Hydralazine Hcl
hydrALAZINE HCl 25MG
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.Side Effects
- Lightheadedness, dizziness, or fainting
- Fever, chills, cough, sore throat, and body aches
- Unusual bleeding, bruising, or weakness
Warnings
- 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.
Prescription savings · · · ·
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
Hydralazine Hcl Coupons & Prices
hydrALAZINE HCl 25MG
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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.
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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Medical disclaimer: This information is provided for general educational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a licensed physician, pharmacist, or other qualified healthcare provider before starting, stopping, or changing any medication or treatment. Never disregard professional medical advice or delay seeking it because of something you read here. If you think you may have a medical emergency, call your doctor or 911 immediately.