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Prazosin HCL 5 mg Capsule, 30-count — NDC 72189-470-30 (Billing 72189-0470-30)

by Direct_Rx · 30 CAPSULE in 1 BOTTLE

This is a package of 30 capsules of Prazosin HCL 5 mg Capsule from Direct_Rx, marketed since May 2023 and currently FDA-listed. It is this product's only package size.

NDC 72189-0470-30
🏷️ FDA NDC (as labeled) 72189-470-30 billing pads the product segment with a zero
Rx only Generic On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 72189-470-30
Product NDC 72189-470
11-digit billing NDC 72189047030
NCPDP billing unit EA — each (per item)
RxCUI 198141
UNII X0Z7454B90
Application # ANDA215697
SPL Set ID fb6db16d-3768-631b-e053-6294a90a1cee
Established class (EPC) alpha-Adrenergic Blocker
Mechanism of action Adrenergic alpha-Antagonists
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2023-05-11
Route ORAL
Dosage form CAPSULE
Substance PRAZOSIN HYDROCHLORIDE
TE code (Orange Book) AB · RLD · RS

Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification

GCN Seq No 000293
GCN 01252
HICL code 000091
Ingredient (HICL) Prazosin Hcl
HIC1 code J
Therapeutic class — broad (HIC1) Autonomic Nervous System
HIC2 code J7
Therapeutic class — intermediate (HIC2) Antiadrenergics
HIC3 code J7B
Therapeutic class — specific (HIC3) Alpha-Adrenergic Blocking Agents
AHFS code 24:16.00.00
AHFS class Alpha-Adrenergic Blocking Agents (24:16)
FDB label name PRAZOSIN 5 MG CAPSULE
FDB brand name Prazosin Hcl
Legend status F — Federal legend — prescription drug or device
Quick answers
  • GSN (GCN sequence number): 000293
  • GCN: 01252
  • HICL (First Databank): 000091
  • AHFS class code: 24:16.00.00
  • RxCUI (RxNorm): 198141
Why two NDCs? The FDA registers this code as 72189-470-30 — a 5-3-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the product segment → 72189-0470-30. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

RxNorm drug class

This medicine belongs to the alpha-Adrenergic Blocker class.

Pharmacologic class alpha-Adrenergic Blocker
Drug family (ATC) Alpha-adrenoreceptor antagonists
How it works Adrenergic alpha-Antagonists
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

Clinical

Label name PRAZOSIN 5 MG CAPSULE Ingredient Prazosin Hcl
📗 Our plain-language guide HelloPharmacist
  • It treats high blood pressure. Bringing your pressure down lowers your risk of stroke and heart attack. It can be taken alone or with other blood pressure medicines like water pill...
  • Prazosin capsules are taken by mouth, usually two or three times a day at first. Your prescriber will start you low and raise the dose slowly based on your blood pressure. Take it...
  • Prazosin can drop your blood pressure quickly, especially in the first hours after a first dose or an increase. Dizziness is common, and fainting is less common. Be careful standin...
  • Dizziness, headache, drowsiness, low energy, weakness, palpitations and nausea are the most common. These often fade with continued use. Call your doctor if they are bothersome or...
📖 Read our full Prazosin guide →

Supplement & herbal interactions

🌿 Drug–supplement interaction checker →
1
Nutrient depletion considerations

Prazosin may be associated with lower levels of 1 nutrient — worth a chat with your pharmacist, not a cause for alarm.

🧪 Full Prazosin nutrient depletion report →
An association is not a deficiency. Educational only — don't start or stop anything without professional guidance.
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price systemPer eachPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · Q2 2026 $0.2217 $6.65 / 30 capsules
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

Packaging — all sizes for this product

Package NDCDescription Marketing startMarketing endStatus
72189-0470-30 You're viewing this Main listing 30 CAPSULE in 1 BOTTLE 2023-05-11 — Active

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Prazosin Hydrochloride 5 mg 00093-4069-01 Teva 100 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 00378-3205-01 Mylan 100 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 00904-7022-61 Major 100 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 51079-0632-20 Mylan 100 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 59651-0273-01 Aurobindo 100 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 60687-0572-32 American 20 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 62332-0693-31 Alembic 100 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 66993-0433-85 Prasco 90 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 70010-0086-01 Granules 100 capsules $0.134 AB Availability likely —
Prazosin hydrochloride 5 mg 70377-0068-11 Biocon 100 capsules $0.134 AB Availability likely —
prazosin hydrochloride 5 mg 70756-0440-11 Lifestar 100 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 70954-0021-10 ANI 100 capsules $0.134 AB Availability likely —
prazosin hydrochloride 5 mg 72205-0277-91 Novadoz 100 capsules $0.134 AB Availability likely —
Prazosin Hydrochloride 5 mg 76282-0723-01 Exelan 100 capsules $0.134 AB Availability likely —
Prazosin 5 mg 00527-4182-37 Lannett 100 capsules — — FDA listed —
Prazosin Hydrochloride 5 mg 10135-0668-01 Marlex 100 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 43063-0248-30 PD-Rx 30 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 46708-0693-31 Alembic 100 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 48433-0086-20 Safecor 100 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 67046-0781-03 Coupler 30 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 67046-1678-03 Coupler 30 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 68788-7849-01 Preferred 100 capsules — AB Discontinued —
prazosin hydrochloride 5 mg 68788-8660-01 Preferred 100 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 70518-1443-02 REMEDYREPACK 50 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 70518-3352-00 REMEDYREPACK 100 capsules — AB FDA listed —
prazosin hydrochloride 5 mg 70518-4288-00 REMEDYREPACK 30 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 71205-0585-30 Proficient 30 capsules — AB FDA listed —
prazosin hydrochloride 5 mg 71335-2348-01 Bryant 60 capsules — AB FDA listed —
Prazosin Hydrochloride 5 mg 71610-0829-27 Aphena 1250 capsules — AB FDA listed —
Prazosin HCL 5 mgthis 72189-0470-30 Direct_Rx 30 capsules — AB FDA listed —
prazosin hydrochloride 5 mg 76420-0526-01 ASCLEMED 100 capsules — AB FDA listed —
prazosin hydrochloride 5 mg 82804-0089-90 Proficient 90 capsules — AB FDA listed —
About this product: this is a generic version of the medicine. FDA equivalence ratings are shown when available, and other versions are listed above, least expensive first.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

Availability & generic status

🏛️
2023
On the market since
May 2023
📍
2026
Currently FDA-listed
3 years listed
🔓
·
Generic on the market
this product is a generic
✅This is a generic drug

This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.

Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

What it looks like

Color blue
ShapeCapsule
ImprintLifestar;440
Size18 mm
ScoringNot scored
One label can cover several strengths, so colors may be combined — always confirm a loose pill against the dispensed prescription label or a pharmacist.
Where does this data come from?
Physical description (imprint, shape, color, scoring, coating) from this product’s FDA Structured Product Labeling (SPL), mirrored from DailyMed / openFDA.

Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.

  • UNII OP1R32D61U
    Microcrystalline cellulose is a purified form of cellulose, a natural fiber from plant sources. It acts as a binder and filler in tablets and capsules, helping hold ingredients together and give the medicine its shape and size.
  • UNII H3R47K3TBD
    FD&C Blue No. 1 is a synthetic blue dye approved for use in foods and medicines. It serves as a colorant to give the medication its distinctive appearance and help with product identification.
  • UNII PN2ZH5LOQY
    A synthetic red dye approved by the FDA for use in foods, medicines, and cosmetics. It serves as a colorant to make tablets, capsules, and liquids visually distinctive for product identification.
  • UNII XM0M87F357
    A dark iron oxide compound that gives medicines their black or dark color. It's used as a colorant in tablets and capsules to help identify the product and make it visually distinctive.
  • UNII 2G86QN327L
    Gelatin is a protein derived from animal collagen, commonly used in medicines as a gelling agent and capsule material. It helps create soft or hard capsule shells that hold and release medication, and can also thicken liquid formulations.
  • UNII EWQ57Q8I5X
    Lactose monohydrate is a natural sugar derived from milk. It serves as a filler and binder in tablets and capsules, helping create the proper size, texture, and consistency of the medicine.
  • UNII 70097M6I30
    Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
  • UNII WZH3C48M4T
    Potassium hydroxide is a strong alkaline chemical used in medicines to adjust and maintain the pH level of liquid formulations, helping keep the product stable and the active ingredients effective.
  • UNII 46N107B71O
    Shellac is a natural resin secreted by the lac beetle. It's used as a coating on tablets and capsules to control how quickly the medicine dissolves and to improve appearance and stability.
  • UNII ETJ7Z6XBU4
    Silicon dioxide is a naturally occurring mineral used as a glidant and anti-caking agent. It helps powder ingredients flow smoothly and prevents clumping during manufacturing and storage.
  • UNII 368GB5141J
    A detergent and foaming agent derived from coconut or palm oil. In medications, it helps break down and mix oil and water-based ingredients, aids in tablet disintegration, and improves how the drug dissolves and spreads in the mouth or digestive system.
  • UNII 15FIX9V2JP
    Titanium dioxide is a bright white mineral powder commonly used as a colorant and opacifying agent. It makes pills and tablets white or lighter in color and helps make coatings non-transparent.

12 inactive ingredients listed in the exact product block matched to this NDC.

Where does this data come from?
Data sourced from official FDA Structured Product Labeling (SPL) via DailyMed — ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

Manufacturer & labeler

LabelerDirect_Rx
Application holderMANKIND PHARMA LTD
FDA applicationANDA215697 (ANDA)
Labeler code72189
First marketedMay 2023
Product typeHuman Prescription Drug
Portfolio355 products on file
The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Very long sections are excerpted here and marked; the full text is on DailyMed (linked in the sources below). Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration ⛔ Contraindications ⚠️ Warnings 🤒 Adverse Reactions 🆘 Overdosage 🧬 Clinical Pharmacology 📦 How Supplied / Storage and Handling 📋 Description ⚠️ Precautions 📚 References 📄 Package Label / Principal Display Panel
🎯 Indications and Usage ~2 min read ▾

Prazosin hydrochloride capsules are indicated for the treatment of hypertension, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions. These benefits have been seen in controlled trials of antihypertensive drugs from a wide variety of pharmacologic classes, including this drug.

Control of high blood pressure should be part of comprehensive cardiovascular risk management, including, as appropriate, lipid control, diabetes management, antithrombotic therapy, smoking cessation, exercise, and limited sodium intake. Many patients will require more than one drug to achieve blood pressure goals. For specific advice on goals and management, see published guidelines, such as those of the National High Blood Pressure Education Program's Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC).

Numerous antihypertensive drugs, from a variety of pharmacologic classes and with different mechanisms of action, have been shown in randomized controlled trials to reduce cardiovascular morbidity and mortality, and it can be concluded that it is blood pressure reduction, and not some other pharmacologic property of the drugs, that is largely responsible for those benefits. The largest and most consistent cardiovascular outcome benefit has been a reduction in the risk of stroke, but reductions in myocardial infarction and cardiovascular mortality also have been seen regularly.

Elevated systolic or diastolic pressure causes increased cardiovascular risk, and the absolute risk increase per mmHg is greater at higher blood pressures, so that even modest reductions of severe hypertension can provide substantial benefit. Relative risk reduction from blood pressure reduction is similar across populations with varying absolute risk, so the absolute benefit is greater in patients who are at higher risk independent of their hypertension (for example, patients with diabetes or hyperlipidemia), and such patients would be expected to benefit from more aggressive treatment to a lower blood pressure goal.

Some antihypertensive drugs have smaller blood pressure effects (as monotherapy) in black patients, and many antihypertensive drugs have additional approved indications and effects (e.g., on angina, heart failure, or diabetic kidney disease). These considerations may guide selection of therapy. Prazosin hydrochloride capsules can be used alone or in combination with other antihypertensive drugs such as diuretics or beta-adrenergic blocking agents.

⏱️ Dosage and Administration 195 words ▾

The dose of prazosin hydrochloride capsules should be adjusted according to the patient's individual blood pressure response. The following is a guide to its administration: Initial Dose 1 mg two or three times a day (see WARNINGS.) Maintenance Dose Dosage may be slowly increased to a total daily dose of 20 mg given in divided doses. The therapeutic dosages most commonly employed have ranged from 6 mg to 15 mg daily given in divided doses.

Doses higher than 20 mg usually do not increase efficacy, however a few patients may benefit from further increases up to a daily dose of 40 mg given in divided doses. After initial titration some patients can be maintained adequately on a twice daily dosage regimen. Use With Other Drugs When adding a diuretic or other antihypertensive agent, the dose of prazosin hydrochloride capsules should be reduced to 1 mg or 2 mg three times a day and retitration then carried out.

Concomitant administration of prazosin hydrochloride capsules with a PDE-5 inhibitor can result in additive blood pressure lowering effects and symptomatic hypotension; therefore, PDE-5 inhibitor therapy should be initiated at the lowest dose in patients taking prazosin hydrochloride capsules.

⛔ Contraindications 19 words ▾

Prazosin hydrochloride capsules are contraindicated in patients with known sensitivity to quinazolines, prazosin, or any of the inert ingredients.

⚠️ Warnings ~2 min read ▾

As with all alpha-blockers, prazosin hydrochloride capsules may cause syncope with sudden loss of consciousness. In most cases, this is believed to be due to an excessive postural hypotensive effect, although occasionally the syncopal episode has been preceded by a bout of severe tachycardia with heart rates of 120–160 beats per minute. Syncopal episodes have usually occurred within 30 to 90 minutes of the initial dose of the drug; occasionally, they have been reported in association with rapid dosage increases or the introduction of another antihypertensive drug into the regimen of a patient taking high doses of prazosin hydrochloride capsules.

The incidence of syncopal episodes is approximately 1% in patients given an initial dose of 2 mg or greater. Clinical trials conducted during the investigational phase of this drug suggest that syncopal episodes can be minimized by limiting the initial dose of the drug to 1 mg, by subsequently increasing the dosage slowly, and by introducing any additional antihypertensive drugs into the patient's regimen with caution (see DOSAGE AND ADMINISTRATION). Hypotension may develop in patients given prazosin hydrochloride capsules who are also receiving a beta-blocker such as propranolol.

If syncope occurs, the patient should be placed in the recumbent position and treated supportively as necessary. This adverse effect is self-limiting and in most cases does not recur after the initial period of therapy or during subsequent dose titration. Patients should always be started on the 1 mg capsules of prazosin hydrochloride capsules.

The 2 and 5 mg capsules are not indicated for initial therapy. More common than loss of consciousness are the symptoms often associated with lowering of the blood pressure, namely, dizziness and lightheadedness. The patient should be cautioned about these possible adverse effects and advised what measures to take should they develop.

The patient should also be cautioned to avoid situations where injury could result should syncope occur during the initiation of prazosin hydrochloride capsules therapy. Priapism Prolonged erections and priapism have been reported with alpha-1 blockers including prazosin in post marketing experience. In the event of an erection that persists longer than 4 hours, seek immediate medical assistance.

If priapism is not treated immediately, penile tissue damage and permanent loss of potency could result.

🤒 Adverse Reactions ~2 min read ▾

Clinical trials were conducted on more than 900 patients. During these trials and subsequent marketing experience, the most frequent reactions associated with prazosin hydrochloride capsules therapy are: dizziness 10.3%, headache 7.8%, drowsiness 7.6%, lack of energy 6.9%, weakness 6.5%, palpitations 5.3%, and nausea 4.9%. In most instances, side effects have disappeared with continued therapy or have been tolerated with no decrease in dose of drug.

Less frequent adverse reactions which are reported to occur in 1–4% of patients are: Gastrointestinal: vomiting, diarrhea, constipation. Cardiovascular: edema, orthostatic hypotension, dyspnea, syncope. Central Nervous System: vertigo, depression, nervousness.

Dermatologic: rash. Genitourinary: urinary frequency. EENT: blurred vision, reddened sclera, epistaxis, dry mouth, nasal congestion.

In addition, fewer than 1% of patients have reported the following (in some instances, exact causal relationships have not been established): Gastrointestinal: abdominal discomfort and/or pain, liver function abnormalities, pancreatitis. Cardiovascular: tachycardia. Central Nervous System: paresthesia, hallucinations.

Dermatologic: pruritus, alopecia, lichen planus. Genitourinary: incontinence, impotence, priapism. EENT: tinnitus.

Other: diaphoresis, fever, positive ANA titer, arthralgia. Single reports of pigmentary mottling and serous retinopathy, and a few reports of cataract development or disappearance have been reported. In these instances, the exact causal relationship has not been established because the baseline observations were frequently inadequate.

In more specific slit-lamp and funduscopic studies, which included adequate baseline examinations, no drug-related abnormal ophthalmological findings have been reported. Literature reports exist associating prazosin hydrochloride capsules therapy with a worsening of pre-existing narcolepsy. A causal relationship is uncertain in these cases.

In post-marketing experience, the following adverse events have been reported: Autonomic Nervous System: flushing. Body As A Whole: allergic reaction, asthenia, malaise, pain. Cardiovascular, General: angina pectoris, hypotension.

Endocrine: gynecomastia. Heart Rate/Rhythm: bradycardia. Psychiatric: insomnia.

Skin/Appendages: urticaria. Vascular (Extracardiac): vasculitis. Vision: eye pain.

Special Senses: During cataract surgery, a variant of small pupil syndrome known as Intraoperative Floppy Iris Syndrome (IFIS) has been reported in association with alpha-1 blocker therapy (see PRECAUTIONS). To report SUSPECTED ADVERSE REACTIONS, contact Lifestar Pharma LLC at 1-888-995-4337 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

🆘 Overdosage 111 words ▾

Accidental ingestion of at least 50 mg of prazosin hydrochloride capsules in a two year old child resulted in profound drowsiness and depressed reflexes. No decrease in blood pressure was noted. Recovery was uneventful.

Should overdosage lead to hypotension, support of the cardiovascular system is of first importance. Restoration of blood pressure and normalization of heart rate may be accomplished by keeping the patient in the supine position. If this measure is inadequate, shock should first be treated with volume expanders.

If necessary, vasopressors should then be used. Renal function should be monitored and supported as needed. Laboratory data indicate prazosin hydrochloride capsules are not dialysable because it is protein bound.

🧬 Clinical Pharmacology ~1 min read ▾

The exact mechanism of the hypotensive action of prazosin is unknown. Prazosin causes a decrease in total peripheral resistance and was originally thought to have a direct relaxant action on vascular smooth muscle. Recent animal studies, however, have suggested that the vasodilator effect of prazosin is also related to blockade of postsynaptic alpha-adrenoceptors.

The results of dog forelimb experiments demonstrate that the peripheral vasodilator effect of prazosin is confined mainly to the level of the resistance vessels (arterioles). Unlike conventional alpha-blockers, the antihypertensive action of prazosin is usually not accompanied by a reflex tachycardia. Tolerance has not been observed to develop in long term therapy.

Hemodynamic studies have been carried out in man following acute single dose administration and during the course of long term maintenance therapy. The results confirm that the therapeutic effect is a fall in blood pressure unaccompanied by a clinically significant change in cardiac output, heart rate, renal blood flow and glomerular filtration rate. There is no measurable negative chronotropic effect.

In clinical studies to date, prazosin hydrochloride has not increased plasma renin activity. In man, blood pressure is lowered in both the supine and standing positions. This effect is most pronounced on the diastolic blood pressure.

Following oral administration, human plasma concentrations reach a peak at about three hours with a plasma half-life of two to three hours. The drug is highly bound to plasma protein. Bioavailability studies have demonstrated that the total absorption relative to the drug in a 20% alcoholic solution is 90%, resulting in peak levels approximately 65% of that of the drug in solution.

Animal studies indicate that prazosin hydrochloride is extensively metabolized, primarily by demethylation and conjugation, and excreted mainly via bile and feces. Less extensive human studies suggest similar metabolism and excretion in man. In clinical studies in which lipid profiles were followed, there were generally no adverse changes noted between pre-and post-treatment lipid levels.

📦 How Supplied / Storage and Handling ~1 min read ▾

Prazosin Hydrochloride Capsules, USP are available containing prazosin hydrochloride, USP equivalent to 1 mg, 2 mg, or 5 mg of prazosin. The 1 mg capsule is White opaque cap/ white opaque body, hard gelatin capsule imprinted with [Image] on cap and "429" on body with black ink containing white to off white powder. They are available as follows: NDC 70756-429-11 bottles of 100 capsules.

This package is child resistant NDC 70756-429-12 bottles of 1000 capsules. This package is not child resistant The 2 mg capsule is Pink opaque cap/ Pink opaque body, hard gelatin capsule imprinted with [Image] on cap and "430" on body with black ink containing white to off white powder. They are available as follows: NDC 70756-430-11 bottles of 100 capsules.

This package is child resistant NDC 70756-430-12 bottles of 1000 capsules. This package is not child resistant The 5 mg capsule is Blue opaque cap/ Blue opaque body, hard gelatin capsule imprinted with [Image] on cap and "440" on body with black ink containing white to off white powder. They are available as follows: NDC 70756-440-11 bottles of 100 capsules.

This package is child resistant NDC 70756-440-12 bottles of 1000 capsules. This package is not child resistant Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.] Protect from light. Dispense in a tight, light-resistant container as defined in the USP Keep this and all medication out of the reach of children.

📋 Description 183 words ▾

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: [Chemical Structure] Molecular Formula: C19H21N5O4•HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86.

Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide.

In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No.

1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac.

FDA approved dissolution test specifications differ from USP.

⚠️ Precautions ~3 min read ▾

General Intraoperative Floppy Iris Syndrome (IFIS) has been observed during cataract surgery in some patients treated with alpha-1 blockers. This variant of small pupil syndrome is characterized by the combination of a flaccid iris that billows in response to intraoperative irrigation currents, progressive intraoperative miosis despite preoperative dilation with standard mydriatic drugs, and potential prolapse of the iris toward the phacoemulsification incisions. The patient's ophthalmologist should be prepared for possible modifications to the surgical technique, such as the utilization of iris hooks, iris dilator rings, or viscoelastic substances.

There does not appear to be a benefit of stopping alpha-1 blocker therapy prior to cataract surgery. Information for Patients Dizziness or drowsiness may occur after the first dose of this medicine. Avoid driving or performing hazardous tasks for the first 24 hours after taking this medicine or when the dose is increased.

Dizziness, lightheadedness, or fainting may occur, especially when rising from a lying or sitting position. Getting up slowly may help lessen the problem. These effects may also occur if you drink alcohol, stand for long periods of time, exercise, or if the weather is hot.

While taking prazosin hydrochloride capsules, be careful in the amount of alcohol you drink. Also, use extra care during exercise or hot weather, or if standing for long periods. Check with your physician if you have any questions.

Drug Interactions Prazosin hydrochloride capsules has been administered without any adverse drug interaction in limited clinical experience to date with the following: (1) cardiac glycosides– digitalis and digoxin; (2) hypoglycemics–insulin, chlorpropamide, phenformin, tolazamide, and tolbutamide; (3) tranquilizers and sedatives–chlordiazepoxide, diazepam, and phenobarbital; (4) antigout– allopurinol, colchicine, and probenecid; (5) antiarrhythmics–procainamide, propranolol (see WARNINGS however), and quinidine; and (6) analgesics, antipyretics and anti-inflammatories– propoxyphene, aspirin, indomethacin, and phenylbutazone.

Addition of a diuretic or other antihypertensive agent to prazosin hydrochloride capsules has been shown to cause an additive hypotensive effect. This effect can be minimized by reducing the prazosin hydrochloride capsules dose to 1 to 2 mg three times a day, by introducing additional antihypertensive drugs cautiously, and then by retitrating prazosin hydrochloride capsules based on clinical response. Concomitant administration of prazosin hydrochloride capsules with a phosphodiesterase-5 (PDE-5) inhibitor can result in additive blood pressure lowering effects and symptomatic hypotension (see DOSAGE AND ADMINISTRATION).

Drug/Laboratory Test Interactions In a study on five patients given from 12 to 24 mg of prazosin per day for 10 to 14 days, there was an average increase of 42% in the urinary metabolite of norepinephrine and an average increase in urinary VMA of 17%. Therefore, false positive results may occur in screening tests for pheochromocytoma in patients who are being treated with prazosin. If an elevated VMA is found, prazosin should be discontinued and the patient retested after a month.

Laboratory Tests In clinical studies in which lipid profiles were followed, there were generally no adverse changes noted between pre-and post-treatment lipid levels. Carcinogenesis, Mutagenesis, Impairment of Fertility: No carcinogenic potential was demonstrated in an 18 month study in rats with prazosin hydrochloride capsules at dose levels more than 225 times the usual maximum recommended human dose of 20 mg per day. Prazosin hydrochloride capsules was not mutagenic in in vivo genetic toxicology studies.

In a fertility and general reproductive performance study in rats, both males and females, treated with 75 mg/kg (225 times the usual maximum recommended human dose), demonstrated decreased fertility, while those treated with 25 mg/kg (75 times the usu… [Excerpted — this section continues on DailyMed.]

📚 References 44 words ▾

Lubbe, WF, and Hodge, JV: New Zealand Med J, 94 (691) 169–172, 1981. Davey, DA, and Dommisse, J: S.A. Med J, Oct. 4, 1980 (551–556). Manufactured for: Lifestar Pharma LLC 1200 MacArthur Blvd. Mahwah, NJ 07430 USA Made in India Revised: August 2021, V-03

📄 Package Label / Principal Display Panel 1 words ▾

72189-470-30

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

Medicare Part D spend CMS · PART D · 2026 (Q1)

Medicare Part D (outpatient prescription) spending for Prazosin HCl — the program that covers self-administered drugs. 14 manufacturers.
⚠️ Drug-level data: CMS publishes Part D spending by drug, not by NDC — these figures combine every manufacturer, strength and package size sold under the name Prazosin HCl. That’s a different level of aggregation than the Medicaid card above, which is specific to this exact 11-digit NDC (pack size included), so the two aren’t directly comparable.
Period
Total Part D spend
$6.71M
Claims incl. refills
344K
Beneficiaries
165.2K
Spend / beneficiary
$40.64
Spend / claim
$19.52
Trend by period
💵 About the dollar figures: spending is what Part D plans paid before confidential manufacturer rebates, so the program’s real net cost is lower. A blank patient count means fewer than 11 people — CMS hides counts that small to protect privacy. Source: CMS Medicare Quarterly Part D Spending by Drug (data.cms.gov), updated quarterly.

About this NDC listing & data coverage

Finished prescription product
What data is (and isn’t) available for this NDC — tap to expand
NDC identity (package / product / labeler codes) ✓ Available
Labeler ✓ Available
Product & package description ✓ Available
Marketing category & status ✓ Available
Active ingredient / dosage form / route ✓ Available
FDA label (SPL via DailyMed) ✓ Available
Package photos — Not published for this NDC No photo available yet for this listing.
Inactive ingredients (structured) ✓ Available
NADAC pharmacy acquisition price (CMS) — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data ✓ Available
HCPCS J-code billing crosswalk — Not published for this NDC Most self-administered / retail products have no J-code — that is normal.
Medicaid utilization (CMS SDUD) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The form printed on the packaging and shown on DailyMed is the one the FDA registered. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero and the dashes are dropped. The Identity section at the top of this page lists each form of this code.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Direct_Rx. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
Direct_Rx is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.
← 72189-0469-30 · Direct_Rx 72189-0471-30 · Direct_Rx →
For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.