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Buy Minipress Online
(Prazosin Hydrochloride)

What is Minipress?

What is Minipress?

Minipress is a prescription medication used to treat high blood pressure (hypertension). Lowering blood pressure helps prevent strokes, heart attacks, and kidney problems. The active ingredient in Minipress is prazosin hydrochloride, an alpha-blocker.

Minipress may also be prescribed off-label for other conditions such as benign prostatic hyperplasia (BPH), post-traumatic stress disorder (PTSD)-related nightmares, and certain forms of heart failure.

Order Minipress online today and save!

Purchase Minipress from Universal Drugstore today and save!

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  • All Strength's
  • 1mg
  • 2mg
  • 5mg

brand Versions

Sorry, we don't currently have a brand option for this item.

Please see generic options below.

Prazosin Hydrochloride (generic Minipress)

What are generics?

Prazosin Hydrochloride 
1mg

Prescription Required
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Prescription Required
Product of Canada

Product of Canada

Marketed as Apo-Prazo in Canada.

Prazosin Hydrochloride 
2mg

Prescription Required
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Prescription Required
Product of Canada

Product of Canada

Marketed as Apo-Prazo in Canada.

Prazosin Hydrochloride 
5mg

Prescription Required
Select Quantity
Prescription Required
Product of Canada

Product of Canada

Marketed as Apo-Prazo in Canada.

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Important information about Minipress

The active ingredient in Minipress is prazosin hydrochloride. It works by blocking alpha-1 adrenergic receptors found in blood vessels and smooth muscle. Normally, these receptors respond to norepinephrine (a natural chemical in the body) by constricting blood vessels. When prazosin blocks this action, the blood vessels relax and widen, allowing blood to flow more easily and lowering blood pressure.

This relaxation effect also improves blood flow to the heart and other organs, which can help with conditions such as heart failure or prostate-related urinary issues. Because of this mechanism, prazosin is considered an antihypertensive agent.

Follow all directions given to you by your doctor and read all documents provided, including the full Prescribing Information, FDA-Approved Product Labeling, Instructions for Use, and Medication Guide before using Minipress. However, the following is a synopsis of the general guidelines for the use of Minipress:

  • Minipress is taken by mouth, usually two or three times daily, with or without food.
  • The first dose should be taken at bedtime to reduce the risk of sudden low blood pressure or fainting (known as the “first-dose effect”).
  • If you feel dizzy or lightheaded, sit or lie down right away and rise slowly when getting up.
  • The dosage is based on your medical condition and response to treatment. Your healthcare provider may start you on a low dose and gradually increase it.
  • Take Minipress at the same time each day for the best results.
  • Do not stop taking Minipress suddenly without medical advice, as this can cause your blood pressure to rise again.
  • If you miss a dose, take it as soon as you remember, unless it’s almost time for your next dose. In that case, skip the missed dose and resume your regular schedule. Do not double your next dose.
  • Avoid drinking alcohol while taking Minipress, as it can increase drowsiness, dizziness, or fainting.

Some mild or common side effects of Minipress include:

  • Drowsiness or dizziness.
  • Headache.
  • Weakness or lack of energy.
  • Nausea.
  • Constipation.
  • Palpitations or a fast heart rate.
  • Blurred vision.
  • Dry mouth.
  • Edema (swelling in hands, feet, or ankles).

Some individuals may experience serious side effects while using Minipress. These side effects may require immediate medical attention. If you experience any of the following, contact your healthcare provider or seek emergency medical help:

  • Severe dizziness, fainting, or lightheadedness, especially after the first dose.
  • Chest pain.
  • Shortness of breath or swelling due to heart failure.
  • Painful or prolonged erection (priapism).
  • Allergic reactions such as hives, itching, skin rash, or swelling of the face or throat.
  • Signs of orthostatic hypotension (a sudden drop in blood pressure when standing up).
  • Eye pain or vision changes (may occur during or after cataract surgery).

These are not all of the possible side effects of Minipress. You should always seek medical advice from your healthcare provider for any questions or concerns about your medical condition or treatment. Read all patient information, medication guides, or drug information sheets that come with this medication. You can also report adverse effects to the Food and Drug Administration at www.fda.gov/medwatch or 1-800-FDA-1088.

Before starting Minipress, it is crucial to discuss any existing health conditions with your healthcare provider. You should be sure that your healthcare provider is aware of all your medical conditions, including:

  • Heart problems such as heart failure, angina, or irregular heartbeat.
  • Low blood pressure or a history of fainting.
  • Kidney or liver disease.
  • Eye conditions such as cataracts or planned cataract surgery (due to risk of intraoperative floppy iris syndrome).
  • A history of priapism or erectile dysfunction.
  • Sensitivity or allergic reaction to alpha blockers.

Minipress should not be used if you have a known allergy to prazosin hydrochloride or any component of the formulation.

Minipress typically begins to lower blood pressure within a few hours of the first dose. However, the full antihypertensive effect may take several days of regular use. For conditions such as benign prostatic hyperplasia or PTSD-related symptoms, noticeable improvement may take one to two weeks.

Your doctor may adjust the dosage over time based on your blood pressure readings and response to treatment.

When Minipress is taken with other prescription drugs, over-the-counter medications, vitamins, and supplements, it may change how they work or increase the frequency or severity of side effects. Make sure that you tell your healthcare professional about anything that you are taking to avoid any negative drug interactions, including:

  • Other antihypertensive agents (such as beta-blockers like propranolol or diuretics).
  • Phosphodiesterase inhibitors are used for erectile dysfunction (such as sildenafil, tadalafil, or vardenafil).
  • Medications that lower heart rate or blood pressure.
  • Over-the-counter cold or allergy products containing pseudoephedrine or phenylephrine.
  • Supplements that affect blood pressure, such as those containing L-arginine or yohimbine.
  • Alcohol can intensify dizziness and low blood pressure.

Minipress (prazosin hydrochloride) is available in the following dosage forms and strengths:

1 mg capsules

2 mg capsules

5 mg capsules

Your healthcare provider will choose the right dose for your condition. The typical starting dose for adults with hypertension is 1 mg at bedtime, gradually increased based on response. Never adjust your dose without medical advice.

Store Minipress capsules at room temperature, typically between 20°C and 25°C (68°F to 77°F). Keep the medication away from moisture, heat, and direct light.

Do not store it in the bathroom. Keep all medications out of the reach of children and pets.

Minipress is manufactured by Pfizer Inc.

Yes. There are generic versions of Minipress (prazosin hydrochloride) available.

Do not stop taking Minipress without talking to your healthcare provider. Stopping suddenly can cause your blood pressure to rise again, which may increase the risk of a heart attack or stroke.

If your doctor decides to discontinue treatment, the dose will usually be reduced gradually to prevent withdrawal symptoms or rebound hypertension.

Talk to your doctor if you are pregnant or planning to become pregnant. Studies in humans are limited, and Minipress should only be used during pregnancy if the potential benefits outweigh the possible risks to the baby.

Talk to your doctor if you are breastfeeding or plan to breastfeed. Small amounts of prazosin may pass into breast milk. Your healthcare provider will help determine whether to continue treatment or stop breastfeeding based on your health needs and your baby’s safety.q

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Important information about buying Minipress from UniversalDrugstore™

Once you complete your order, we process, verify, and dispatch your medication. You’ll receive email updates at each stage, including tracking details once your order ships. If any additional documentation is needed (such as a valid prescription), we’ll contact you promptly. Once approved, your order is charged and delivered directly to your doorstep.

Orders are typically processed within 1–3 business days once all required documents are received and approved. Standard delivery times range from 10–18 business days, depending on your location.

Yes! Once your medication ships, you will receive an email with tracking information so you can monitor your shipment every step of the way.

Our Customer Care team is available 24/7 to assist with any order-related concerns or questions. If you experience delays, missing items, or need support, contact us using the details provided in your confirmation email.

All orders are shipped in discreet, plain packaging to protect your privacy. Medications are securely packaged to prevent damage and ensure they arrive in top condition.

Yes. We use cold-chain shipping methods to safely transport temperature-sensitive medications, ensuring they maintain proper storage conditions throughout delivery.

Shipping costs vary depending on your location and shipping method. Free shipping promotions may be available—check the checkout page for the latest offers. Orders above $100 going to a US destination will receive free shipping.

Currently, we do not bill Medicare or Medicaid directly. However, we provide detailed receipts and documentation that you can submit to your insurance provider for potential reimbursement.

Universal Drugstore does not bill private health insurance directly, but we provide a detailed invoice that you can submit to your insurer for possible reimbursement. Many insurers will accept Universal Drugstore’s documents, but if you have any questions, check with your insurance company prior to purchasing.

We use advanced SSL encryption and secure payment processing to ensure that all transactions are 100% protected against fraud and unauthorized access.

Universal Drugstore offers many generic alternatives that provide the same active ingredients at a lower cost. Search for your medication and compare pricing for generic vs. brand-name options. Generic availability depends on the medication.

If your medication requires a prescription, you must upload it online, via email, or fax. Over-the-counter (OTC) medications do not require a prescription. All prescription medication purchases require a valid and approved prescription. The Universal Drugstore customer care team can contact your doctor directly to get your prescription, and ensure all information is up to date.

Yes! You can add multiple medications to your cart, including prescription, OTC, and pet medications, and complete your purchase in a single checkout process.

Yes! If your prescription includes refills, you can reorder quickly by logging into your account and selecting your medication for a hassle-free refill process. Always refill your medication proactively and ontime, to ensure you do not run out of important medication.

Yes! We offer:

  • Up to 80% savings on medications
  • Price match guarantee – we’ll match competitor pricing on qualifying medications
  • 10% off your first order for new customers

We offer 24/7 customer support via phone, email, and chat. Visit our Contact Us page for assistance with ordering, shipping, or medication questions.

Medical Disclaimer

The information, including but not limited to, text, graphics, images and other material contained on this website are for informational purposes to increase health awareness only. No material on this site is intended to be a substitute for professional medical advice, diagnosis or treatment. 



Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment and before undertaking a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.