positive ANA blood test, which is more common in people who metabolize the drug slowly ("slow acetylators") and typically resolves after the medication is stopped. Some people also develop peripheral neuropathy (numbness or tingling), which may improve with vitamin B6 (pyridoxine).

Because hydralazine widens blood vessels, it can cause reflex tachycardia, low blood pressure, and, in people with coronary artery disease, angina or reduced blood flow to the heart, which is one reason it's often paired with a beta-blocker. It should be used with caution in significant kidney impairment, and some labeling lists coronary artery disease and mitral valve rheumatic heart disease as contraindications, along with known hypersensitivity to hydralazine. This is general information, not medical advice, talk with your doctor or pharmacist about whether hydralazine is right for you.

Sources & accuracy

This Hydralazine Hcl information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Hydralazine Hcl on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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