Uses
What the official label says Hydralazine is used for
The FDA label for Hydralazine states:
Essential hypertension, alone or as an adjunct.
Read the label's “Indications and usage” section (verbatim)
Essential hypertension, alone or as an adjunct.
Names & forms
Brand names, forms and strengths
We did not find brand names for this exact product in RxNorm. Ask your pharmacist which brand or generic version you have.
Generic name: hydralazine · RxNorm ID (RxCUI): 5470
| Form | Strengths listed in RxNorm |
|---|---|
| Injection | 20 MG/ML |
| Oral Tablet | 10 MG, 25 MG, 50 MG, 100 MG |
Strengths are listed so you can recognise a product — not as dosing information. Only your prescriber can decide what is right for you.
Appearance
What Hydralazine looks like
hydralazine hydrochloride 10 mg
Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.
hydralazine hydrochloride 25 mg
Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.
hydralazine hydrochloride 50 mg
Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.
hydralazine hydrochloride 100 mg
Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc.
hydralazine hydrochloride 25 mg
Strides Pharma Science Limited
hydralazine hydrochloride 50 mg
Strides Pharma Science Limited
| Strength | Form | Colour | Shape | Size | Imprint | Score | Labeler |
|---|---|---|---|---|---|---|---|
| hydralazine hydrochloride 10 mg | tablet | pink“Peach” | round | 6 mm | EP · 101 | 1 | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. |
| hydralazine hydrochloride 25 mg | tablet | pink“Peach” | round | 6 mm | EP · 102 | 1 | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. |
| hydralazine hydrochloride 50 mg | tablet | pink“Peach” | round | 8 mm | EP · 103 | 1 | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. |
| hydralazine hydrochloride 100 mg | tablet | pink“Peach” | round | 10 mm | EP · 104 | 1 | Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. |
| hydralazine hydrochloride 25 mg | tablet | orange“orange colored” | round | 8 mm | 25 | 1 | Strides Pharma Science Limited |
| hydralazine hydrochloride 50 mg | tablet | orange“orange coloured” | round | 9 mm | 50 | 1 | Strides Pharma Science Limited |
| hydralazine hydrochloride 100 mg | tablet | orange“orange cloured” | round | 11 mm | 100 | 1 | Strides Pharma Science Limited |
| hydralazine hydrochloride 10 mg | tablet | orange“orange cloured” | round | 8 mm | 10 | 1 | Strides Pharma Science Limited |
| hydralazine hydrochloride 10 mg | tablet, film coated | pink | round | 7 mm | HP · 1 | 1 | Chartwell RX, LLC |
| hydralazine hydrochloride 25 mg | tablet, film coated | pink | round | 8 mm | HP · 2 | 1 | Chartwell RX, LLC |
| hydralazine hydrochloride 50 mg | tablet, film coated | pink | round | 10 mm | HP · 3 | 1 | Chartwell RX, LLC |
| hydralazine hydrochloride 100 mg | tablet, film coated | pink | round | 11 mm | HP · 4 | 1 | Chartwell RX, LLC |
| hydralazine hydrochloride 10 mg | tablet | orange | round | 5 mm | H · 38 | 1 | Camber Pharmaceuticals, Inc. |
| hydralazine hydrochloride 25 mg | tablet | orange | round | 6 mm | H · 39 | 1 | Camber Pharmaceuticals, Inc. |
| hydralazine hydrochloride 50 mg | tablet | orange | round | 8 mm | H · 40 | 1 | Camber Pharmaceuticals, Inc. |
| hydralazine hydrochloride 100 mg | tablet | orange | round | 11 mm | H · 41 | 1 | Camber Pharmaceuticals, Inc. |
From the product data in each manufacturer's label on DailyMed. Many companies make Hydralazine, so your medicine may look different from any shown here. If a pill looks unfamiliar, ask your pharmacist before taking it.
Read the label's “How supplied” section (verbatim)
HydrALAZINE Hydrochloride Tablets, USP are available as: 10 mg – Round, peach core tablet, debossed EP on one side and 101 on the reverse side. NDC 23155-832-01 Bottles of 100 NDC 23155-832-10 Bottles of 1000 25 mg – Round, peach, core tablet, debossed EP over 102 on one side and plain on the reverse side. NDC 23155-833-01 Bottles of 100 NDC 23155-833-10 Bottles of 1000 50 mg – Round, peach, core tablet, debossed EP over 103 on one side and plain on the reverse side. NDC 23155-834-01 Bottles of 100 NDC 23155-834-10 Bottles of 1000 100 mg – Round, Peach, core tablet, debossed EP over 104 on one side and plain on the reverse side. NDC 23155-835-01 Bottles of 100 Dispense in a tight, light-resistant container as defined in the USP. Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature]. KEEP THIS AND ALL MEDICATIONS OUT OF THE REACH OF CHILDREN. Manufactured by: Stallion Laboratories Private Limited Gallops Industrial Park-II, Ahmedabad-382110, Gujarat, India Distributed by: Avet Pharmaceuticals Inc. East Brunswick, NJ 08816 1-866-901-DRUG (3784) Revised: 06/2025 logo
Safety
Important warnings for Hydralazine
In a few patients hydrALAZINE may produce a clinical picture simulating systemic lupus erythematosus including glomerulonephritis. In such patients hydrALAZINE should be discontinued unless the benefit-to-risk determination requires continued antihypertensive therapy with this drug. Symptoms and signs usually regress when the drug is discontinued but residua have been detected many years later. Long-term treatment with steroids may be necessary. (See PRECAUTIONS, Laboratory Tests .)
Contraindications — who should not use it (verbatim)
Hypersensitivity to hydrALAZINE; coronary artery disease; mitral valvular rheumatic heart disease.
Warnings and precautions (verbatim excerpt)
In a few patients hydrALAZINE may produce a clinical picture simulating systemic lupus erythematosus including glomerulonephritis. In such patients hydrALAZINE should be discontinued unless the benefit-to-risk determination requires continued antihypertensive therapy with this drug. Symptoms and signs usually regress when the drug is discontinued but residua have been detected many years later. Long-term treatment with steroids may be necessary. (See PRECAUTIONS, Laboratory Tests .)
Side effects — opening of the label's adverse reactions section
Adverse reactions with hydrALAZINE are usually reversible when dosage is reduced. However, in some cases it may be necessary to discontinue the drug. The following adverse reactions have been observed, but there has not been enough systematic collection of data to support an estimate of their frequency. Common Headache, anorexia, nausea, vomiting, diarrhea, palpitations, tachycardia, angina pectoris. Less Frequent: Digestive: constipation, paralytic ileus. Cardiovascular: hypotension, paradoxical pressor response, edema. Respiratory: dyspnea. Neurologic: peripheral neuritis, evidenced by paresthesia, numbness, and tingling; dizziness; tremors; muscle cramps; psychotic reactions characterized by depression, disorientation, or anxiety. Genitourinary: difficulty in urination. …
This is not a complete list of warnings or side effects. Read the full label and talk to your prescriber or pharmacist. To report a side effect to the FDA, use MedWatch.
Resources
If you were hurt at work
Whether a medicine is right for you is a decision for your prescriber. If you were injured on the job, these educational guides explain the next steps and who can help.
- Injured at work? →What to do after a workplace injury and how workers' comp generally works.
- Prescription home delivery →How mail-order pharmacies can deliver prescriptions to your door.
- Find help →Connect with workers' comp attorneys and doctors who take work-injury cases.
- Pharmacies near you →Search local pharmacies by ZIP code.