Pronunciation: PRAZ-oh-sin
Generic Name: Prazosin
Brand Name: Minipress
Minipress is used for:
Treating high blood pressure or benign prostatic hyperplasia (BPH). It may also be used for other conditions as determined by your doctor.
Minipress is an alpha-blocker. It works by causing the blood vessels and the muscles around the urethra (the tube leading out of the bladder) to relax. This helps to lower blood pressure and to improve urinary symptoms associated with enlargement of the prostate (BPH).
Do NOT use Minipress if:
- you are allergic to any ingredient in Minipress
Contact your doctor or health care provider right away if any of these apply to you.
Before using Minipress:
Some medical conditions may interact with Minipress. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
- if you are pregnant, planning to become pregnant, or are breast-feeding
- if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
- if you have allergies to medicines, foods, or other substances
- if you have chest pain, heart disease, narcolepsy, or kidney problems
- if you will be having eye surgery
Some MEDICINES MAY INTERACT with Minipress. Tell your health care provider if you are taking any other medicines, especially any of the following:
- Diuretics (eg, furosemide, hydrochlorothiazide) or verapamil because they may increase the risk of Minipress's side effects
- Beta-blockers (eg, propranolol) or phosphodiesterase inhibitors (eg, sildenafil) because their actions and the risk of their side effects may be increased by Minipress
This may not be a complete list of all interactions that may occur. Ask your health care provider if Minipress may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.
How to use Minipress:
Use Minipress as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- Take Minipress by mouth with or without food.
- If you miss a dose of Minipress, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
Ask your health care provider any questions you may have about how to use Minipress.
Important safety information:
- Minipress may cause dizziness, lightheadedness, or fainting after the first dose. Take the first dose at bedtime. If you get up during the night, sit up and stand slowly. Continue to sit up and stand slowly while you are taking Minipress.
- Minipress may cause dizziness, drowsiness, lightheadedness, or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use Minipress with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.
- Minipress may cause dizziness, lightheadedness, or fainting; alcohol, hot weather, exercise, or fever may increase these effects. To prevent them, sit up or stand slowly, especially in the morning. Sit or lie down at the first sign of any of these effects.
- Avoid engaging in any hazardous tasks for at least 24 hours after taking the first dose, missing several doses, increasing the dose, or taking other high blood pressure medications.
- Before drinking alcohol, discuss it with your doctor.
- Tell your doctor or dentist that you take Minipress before you receive any medical or dental care, emergency care, or surgery.
- Patients who take medicine for high blood pressure often feel tired or run down for a few weeks after starting treatment. Be sure to take your medicine even if you may not feel "normal." Tell your doctor if you develop any new symptoms.
- Minipress may interfere with certain lab tests, including tests for pheochromocytoma (an adrenal gland tumor). Be sure your doctor and lab personnel know you are taking Minipress.
- Use Minipress with extreme caution in the ELDERLY; they may be more sensitive to its effects.
- Minipress should not be used in CHILDREN; safety and effectiveness in children have not been confirmed.
- PREGNANCY and BREAST-FEEDING: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Minipress while you are pregnant. Minipress is found in breast milk. If you are or will be breast-feeding while you use Minipress, check with your doctor. Discuss any possible risks to your baby.
Possible side effects of Minipress:
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Dizziness; drowsiness; dry mouth; frequent urination; headache; lack of energy; lightheadedness; nasal congestion; nausea; weakness.
Seek medical attention right away if any of these SEVERE side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); blurred vision; fainting; fast or irregular heartbeat; depression; severe or persistent dizziness; swelling of the hands or feet.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.
See also: Minipress side effects (in more detail)
If OVERDOSE is suspected:
Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include dizziness; severe drowsiness; weakness.
Proper storage of Minipress:
Store Minipress at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Store away from heat, light, and moisture. Keep Minipress out of the reach of children and away from pets.
General information:
- If you have any questions about Minipress, please talk with your doctor, pharmacist, or other health care provider.
- Minipress is to be used only by the patient for whom it is prescribed. Do not share it with other people.
- If your symptoms do not improve or if they become worse, check with your doctor.
- Check with your pharmacist about how to dispose of unused medicine.
This information is a summary only. It does not contain all information about Minipress. If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.
More Minipress resources
- Minipress Side Effects (in more detail)
- Minipress Use in Pregnancy & Breastfeeding
- Minipress Drug Interactions
- Minipress Support Group
- 9 Reviews for Minipress - Add your own review/rating
- Minipress Prescribing Information (FDA)
- Minipress Advanced Consumer (Micromedex) - Includes Dosage Information
- Minipress Concise Consumer Information (Cerner Multum)
- Minipress Monograph (AHFS DI)
- Prazosin Prescribing Information (FDA)
- Prazosin Professional Patient Advice (Wolters Kluwer)
Compare Minipress with other medications
- Benign Prostatic Hyperplasia
- Heart Failure
- High Blood Pressure
- Raynaud's Syndrome
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