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Terazosin

Terazosin is an alpha-1 blocker used to treat the symptoms of an enlarged prostate (benign prostatic hyperplasia, or BPH) and high blood pressure.

Brand names HytrinTezruly
Drug class Alpha-adrenergic Blocker
Rx Forms 2
Dr. Brian Staiger, PharmD, BCPS
Reviewed by Last reviewed Jul 10, 2026 Content updated Oct 2, 2026
🧬 Where this information comes from Click to expand

The clinical label records used on this page are FDA-filed Structured Product Labeling (SPL) retrieved through openFDA. We identified 52 clinical label sets within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. Forms, routes, brands, labelers, strengths, and NDC product-record counts are built separately from matching FDA National Drug Code Directory records. The linked DailyMed document is a representative official source for verification, not the page’s only clinical source. View the linked label on DailyMed →

✓No current FDA shortage listed · checked Oct 8, 2026
Terazosin at a glance The quick version — the full detail is in the Patient Information Guide below.
Dr. Brian Staiger, PharmD, BCPS
The Pharmacist’s Take By · Clinical pharmacist · Written

Terazosin is an older alpha-1 blocker (on the market since the late 1980s and available as a generic) that relaxes muscle in the prostate and blood vessels, easing urine flow from an enlarged prostate (BPH) and lowering high blood pressure, where it is usually an add-on. Most people settle in well, though dizziness, tiredness and a stuffy nose are common. Watch for a sudden blood pressure drop that can cause fainting, most likely after the first dose, a dose increase or a restart, so take the first dose at bedtime. Tell your prescriber about other blood pressure medicines or erectile dysfunction drugs, which deepen that drop.

Clinical pearls

  • Avoid driving or hazardous tasks for 12 hours after the first dose, any dose increase, or a restart.
  • If you miss several days in a row, do not restart at your old dose, because the label calls for starting over low.
  • Tell your eye surgeon before cataract surgery, since terazosin can cause floppy iris syndrome, which makes the operation harder.
  • A painful erection lasting hours is an emergency, so go to an emergency room quickly to prevent permanent impotence.
How you get itPrescription only
Comes asCapsule, Oral solution
Earliest FDA record1987
Companies listing it with the FDA20
FDA label last updatedApr 18, 2025
FDA’s strongest warning (boxed)None on the label

Patient information guide A plain-language walkthrough of Terazosin, written from its FDA label.

What Terazosin is used for

▾

Terazosin is used for these conditions:

  • Symptoms of benign prostatic hyperplasia (BPH): Terazosin capsules and Tezruly oral solution.
  • High blood pressure: Terazosin capsules (alone or with other blood pressure medicines) and Tezruly oral solution (adults, alone or with others).

How Terazosin works

▾

Terazosin blocks alpha-1 receptors, which control muscle tightness. In the prostate and bladder neck, this relaxes muscle and eases urine flow. In blood vessels, it lowers resistance and so lowers blood pressure.

Few of these receptors are in the bladder body, so terazosin eases blockage without weakening bladder contraction.

Terazosin dosage

▾

Terazosin is taken by mouth, usually once daily, with the first dose at bedtime. Your prescriber raises the dose slowly based on your symptoms or blood pressure.

  • Capsules and Tezruly oral solution have separate labels; follow the instructions for your product.
  • For BPH, it may take several weeks at the full dose to judge benefit.
  • If you stop for more than a few days, ask before restarting.

Dosing details from the FDA-approved label

From the Terazosin prescribing information (“Dosage and Administration”). Doses are set by your prescriber for your product, condition, kidney function and age — never change a dose on your own.

  • Benign prostatic hyperplasia (BPH)
    • Initial dose 1 mg at bedtime, which should not be exceeded as an initial dose
    • Increase in a stepwise fashion to 2 mg, 5 mg, or 10 mg once daily to achieve the desired improvement of symptoms and/or flow rates
    • Doses of 10 mg once daily are generally required for a clinical response
    • Treatment with 10 mg for a minimum of 4 to 6 weeks may be required to asses
    • Maximum: Insufficient data to support doses higher than 20 mg daily
    • If discontinued for more than a few days (several days or longer), restart using the initial dosing regimen; follow patients closely during initial administration
  • Hypertension
    • Initial dose 1 mg at bedtime, which should not be exceeded
    • Slowly increase to achieve the desired blood pressure response
    • Usual recommended dose range is 1 mg to 5 mg once a day
    • Some patients may benefit from doses as high as 20 mg per day
    • If response is substantially diminished at 24 hours, consider an increased dose or a twice daily regimen
    • Dose inter
    • Maximum: Doses over 20 mg do not appear to provide further blood pressure effect; doses over 40 mg have not been studied
    • If discontinued for more than a few days (several days or longer), restart using the initial dosing regimen; Tezruly oral solution may be taken with or without food
Read the label’s full dosing text

2 DOSAGE & ADMINISTRATION For the treatment of BPH: Initiate therapy at 1 mg orally once daily at bedtime. Titrate the dose upwards step-wise from 2 mg to 10 mg once daily. Doses of 10 mg once daily are generally required for a clinical response. Data is insufficient to support doses greater than 20 mg once daily. (2.1) For the treatment hypertension: Initiate therapy at 1 mg orally once daily at bedtime. Usual recommended dose range is 1 mg to 5 mg once daily. If response is substantially diminished at 24 hours, increase the dose or use twice daily. Dose may be titrated as needed up to 20 mg once daily. (2.2) If terazosin is discontinued for more than a few days, restart using the initial dosing regimen. (2.1) 2.1 Recommended Dosage for Benign Prostatic Hyperplasia Initial Dose: 1 mg orally once daily at bedtime. This dose should not be exceeded as an initial dose. Closely follow patients during initial administration in order to minimize the risk of severe hypotensive response, including syncope. For administration instructions, see Dosage and Administration (2.3). Subsequent Doses: The dose should be increased in a stepwise fashion from 2 mg to 10 mg orally once daily to achieve the desired improvement of symptoms and/or flow rates. Doses of 10 mg once daily are generally required for a clinical response. Therefore, treatment with 10 mg for a minimum of 4 weeks to 6 weeks may be required to assess whether a beneficial response has been achieved. Although some patients responded to 20 mg per daily, data are insufficient to draw definitive conclusions about this dose. There are insufficient data to support the use of doses higher than 20 mg daily. If TEZRULY is discontinued for more than a few days, therapy should be restarted using the initial dosing regimen. For administration instructions, see Dosage and Administration (2.3). 2.2 Recommended Dosage for Hypertension Initial Dose: 1 mg orally once daily at bedtime. Do not exceed the initial dosing regimen to minimize the potential for severe hypotensive effects, including syncope. For administration instructions, see Dosage and Administration (2.3). Subsequent Doses: Slowly increase the dose to achieve the desired blood pressure response. The usual recommended dose range is 1 mg to 5 mg orally once daily; however, some patients may benefit from doses as high as 20 mg per day.

Excerpted — the section continues on the label. Read the full Dosage and Administration section on DailyMed →

Terazosin side effects

▾

Most side effects are mild to moderate. Common ones include:

Common side effects

  • Dizziness
  • Weakness or tiredness
  • Drowsiness
  • Stuffy nose
  • Nausea
  • Palpitations (pounding heartbeat)
  • Swelling in the legs or feet
  • Blurred vision

When to get medical help

  • Fainting or feeling like you may pass out, especially after the first dose, a dose increase, or restarting
  • Painful erection lasting hours that does not go away: go to an emergency room right away
  • Racing or irregular heartbeat
  • Severe dizziness or lightheadedness when standing
  • Signs of a serious allergic reaction, such as trouble breathing or swelling
  • Tell your eye surgeon you take terazosin if you plan cataract surgery

Terazosin warnings and precautions

▾
  • Fainting and low blood pressure: highest risk in the first 7 days, with dose increases, or after restarting.
  • Priapism: rare, but needs emergency care.
  • Cataract surgery: tell your eye surgeon you take terazosin.
  • Prostate cancer: should be ruled out before treating BPH.

Terazosin interactions

▾

Some medicines add to terazosin's blood pressure lowering.

  • Other blood pressure medicines, especially verapamil: can cause too-low blood pressure.
  • PDE-5 inhibitors: can cause low blood pressure; they should start at the lowest dose.

Interactions listed in the FDA-approved label

From the Terazosin prescribing information (“Drug Interactions”): what the manufacturer studied or reported to the FDA.

  • Other antihypertensive agents, especially the calcium channel blocker verapamil: Concomitant use carries the possibility of developing significant hypotension. Observe caution; dosage reduction and retitration of either agent may be necessary.
  • Phosphodiesterase-5 (PDE-5) inhibitors: Hypotension has been reported when terazosin was used with PDE-5 inhibitors.
  • Verapamil (pharmacokinetic study, n = 24): Terazosin mean AUC 0-24 increased 11% after the first verapamil dose and by 24% after 3 weeks of verapamil, with Cmax up 25% and Cmin up 32%; terazosin mean Tmax decreased from 1.3 hours to 0.8 hours. No statistically significant differences in verapamil level with and without terazosin.
  • Captopril (study, n = 6): Plasma disposition of captopril was not influenced by terazosin, and terazosin maximum plasma concentrations increased linearly with dose at steady-state with captopril.
  • Diuretics and beta-adrenergic blockers: In controlled trials terazosin was added to diuretics and several beta-blockers; no unexpected interactions were observed.
  • Analgesic/anti-inflammatory agents (e.g., acetaminophen, aspirin, codeine, ibuprofen, indomethacin): Used concomitantly in at least 50 patients; no interactions were observed.
  • Antibiotics (e.g., erythromycin, trimethoprim and sulfamethoxazole): Used concomitantly in at least 50 patients; no interactions were observed.
  • Anticholinergic/sympathomimetics (e.g., phenylephrine, phenylpropanolamine, pseudoephedrine): Used concomitantly in at least 50 patients; no interactions were observed.
  • Sedatives and tranquilizers (e.g., diazepam): Used concomitantly in at least 50 patients; no interactions were observed.
  • Antigout agents (e.g., allopurinol), antihistamines (e.g., chlorpheniramine), corticosteroids, gastrointestinal agents (e.g., antacids), hypoglycemics: Used concomitantly in at least 50 patients; no interactions were observed.
Read the label’s full interactions text

Drug Interactions In controlled trials, terazosin has been added to diuretics, and several beta-adrenergic blockers; no unexpected interactions were observed. Terazosin has also been used in patients on a variety of concomitant therapies; while these were not formal interaction studies, no interactions were observed. Terazosin has been used concomitantly in at least 50 patients on the following drugs or drug classes: 1) analgesic/anti-inflammatory (e.g., acetaminophen, aspirin, codeine, ibuprofen, indomethacin). 2) antibiotics (e.g., erythromycin, trimethoprim and sulfamethoxazole). 3) anticholinergic/sympathomimetics (e.g., phenylephrine hydrochloride, phenylpropanolamine hydrochloride, pseudoephedrine hydrochloride). 4) antigout (e.g., allopurinol). 5) antihistamines (e.g., chlorpheniramine). 6) cardiovascular agents (e.g., atenolol, hydrochlorothiazide, methyclothiazide, propranolol). 7) corticosteroids. 8) gastrointestinal agents (e.g., antacids). 9) hypoglycemics. 10) sedatives and tranquilizers (e.g., diazepam). Use with Other Drugs In a study (n = 24) where terazosin and verapamil were administered concomitantly, terazosin's mean AUC 0-24 increased 11% after the first verapamil dose and after 3 weeks of verapamil treatment it increased by 24% with associated increases in C max (25%) and C min (32%) means. Terazosin mean T max decreased from 1.3 hours to 0.8 hours after 3 weeks of verapamil treatment. Statistically significant differences were not found in the verapamil level with and without terazosin. In a study (n = 6) where terazosin and captopril were administered concomitantly, plasma disposition of captopril was not influenced by concomitant administration of terazosin and terazosin maximum plasma concentrations increased linearly with dose at steady-state after administration of terazosin plus captopril (see DOSAGE AND ADMINISTRATION ).

Excerpted — the section continues on the label. Read the full Drug Interactions section on DailyMed →

Not a complete list. The label covers the interactions the manufacturer studied or reported, and our own interaction database does not cover every medicine either. Bring your full medication list, including vitamins and herbal products, to your pharmacist.

Before taking Terazosin

▾
  • Do not take it if allergic to terazosin or its ingredients.
  • Tell your doctor about pregnancy or breastfeeding; data are limited.
  • Not established for children.
  • Older adults clear it more slowly.
  • Kidney impairment did not significantly affect elimination.

Terazosin overdose

▾

Overdose can cause low body temperature, slow heart rate, and low blood pressure. Management focuses on supporting the heart and circulation, including lying flat. Dialysis is unlikely to help. Call Poison Control at 1-800-222-1222.

What Terazosin does in the body

▾

Terazosin relaxes smooth muscle in the prostate and bladder neck, improving urine flow and symptoms without weakening bladder contraction. In studies, symptoms and peak flow improved from about week 2 and stayed improved over long-term use. In men with normal blood pressure, it did not lower blood pressure meaningfully.

How your body processes Terazosin

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Tezruly reaches peak blood levels in under an hour, and food did not make a clinically significant difference. Terazosin is highly protein bound and has a half-life of about 13 hours. It is mostly unchanged in the blood, and about 60% leaves in the feces and 40% in the urine.

How to store Terazosin

▾

Dispense in a tight, light-resistant container as defined in the USP. Store at 20° - 25°C (68° - 77°F) . Protect from light and moisture.

Written from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →

137

Supplements & herbs that interact with Terazosin

137 supplements and herbal products have documented interactions with Terazosin in the licensed clinical database we use. Most are manageable — but your pharmacist should know about everything you take, including vitamins and herbals.

Severity mix
  • Major · 4
  • Moderate · 112
  • Minor · 21
Every supplement checked against Terazosin — ranked by severity The full interaction hub: 4 major · 112 moderate · 21 minor · every one linked to its full report. Check Terazosin against your exact supplements

Educational information from a licensed clinical database (Natural Medicines) — see our data sources & update cadence. Not medical advice: an interaction being documented does not mean it will happen to you; do not start or stop medications or supplements without professional guidance.

1

Nutrient depletion considerations

Terazosin has been associated with lower levels of 1 nutrient in the clinical literature. This does not mean a deficiency will occur — it means these may be worth discussing with your pharmacist or healthcare provider, especially with long-term use.

See the full Terazosin nutrient depletion report

Educational information from a licensed clinical database (Natural Medicines) — not medical advice. Do not start or stop medications or supplements without professional guidance.

Terazosin: pharmacist answers to common questions

Quick, plain-English answers to the questions patients ask most about Terazosin — the kind of thing our pharmacy team would talk through with you at the counter.

What is terazosin for?

▾
It treats symptoms of an enlarged prostate (BPH) and high blood pressure. Your prescriber will tell you which one you are taking it for.

Why do I take the first dose at bedtime?

▾
The first dose can drop your blood pressure and cause dizziness or fainting. Taking it at bedtime lowers the chance of an injury. Avoid driving or hazardous tasks for 12 hours after the first dose, a dose increase, or restarting.

What if I miss several days?

▾
Do not just jump back to your usual dose. After more than a few days off, the label says to restart with the starting regimen. Call your prescriber or me for guidance.

What side effects are common?

▾
Dizziness, tiredness, drowsiness, stuffy nose, and nausea are common. Stand up slowly. Call your doctor if you faint or have a racing heartbeat.

Can I take it with erectile dysfunction medicines or other blood pressure pills?

▾
These can add to the blood pressure drop. Tell your prescriber about all of them, since doses may need adjusting. PDE-5 inhibitors should be started at the lowest dose.

Is there anything urgent to watch for?

▾
Yes. An erection lasting hours and painful needs emergency care right away. Also tell your eye surgeon you take terazosin before cataract surgery.

Is Terazosin available over the counter?

▾
No. Terazosin is a prescription medicine: every Terazosin product listed with the FDA is prescription only, so it is not sold over the counter. Your prescriber decides whether it is appropriate for you, and your pharmacist dispenses it.

When was Terazosin first available?

▾
The earliest FDA record we hold for Terazosin is from 1987: its first approval in Drugs@FDA or its earliest product listing in the NDC Directory, whichever is older. Many older medicines were in use before their first formal FDA approval, so this is the earliest date on record, not necessarily when Terazosin was first used.

Who makes Terazosin?

▾
20 companies currently list Terazosin products in the FDA's NDC Directory, including Aphena Pharma Solutions - Tennessee, LLC, Bryant Ranch Prepack, Amerisyn LLC. That count includes repackagers and distributors as well as manufacturers (companies that sell only the raw ingredient are not counted), so fewer companies actually make it; the label on your bottle names the one that supplied yours.

Answers drafted from the FDA-approved label with AI and reviewed by our pharmacy team. How we use AI →

More about Terazosin on HelloPharmacist

Detailed data & references for Terazosin Forms & strengths, pricing, billing codes, manufacturers, safety reports and sourcing — the data behind the page. Most people can stop here. Each section below opens on a tap.

Terazosin forms and strengths (how it comes)

Terazosin is available in 2 forms. Different forms and brands can have different approved uses, doses, schedules, and directions. Follow the instructions for your exact product, and do not switch forms without guidance from your prescriber or pharmacist.

Need a version that does not list lactose, a gluten source, a dye or gelatin? Inactive ingredients differ by manufacturer: see Terazosin inactive ingredients by manufacturer.

Capsule

By mouth
How this form is used
What it may be used for
  • Terazosin capsules are used to treat symptomatic BPH.
  • Terazosin capsules are also used to treat high blood pressure, alone or with other blood pressure medicines.
Important instructions
  • Terazosin capsules start at bedtime, with the dose raised gradually.
  • For high blood pressure, the dosing interval (12 or 24 hours) is adjusted to your blood pressure response.
  • If terazosin capsules are stopped for several days, therapy should be restarted with the initial regimen.
Available strengths 4 strengths
136 FDA-listed product records ⓘ

Oral solution

By mouth
Brands Tezruly
How this form is used
What it may be used for
  • Tezruly is used for symptoms of BPH in adult men.
  • Tezruly is used to lower blood pressure in adults with high blood pressure, alone or with other blood pressure medicines.
Important instructions
  • Tezruly is started once daily at bedtime and raised step by step.
  • Tezruly showed no clinically significant differences in absorption after a high-fat meal.
  • If Tezruly is stopped for more than a few days, restart using the initial regimen.
Available strengths 1 strength
1 FDA-listed product record ⓘ

Terazosin on the U.S. market: products, makers and brands

How Terazosin appears in the FDA’s National Drug Code Directory — including its dosage forms, strengths, brand names, manufacturers, and FDA-listed product records. These are directory records, not sales or prescription volume.

20 companies list 88 Terazosin product records with the FDA, mostly as capsule, oral solution; the earliest marketing or approval year on record is 1987. Brand names on the directory include Hytrin, Tezruly; the rest are generics.

2
Dose forms ⓘ
20
Labelers (makers, repackagers, distributors)
3
Brand names
88
FDA-listed product records ⓘ
1987
Earliest FDA record ⓘ

FDA-listed product records by dose form (tablet variants merged) — FDA National Drug Code Directory. Record counts are not sales or prescription volume.

Also listed with the FDA, not a patient dose form: Powder (7) — bulk drug substance sold to compounders/manufacturers and multi-item kits. These aren’t counted in the dose-form total above.

Aphena Pharma Solutions - Tennessee, LLC14%
Bryant Ranch Prepack13%
Amerisyn LLC9%
A-S Medication Solutions6%
Preferred Pharmaceuticals, Inc6%
Remedyrepack Inc.6%
Other makers48%

Share of FDA-listed product records by manufacturer — FDA National Drug Code Directory. Record counts are not sales or prescription volume.

How widely Terazosin is used (Medicaid data)

A general measure of how commonly Terazosin is prescribed, based on Medicaid — one of the largest public drug programs. The figure below is prescriptions filled in Q1–Q4 2025, summed across every form and brand of the drug.

Think of this as a proxy for how widely Terazosin is used, drawn from freely available public data. Medicaid is just one program — these numbers don’t include Medicare, other government coverage, or commercial and cash-pay prescriptions, so real-world use is higher than what’s shown here.

62,766
Medicaid prescriptions filled (Q1–Q4 2025)
$980,769 gross Medicaid reimbursement (before mandatory rebates — net cost is lower)

How commonly is Terazosin prescribed? Of the 1,601 medications we measure, Terazosin ranks #588 by Medicaid prescriptions — more than 63% of them.

Where Terazosin ranks among the drugs we measure · Q1–Q4 2025 · neighbors ±5

Utilization by Terazosin product

Pick a product to see its own Medicaid numbers. Each chip is one clinical product — a specific strength & dosage form as defined by RxNorm — with brand-name and generic versions combined.

The 2 mg oral capsule is the most-dispensed Terazosin product — about 35% of these Medicaid prescriptions.

terazosin 2 MG Oral Capsule Most dispensed

21,870 Medicaid prescriptions (Q1–Q4 2025) 35% of Terazosin prescriptions shown $349,587 gross reimbursement (before rebates) ≈ $16 per prescription (gross)

Summed across the 5 of 85 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 313217

terazosin 5 MG Oral Capsule

17,728 Medicaid prescriptions (Q1–Q4 2025) 28% of Terazosin prescriptions shown $272,298 gross reimbursement (before rebates) ≈ $15 per prescription (gross)

Summed across the 5 of 73 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 313219

terazosin 1 MG Oral Capsule

14,432 Medicaid prescriptions (Q1–Q4 2025) 23% of Terazosin prescriptions shown $208,673 gross reimbursement (before rebates) ≈ $14 per prescription (gross)

Summed across the 5 of 61 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 313215

terazosin 10 MG Oral Capsule

8,736 Medicaid prescriptions (Q1–Q4 2025) 14% of Terazosin prescriptions shown $150,212 gross reimbursement (before rebates) ≈ $17 per prescription (gross)

Summed across the 4 of 61 listed NDC products with Medicaid activity — every brand and generic of this exact strength & form. RxNorm 260376

Shares are of the Medicaid prescriptions shown here. Product grouping follows RxNorm (the National Library of Medicine’s drug terminology), so “one product” means one strength & dosage form regardless of manufacturer. Dollar figures are gross Medicaid reimbursement before mandatory rebates — rebates (often large, especially for brand-name drugs) are confidential, so actual net cost to Medicaid is lower than shown.

Source: Medicaid State Drug Utilization Data (CMS), aggregated by generic ingredient — summed across every NDC (all brands, strengths, salt forms and dosage forms) of Terazosin, and across all states and both fee-for-service and managed-care claims. A general popularity signal; it excludes Medicare, commercial insurance and cash prescriptions, so it is not total U.S. use. Based on the 19 of 280 listed Terazosin NDCs with Medicaid activity.

Compare Terazosin products

A representative set of FDA-listed product records for Terazosin — across manufacturers, strengths, and dosage forms, grouped by form with each product’s manufacturer and how the FDA approved it. The same medicine may be made and packaged by different companies, so a single drug can have many directory entries. (It’s also why a refill can look different — a new shape, color, or box — even though it contains the same medication.)

Showing 88 of 88 products — FDA National Drug Code Directory. See every product, package size and price: browse all 88 Terazosin NDCs →

Terazosin recall history

A recall is when a specific batch of a medicine is pulled from the market — usually a manufacturing issue, not a problem with the drug itself. Class I is most serious, Class III least.

The FDA’s enforcement reports list no Terazosin recalls since July 2021.

✅No Terazosin recalls on record since July 2021

Source: FDA enforcement (recall) reports, via openFDA; our copy was last updated Sep 24, 2026.

RxNorm Concept Web — From Ingredient to Every Form and Strength

This page starts with one ingredient concept (IN). The branches below show its dose-form concepts (SCDF), then the available clinical drug and strength concepts (SCD). Combination products remain separate concepts with their own pages.

Ingredient (IN) Terazosin RxCUI 37798 3 dose forms · 9 strengths
  1. Dose form (SCDF) Oral Capsule RxCUI 374033 In current FDA listings
    Clinical drug / strength (SCD) 1 MG RxCUI 313215 2 MG RxCUI 313217 5 MG RxCUI 313219 10 MG RxCUI 260376
  2. Dose form (SCDF) Oral Solution RxCUI 2689132 In current FDA listings
    Clinical drug / strength (SCD) 1 MG/ML RxCUI 2689133
  3. Dose form (SCDF) Oral Tablet RxCUI 374034 No current FDA listing
    Clinical drug / strength (SCD) 1 MG RxCUI 313216 2 MG RxCUI 313218 5 MG RxCUI 313220 10 MG RxCUI 313214

Look up RxCUI 37798 in the RxCUI Atlas →

RxNorm is the U.S. National Library of Medicine’s normalized drug vocabulary. Its concept hierarchy can include forms that are not currently marketed; the status on each branch compares that concept with current FDA listings. RxCUIs identify vocabulary concepts, not individual packages or manufacturers.

💵 What Terazosin costs pharmacies (NADAC benchmark)

The national average invoice price pharmacies pay for the drug itself, from CMS's NADAC survey (data as of Sep 30, 2026). This is a supply-cost benchmark — not a retail price and not what you'd pay at the counter.

FormStrengthPharmacy acquisition benchmark
Capsule · Oral 2 mg $0.106 per capsule NDC details & price history
Capsule · Oral 5 mg $0.108 per capsule NDC details & price history
Capsule · Oral 10 mg $0.130 per capsule NDC details & price history
Capsule · Oral 1 mg $0.108 per capsule NDC details & price history
Why show this? Your out-of-pocket cost depends on insurance, pharmacy markup, and discounts — but the acquisition benchmark tells you whether the medication itself is inexpensive or costly, which strengths cost more per dose, and whether a cash-price quote is in a reasonable range. Each row links to the NDC-level record with its full price history.

Source: CMS National Average Drug Acquisition Cost (NADAC), a survey of retail pharmacy invoice prices. Benchmarks shown are the range across package sizes of a representative product for each form and strength — other manufacturers' products may differ.

Terazosin brand names

Terazosin is sold under 2 brand names in the FDA directory — Hytrin, Tezruly. A brand and its generic contain the same active ingredient; the brand name belongs to one company's product.

Hytrin Tezruly

Who makes Terazosin: manufacturers and labelers

20 companies list Terazosin products with the FDA. By number of product records, the largest are Aphena Pharma Solutions - Tennessee, LLC, Bryant Ranch Prepack, Amerisyn LLC. Labelers include manufacturers and repackagers; the product in your bottle depends on which one your pharmacy stocks.

Aphena Pharma Solutions - Tennessee, LLC 12 Bryant Ranch Prepack 11 Amerisyn LLC 8 A-S Medication Solutions 5 Preferred Pharmaceuticals, Inc 5 Remedyrepack Inc. 5 Ajanta Pharma USA Inc. 4 Amici Pharma, Inc. 4 Apnar Pharma LP 4 AvKARE 4 AvPAK 4 Bionpharma Inc. 4 Chartwell RX, LLC 4 Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. 4 Jubilant Cadista Pharmaceuticals Inc. 4 Proficient Rx LP 2 ANI Pharmaceuticals, Inc. 1 Coupler LLC 1 Northwind Health Company, LLC 1 NuCare Pharmaceuticals, Inc. 1

Terazosin drug class (RxNorm)

Terazosin belongs to the alpha-Adrenergic Blocker class.

Pharmacologic class alpha-Adrenergic Blocker
Drug family (ATC) Alpha-adrenoreceptor antagonists
How it works Adrenergic alpha-Antagonists

Classified by RxNorm RxClass — the U.S. National Library of Medicine's standardized drug-classification service (Established Pharmacologic Class from the FDA, the ATC drug family from the WHO, and mechanism of action). Reference only, not medical advice.

Sources for this Terazosin page

Core label, product, RxNorm, safety, and utilization data on this page come from the sources identified below. AI-written, editorial, and licensed sections are labeled separately.

📄
FDA-filed drug labels (SPL) Uses, dosing, warnings & side effects from SPL records retrieved through openFDA; the linked representative set can be verified on DailyMed. ✓ Linked label effective Apr 18, 2025
🏭
Forms, brands & labelersAggregated from ingredient-matched FDA National Drug Code Directory product records for Terazosin.
📈
Real-world reportsThe FDA Adverse Event Reporting System (FAERS), served through openFDA.
🚨
Recalls & shortagesopenFDA drug-enforcement reports and the FDA drug-shortage database.
🧾 Clinical label set — FDA-filed SPL labels retained for Terazosin after exact ingredient or ingredient-combination matching and applicable route/form matching
Clinical labels in scope
52
Finished products in the current FDA directory
88
Companies listing them (makers, repackagers, distributors)
20
FDA labeler codes behind them ⓘ
23
Linked representative label ⓘ
ANI Pharmaceuticals, Inc.
Linked label effective
Apr 18, 2025
Composite sections available
23
Linked SPL Set ID
69582e0c-6569-490c-8c14-999f3750336f
Linked SPL Document ID
0d2b0b80-5201-473a-9b43-f5c2127f6f7c
Open the linked representative label on DailyMed ↗
NDC package records associated with this linked SPL 1

How this page is built

HelloPharmacist combines public FDA and NLM records and does not author the underlying clinical facts. The plain-language sections are written with AI from the FDA-approved label text and reviewed by our pharmacy team before publication. ANI Pharmaceuticals, Inc. is the representative DailyMed label linked for verification and dates. This is general education, not medical advice: always talk to your doctor or pharmacist about your own medicines. How we build and review drug pages →