HomeNDC LookupIngredientsLosartan Potassium › 71335-1136-02
LOSARTAN POTASSIUM 25 mg Tablet, Film Coated, 30-count — NDC 71335-1136-02 package photo

LOSARTAN POTASSIUM 25 mg Tablet, Film Coated, 30-count

by Bryant Ranch Prepack · 30 TABLET, FILM COATED in 1 BOTTLE (71335-1136-2)
NDC 71335-1136-02
🏷️ FDA NDC (as labeled) 71335-1136-2 billing pads the package segment with a zero
This package
Contains30-count Pack sizes6 compare ↓
Also priced by: Part D plans $0.1027/unit — full pricing hub ↓
Rx only Generic On market Non-controlled
🗂️ Data synced Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

🆔 Identity & classification

FDA NDC (as labeled) 71335-1136-2
Product NDC 71335-1136
11-digit billing NDC 71335113602
RxCUI 979485
UNII 3ST302B24A
Application # ANDA091541
SPL Set ID eace2965-c02b-49ec-aad8-3a69a6ae9cbf
Established class (EPC) Angiotensin 2 Receptor Blocker
Mechanism of action Angiotensin 2 Receptor Antagonists
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2012-12-06
Route ORAL
Dosage form TABLET, FILM COATED
Substance LOSARTAN POTASSIUM
TE code (Orange Book) AB · RLD · RS
Why two NDCs? The FDA registers this code as 71335-1136-2 — a 5-4-1 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 package segment → 71335-1136-02. 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 Angiotensin 2 Receptor Blocker class.

Pharmacologic class Angiotensin 2 Receptor Blocker
Drug family (ATC) Angiotensin II receptor blockers (ARBs), plain
How it works Angiotensin 2 Receptor 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.

🏭 Manufacturer & labeler

LabelerBryant Ranch Prepack
Application holderMICRO LABS LTD
FDA applicationANDA091541 (ANDA)
Labeler code71335
First marketedDec 2012
Product typeHuman Prescription Drug
Portfolio4,433 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.

🩺 Clinical

📖 What it is MedlinePlus · NLM

Losartan is used alone or in combination with other medications to treat high blood pressure. Losartan is also used to decrease the risk of stroke in people who have high blood pressure and a heart condition called left ventricular hypertrophy (enlargement of the walls of the left side of the heart). Losartan may not decrease the risk of stroke in African Americans who have these conditions. This medication is also used to treat kidney disease in people who have type 2 diabetes (condition in which the body does not use insulin normally and therefore cannot control the amount of sugar in the bl...

Read the full MedlinePlus article ↗
📗 Our plain-language guide HelloPharmacist
  • Losartan is mainly used to lower high blood pressure, which protects you from strokes and heart attacks over time. Depending on your situation, your doctor may also have prescribed...
  • What exactly is losartan supposed to do for me?
  • You can take losartan at any time of day that works for you, as long as you're consistent. Taking it with or without food is both fine — eating may slow things down a tiny bit, but...
  • Does it matter what time of day I take it, and can I take it with food?
📖 Read our full Losartan guide →
1
Nutrient depletion considerations

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

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.

💊 What it looks like

Color white
ShapeOval
ImprintA;25
Size8 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 RFW2ET671P
    Hydroxypropyl cellulose is a plant-derived thickening agent made from cellulose. It acts as a binder to hold tablet ingredients together and as a film-former to coat tablets or control how fast the medicine releases.
  • UNII 3NXW29V3WO
    Hypromellose is a plant-based thickener made from cellulose. It's used in medicines as a binder to hold ingredients together, a coating for tablets, and a thickener for liquids.
  • 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 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 O8232NY3SJ
    A plant-based carbohydrate derived from corn kernels. It acts as a filler to add bulk, a binder to hold ingredients together, and a disintegrant to help the tablet break apart in your stomach for absorption.
  • 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.

7 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 DailyMedingredient 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.

💲 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 $0.1027 $3.08 / 30 tablets
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.

🔁 Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
LOSARTAN POTASSIUM 25 mg 64380-0933-04 Strides 30 tablets $0.021 AB Availability likely
Losartan Potassium 25 mg 00904-7047-61 Major 1 tablet $0.022 AB Availability likely
Losartan Potassium 25 mg 11788-0100-10 AiPing 1000 tablets $0.022 AB Availability likely
Losartan Potassium 25 mg 31722-0700-05 Camber 500 tablets $0.022 AB Availability likely
Losartan Potassium 25 mg 43547-0360-09 Solco 90 tablets $0.022 AB Availability likely
Losortan Potassium 25 mg 50268-0504-15 AvPAK 1 tablet $0.022 AB Availability likely
Losartan Potassium 25 mg 62332-0027-30 Alembic 30 tablets $0.022 AB Availability likely
Losartan Potassium 25 mg 68084-0346-01 American 1 tablet $0.022 AB Availability likely
Losartan Potassium 25 mg 70010-0741-03 Granules 30 tablets $0.022 AB Availability likely
Losartan potassium 25 mg 72205-0141-90 Novadoz 90 tablets $0.022 AB Availability likely
Losartan Potassium 25 mg 72603-0340-01 NorthStar 90 tablets $0.022 AB Availability likely
Losartan Potassium 25 mg 82009-0042-10 Quallent 1000 tablets $0.022 AB Availability likely
Losartan potassium 25 mg 33342-0044-07 Macleods 30 tablets $0.031 AB FDA listed
Losartan Potassium 25 mg 42571-0110-10 Micro 1000 tablets $0.031 AB Discontinued
Cozaar 25 mg 78206-0121-01 Organon 90 tablets $3.350 AB Availability likely
Losartan Potassium 25 mg 00615-7958-05 NCS 15 tablets AB FDA listed
Losartan Potassium 25 mg 29300-0144-01 Unichem 100 tablets AB FDA listed
Losartan Potassium 25 mg 42708-0125-30 QPharma, 30 tablets AB FDA listed
Losartan Potassium 25 mg 42708-0151-30 QPharma, 30 tablets AB FDA listed
Losartan Potassium 25 mg 46708-0445-30 Alembic 30 tablets AB FDA listed
Losartan Potassium 25 mg 50090-2622-00 A-S 30 tablets AB FDA listed
Losartan Potassium 25 mg 50090-4645-00 A-S 30 tablets AB FDA listed
Losartan Potassium 25 mg 50090-5626-00 A-S 30 tablets AB FDA listed
Losartan Potassium 25 mg 50090-6714-00 A-S 90 tablets AB FDA listed
Losartan Potassium 25 mg 50090-7794-00 A-S 30 tablets AB FDA listed
Losartan Potassium 25 mg 50090-7795-00 A-S 90 tablets AB FDA listed
Losartan Potassium 25 mg 50090-7888-00 A-S 90 tablets AB FDA listed
Losartan Potassium 25 mg 51655-0918-26 Northwind 90 tablets AB FDA listed
Losartan Potassium 25 mg 55154-2326-00 Cardinal 1 tablet AB FDA listed
Losartan Potassium 25 mg 55154-4783-00 Cardinal 1 tablet AB FDA listed
Losartan potassium Tablets, 25 mg 59746-0333-01 Jubilant 100 tablets AB FDA listed
Losartan Potassium 25 mg 62207-0741-49 Granules 1000 tablets AB FDA listed
Losartan Potassium 25 mg 63187-0357-30 Proficient 30 tablets AB FDA listed
Losartan potassium Tablets, 25 mg 63629-2426-01 Bryant 1000 tablets AB FDA listed
Losartan Potassium 25 mg 65841-0729-01 Zydus 100 tablets AB FDA listed
Losartan Potassium 25 mg 65862-0201-05 Aurobindo 500 tablets FDA listed
Losartan Potassium 25 mg 67046-1088-03 Coupler 30 tablets AB FDA listed
Losartan potassium 25 mg 67046-1470-03 Coupler 30 tablets AB FDA listed
Losartan Potassium 25 mg 68071-5041-09 NuCare 90 tablets AB FDA listed
Losartan Potassium 25 mg 68071-5114-03 NuCare 30 tablets AB FDA listed
Losartan Potassium 25 mg 68071-5147-09 NuCare 90 tablets AB FDA listed
Losartan Potassium 25 mg 68180-0376-01 Lupin 100 tablets AB FDA listed
Losartan Potassium 25 mg 68382-0135-01 Zydus 100 tablets AB FDA listed
Losartan Potassium 25 mg 68788-4007-01 Preferred 100 tablets AB FDA listed
Losartan potassium 25 mg 68788-4091-03 Preferred 30 tablets AB FDA listed
Losortan Potassium 25 mg 68788-8639-01 Preferred 100 tablets AB FDA listed
Losartan Potassium 25 mg 70518-2132-00 REMEDYREPACK 30 tablets AB FDA listed
Losartan Potassium 25 mg 70518-3489-00 REMEDYREPACK 30 tablets AB FDA listed
Losartan Potassium 25 mg 70518-3894-00 REMEDYREPACK 90 tablets AB FDA listed
Losartan Potassium 25 mg 71205-0226-30 Proficient 30 tablets AB FDA listed
LOSARTAN POTASSIUM 25 mg 71205-0675-30 Proficient 30 tablets AB FDA listed
Losartan Potassium 25 mgthis 71335-1136-02 Bryant 30 tablets AB FDA listed
Losartan Potassium 25 mg 71335-1174-01 Bryant 90 tablets AB FDA listed
Losartan Potassium 25 mg 71335-1582-01 Bryant 90 tablets AB FDA listed
Losortan Potassium 25 mg 71335-1644-01 Bryant 90 tablets AB FDA listed
Losartan Potassium 25 mg 71610-0155-30 Aphena 30 tablets AB FDA listed
Losartan Potassium 25 mg 71610-0224-30 Aphena 30 tablets AB FDA listed
Losartan Potassium 25 mg 71610-0439-15 Aphena 15 tablets AB FDA listed
Losartan potassium Tablets, 25 mg 72162-1696-00 Bryant 1000 tablets AB FDA listed
Losartan Potassium 25 mg 72162-2506-00 Bryant 1000 tablets AB FDA listed
Losartan Potassium 25 mg 72189-0082-30 DIRECT 30 tablets AB FDA listed
Losartan Potassium 25 mg 72189-0100-90 DIRECT 90 tablets AB FDA listed
Losartan Potassium 25 mg 72189-0303-90 DirectRx 90 tablets AB FDA listed
Losartan Potassium 25 mg 72789-0029-14 PD-Rx 14 tablets AB FDA listed
LOSARTAN POTASSIUM 25 mg 72789-0163-90 PD-Rx 90 tablets AB FDA listed
LOSARTAN POTASSIUM 25 mg 72789-0282-30 PD-Rx 30 tablets AB FDA listed
Losartan Potassium 25 mg 72865-0141-10 XLCare 1000 tablets AB FDA listed
Losartan Potassium 25 mg 87441-0052-01 Unit 30 tablets 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

🏛️
2012
On the market since
Dec 2012
📍
2026
Currently FDA-listed
14 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.

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

Medicare Part D (outpatient prescription) spending for Losartan Potassium — the program that covers self-administered drugs. 20 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 Losartan Potassium. 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
$87.55M
Claims incl. refills
9.7M
Beneficiaries
7.6M
Spend / beneficiary
$11.46
Spend / claim
$8.99
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.

🔬 Reported adverse events (FAERS)

Read carefully: FAERS reports are voluntary and unverified. Counts are not incidence, do not establish causation, are subject to reporting bias, and cannot be used to compare one drug to another. Shown for signal context only. Reports for Losartan Potassium — the ingredient across all brands.

Top reported reactions

Fatigue6,464
Nausea5,301
Diarrhoea5,184
Dyspnoea4,689
Dizziness4,429
Headache4,285
Pain3,907

Age at onset

Neonate11
Infant5
Child7
Adolescent11
Adult6,203
Elderly8,653

Reporter sex

89,498 reports
Male · 39%
Female · 61%
Unknown · 0%

Serious outcomes

Hospitalization27,390
Life-threatening2,808
Reports over time (by year) — tap or hover for the count & year
2021 2022 2024 2026 5,928 3,120
Most recent year is provisional (FAERS lags ~3 months).
Where does this data come from?
Adverse-event reports from the FDA Adverse Event Reporting System (FAERS) via openFDA. FAERS reports are voluntary and unverified — counts are not incidence and don’t establish causation.

📦 Packaging — all sizes for this product

Package NDCDescription Marketing startStatus
71335-1136-01 90 TABLET, FILM COATED in 1 BOTTLE (71335-1136-1) 2022-02-14 Active
71335-1136-02 You're viewing this 30 TABLET, FILM COATED in 1 BOTTLE (71335-1136-2) 2019-03-21 Active
71335-1136-03 60 TABLET, FILM COATED in 1 BOTTLE (71335-1136-3) 2019-03-04 Active
71335-1136-04 100 TABLET, FILM COATED in 1 BOTTLE (71335-1136-4) 2022-02-14 Active
71335-1136-05 10 TABLET, FILM COATED in 1 BOTTLE (71335-1136-5) 2022-02-14 Active
71335-1136-06 7 TABLET, FILM COATED in 1 BOTTLE (71335-1136-6) 2022-02-14 Active

You're viewing one of 6 pack sizes for this product.

Pack size FAQ

What quantity is in NDC 71335-1136-02?
NDC 71335-1136-02 is a 30-count package — 30 tablet, film coated in 1 bottle.
What is the difference between NDC 71335-1136-02 and NDC 71335-1136-06?
Both are LOSARTAN POTASSIUM 25 mg Tablet, Film Coated — the drug itself is identical. NDC 71335-1136-02 is the 30-count package, while NDC 71335-1136-06 is the 7 tablets package.
What NDC number is used to bill for this package of LOSARTAN POTASSIUM 25 mg Tablet, Film Coated?
Bill NDC 71335-1136-02 — the 11-digit billing format is 71335113602. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.

🧭 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 ✓ Available
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 FDA registers it as 71335-1136-2, which is what is printed on the packaging and shown on DailyMed. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero: 71335-1136-02, written without dashes as 71335113602. The Identity section at the top of this page lists every form of this code.
What do the three segments of this NDC mean?
In 71335-1136-02, the first segment (71335) is the labeler code FDA assigned to Bryant Ranch Prepack; the middle segment (1136) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (02) identifies this exact package size and type. Together they name one specific package of one specific product.
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 Bryant Ranch Prepack. Listing status can change — the directory data on this page refreshes weekly.
Does this product come in other package sizes?
Yes — the FDA directory lists 5 other package presentations of this same product, including 7 tablets (71335-1136-06), 10 tablets (71335-1136-05), 60 tablets (71335-1136-03). Each has its own NDC and its own page — see the package list near the top of this page.
Who lists this product with the FDA?
Bryant Ranch Prepack 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.

📄 Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🚨 Boxed Warning 80 words

WARNING: FETAL TOXICITY When pregnancy is detected, discontinue losartan potassium as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus [see Warnings and Precautions ( 5.1 )]. WARNING: FETAL TOXICITY See full prescribing information for complete boxed warning.

When pregnancy is detected, discontinue losartan potassium as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus. ( 5.1 )

🎯 Indications and Usage ~3 min read

1 INDICATIONS AND USAGE Losartan potassium tablet is an angiotensin II receptor blocker (ARB) indicated for: Treatment of hypertension, to lower blood pressure in adults and children greater than 6 years old. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions. ( 1.1 ) Reduction of the risk of stroke in patients with hypertension and left ventricular hypertrophy.

There is evidence that this benefit does not apply to Black patients. ( 1.2 ) Treatment of diabetic nephropathy with an elevated serum creatinine and proteinuria in patients with type 2 diabetes and a history of hypertension. ( 1.3 )

1.1Hypertension Losartan potassium tablets are indicated for the treatment of hypertension in adults and pediatric patients 6 years of age and older, to lower blood pressure. Lowering blood pressure lowers the risk of fatal and nonfatal cardiovascular (CV) events, primarily strokes and myocardial infarction. These benefits have been seen in controlled trials of antihypertensive drugs from a wide variety of pharmacologic classes including losartan.

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 1 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. Losartan potassium tablets may be administered with other antihypertensive agents.

1.2Hypertensive Patients with Left Ventricular Hypertrophy Losartan potassium tablets are indicated to reduce the risk of stroke in patients with hypertension and left ventricular hypertrophy, but there is evidence that this benefit does not apply to Black patients [see Use in Specific Populations ( 8.6 ) and Clinical Pharmacology ( 12.3 )].

1.3Nephropathy in Type 2 Diabetic Patients Losartan potassium tablets are indicated for the treatment of diabetic nephropathy with an elevated serum creatinine and proteinuria (urinary albumin to creatinine ratio ≥300 mg/g) in patients with type 2 diabetes and a history of hypertension. In this population, losartan potassium tablets reduces the rate of progression of…

⏱️ Dosage and Administration ~3 min read

2 DOSAGE AND ADMINISTRATION Hypertension Usual adult dose: 50 mg once daily. ( 2.1 ) Usual pediatric starting dose: 0.7 mg per kg once daily (up to 50 mg). ( 2.1 ) Hypertensive Patients with Left Ventricular Hypertrophy Usual starting dose: 50 mg once daily.

( 2.2 ) Add hydrochlorothiazide 12.5 mg and/or increase losartan potassium to 100 mg followed by an increase to hydrochlorothiazide 25 mg if further blood pressure response is needed. ( 2.2 , 14.2 ) Nephropathy in Type 2 Diabetic Patients Usual dose: 50 mg once daily. ( 2.3 ) Increase dose to 100 mg once daily if further blood pressure response is needed.

( 2.3 )

2.1Hypertension Adult Hypertension The usual starting dose of losartan potassium tablet is 50 mg once daily. The dosage can be increased to a maximum dose of 100 mg once daily as needed to control blood pressure [see Clinical Studies ( 14.1 )]. A starting dose of 25 mg is recommended for patients with possible intravascular depletion (e.g., on diuretic therapy).

Pediatric Hypertension The usual recommended starting dose is 0.7 mg per kg once daily (up to 50 mg total) administered as a tablet or a suspension [see Dosage and Administration ( 2.5 )]. Dosage should be adjusted according to blood pressure response. Doses above 1.4 mg per kg (or in excess of 100 mg) daily have not been studied in pediatric patients [see Clinical Pharmacology ( 12.3 ), Clinical Studies ( 14.1 ), and Warnings and Precautions ( 5.2 )].

Losartan potassium tablets is not recommended in pediatric patients less than 6 years of age or in pediatric patients with estimated glomerular filtration rate less than 30 mL/min/1.73 m 2 [see Use in Specific Populations ( 8.4 ), Clinical Pharmacology ( 12.3 ), and Clinical Studies ( 14 )].

2.2Hypertensive Patients with Left Ventricular Hypertrophy The usual starting dose is 50 mg of losartan potassium tablets once daily. Hydrochlorothiazide 12.5 mg daily should be added and/or the dose of Losartan potassium tablets should be increased to 100 mg once daily followed by an increase in hydrochlorothiazide to 25 mg once daily based on blood pressure response [see Clinical Studies ( 14.2 )].

2.3Nephropathy in Type 2 Diabetic Patients The usual starting dose is 50 mg once daily. The dose should be increased to 100 mg once daily based on blood pressure response [see Clinical Studies ( 14.3 )].

2.4Dosage Modifications in Patients with Hepatic Impairment In patients with mild-to-moderate hepatic impairment the recommended starting dose of losartan potassium tablet is 25 mg once daily. Losartan potassium tablets has not been studied in patients with severe hepatic impairment [see Use in Specific Populations (8.8) and Clinical Pharmacology (12.3) ].

2.5Preparation of Suspension (for 200 mL of a 2.5 mg/mL suspension) Add 10 mL of Purified Water USP to an 8 ounce (240 mL) amber polyethylene terephthalate (PET) bottle containing ten 50 mg losartan potassium tablets. Immediately shake for at least 2 minutes. Let the concentrate stand for 1 hour and then shake for 1 minute to disperse the tablet contents.

Separately prepare a 50/50 volumetric mixture of Ora-Plus TM and Ora-Sweet SF TM . Add 190 mL of the 50/50 Ora-Plus TM /Ora- Sweet SF TM mixture to the tablet and water slurry in the PET bottle and shake for 1 minute to disperse the ingredients. The suspension should be refrigerated at 2 to 8°C (36 to 46°F) and can be stored for up to 4 weeks.

Shake the suspension prior to each use and return promptly to the refrigerator.

💊 Dosage Forms and Strengths 94 words

3 DOSAGE FORMS AND STRENGTHS Losartan potassium tablets USP 25 mg are white to off-white, oval shaped, film-coated tablets with “A” engraved on one side and “25” on the other side. Losartan potassium tablets USP 50 mg are white to off-white, oval shaped, film-coated tablets with “A50” engraved on one side and breakline on the other side. Losartan potassium tablets USP 100 mg are white to off-white, oval shaped, film-coated tablets with “A100” engraved on one side and plain on the other side.

Tablets: 25 mg; 50 mg; and 100 mg. ( 3 )

Contraindications 42 words

4 CONTRAINDICATIONS Losartan potassium is contraindicated: In patients who are hypersensitive to any component of this product. For coadministration with aliskiren in patients with diabetes. Hypersensitivity to any component. ( 4 ) Coadministration with aliskiren in patients with diabetes. ( 4 )

⚠️ Warnings and Cautions ~1 min read

5 WARNINGS AND PRECAUTIONS Hypotension: Correct volume or salt depletion prior to administration of losartan potassium. ( 5.2 ) Monitor renal function and potassium in susceptible patients. ( 5.3 , 5.4 )

5.1Fetal Toxicity Losartan potassium can cause fetal harm when administered to a pregnant woman. Use of drugs that act on the renin-angiotensin system during the second and third trimesters of pregnancy reduces fetal renal function and increases fetal and neonatal morbidity and death. Resulting oligohydramnios can be associated with fetal lung hypoplasia and skeletal deformations.

Potential neonatal adverse effects include skull hypoplasia, anuria, hypotension, renal failure, and death. When pregnancy is detected, discontinue losartan potassium as soon as possible [see Use in Specific Populations (8.1) ].

5.2Hypotension in Volume- or Salt-Depleted Patients In patients with an activated renin-angiotensin system, such as volume- or salt-depleted patients (e.g., those being treated with high doses of diuretics), symptomatic hypotension may occur after initiation of treatment with losartan potassium. Correct volume or salt depletion prior to administration of losartan potassium [see Dosage and Administration ( 2.1 )].

5.3Renal Function Deterioration Changes in renal function including acute renal failure can be caused by drugs that inhibit the renin­-angiotensin system and by diuretics. Patients whose renal function may depend in part on the activity of the renin-angiotensin system (e.g., patients with renal artery stenosis, chronic kidney disease, severe congestive heart failure, or volume depletion) may be at particular risk of developing acute renal failure on losartan potassium. Monitor renal function periodically in these patients.

Consider withholding or discontinuing therapy in patients who develop a clinically significant decrease in renal function on losartan potassium [see Drug Interactions ( 7.3 ) and Use in Specific Populations ( 8.7 )].

5.4Hyperkalemia Monitor serum potassium periodically and treat appropriately. Dosage reduction or discontinuation of losartan potassium may be required [see Adverse Reactions ( 6.1 )]. Concomitant use of other drugs that may increase serum potassium may lead to hyperkalemia [see Drug Interactions (7.1)].

🤒 Adverse Reactions ~3 min read

6 ADVERSE REACTIONS Most common adverse reactions (incidence ≥2% and greater than placebo) are: dizziness, upper respiratory infection, nasal congestion, and back pain. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Micro Labs USA, Inc. at 1-855-839-8195 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .

6.1Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. Hypertension Losartan potassium has been evaluated for safety in more than 3300 adult patients treated for essential hypertension and 4058 patients/subjects overall. Over 1200 patients were treated for over 6 months and more than 800 for over one year.

Treatment with losartan potassium was well-tolerated with an overall incidence of adverse events similar to that of placebo. In controlled clinical trials, discontinuation of therapy for adverse events occurred in 2.3% of patients treated with losartan potassium and 3.7% of patients given placebo. In 4 clinical trials involving over 1000 patients on various doses (10 to 150 mg) of losartan potassium and over 300 patients given placebo, the adverse events that occurred in ≥2% of patients treated with losartan potassium and more commonly than placebo were: dizziness (3% vs.

2%), upper respiratory infection (8% vs. 7%), nasal congestion (2% vs. 1%), and back pain (2% vs.

1%). The following less common adverse reactions have been reported: Blood and lymphatic system disorders: Anemia. Psychiatric disorders: Depression.

Nervous system disorders: Somnolence, headache, sleep disorders, paresthesia, migraine. Ear and labyrinth disorders: Vertigo, tinnitus. Cardiac disorders: Palpitations, syncope, atrial fibrillation, CVA.

Respiratory, thoracic and mediastinal disorders: Dyspnea. Gastrointestinal disorders: Abdominal pain, constipation, nausea, vomiting. Skin and subcutaneous tissue disorders: Urticaria, pruritus, rash, photosensitivity.

Musculoskeletal and connective tissue disorders: Myalgia, arthralgia. Reproductive system and breast disorders: Impotence. General disorders and administration site conditions: Edema.

Cough Persistent dry cough (with an incidence of a few percent) has been associated with ACE-inhibitor use and in practice can be a cause of discontinuation of ACE-inhibitor therapy. Two prospective, parallel-group, double-blind, randomized, controlled trials were conducted to assess the effects of losartan on the incidence of cough in hypertensive patients who had experienced cough while receiving ACE-inhibitor therapy. Patients who had typical ACE-inhibitor cough when challenged with lisinopril, whose cough disappeared on placebo, were randomized to losartan 50 mg, lisinopril 20 mg, or either placebo (one study, n=97) or 25 mg hydrochlorothiazide (n=135).

The double-blind treatment period lasted up to 8 weeks. The incidence of cough is shown in Table 1 below. Table 1: Study 1 * HCTZ Losartan Lisinopril Cough 25% 17% 69% Study 2 † Placebo Losartan Lisinopril Cough 35% 29% 62% * Demographics = (89% Caucasian, 64% female) † Demographics = (90% Caucasian, 51% female) These studies demonstrate that the incidence of cough associated with losartan therapy, in a population that all had cough associated with ACE-inhibitor therapy, is similar to that associated with hydrochlorothiazide or placebo therapy.

Cases of cough, including positive re-challenges, have been reported with the use of losartan in postmarketing experience. Hypertensive Patients with Left Ventricular Hypertrophy In the Losartan Intervention for Endpoint (LIFE) study, adverse reactions with losartan potassium were similar to those reported previously for patients with hypertension. Nephropathy in Type 2 Diabetic Patients In the Reduction of Endpoints in NIDDM with the Angiotensin II Receptor Antagonist Losartan (REN…

🔄 Drug Interactions ~2 min read

7 DRUG INTERACTIONS Agents Increasing Serum Potassium: Risk of hyperkalemia. ( 7.1 ) Lithium: Risk of lithium toxicity. ( 7.2 ) NSAIDs: Increased risk of renal impairment and reduced diuretic, natriuretic, and antihypertensive effects. ( 7.3 ) Dual Inhibition of the Renin-Angiotensin System: Increased risk of renal impairment, hypotension, syncope, and hyperkalemia. ( 7.4 )

7.1Agents Increasing Serum Potassium Coadministration of losartan with other drugs that raise serum potassium levels may result in hyperkalemia. Monitor serum potassium in such patients.

7.2Lithium Increases in serum lithium concentrations and lithium toxicity have been reported during concomitant administration of lithium with angiotensin II receptor antagonists. Monitor serum lithium levels during concomitant use.

7.3Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) Including Selective Cyclooxygenase-2 Inhibitors (COX-2 Inhibitors) In patients who are elderly, volume-depleted (including those on diuretic therapy), or with compromised renal function, coadministration of NSAIDs, including selective COX-2 inhibitors, with angiotensin II receptor antagonists (including losartan) may result in deterioration of renal function, including possible acute renal failure. These effects are usually reversible. Monitor renal function periodically in patients receiving losartan and NSAID therapy.

The antihypertensive effect of angiotensin II receptor antagonists, including losartan, may be attenuated by NSAIDs, including selective COX-2 inhibitors.

7.4Dual Blockade of the Renin-Angiotensin System (RAS) Dual blockade of the RAS with angiotensin receptor blockers, ACE inhibitors, or aliskiren is associated with increased risks of hypotension, syncope, hyperkalemia, and changes in renal function (including acute renal failure) compared to monotherapy. The Veterans Affairs Nephropathy in Diabetes (VA NEPHRON-D) trial enrolled 1448 patients with type 2 diabetes, elevated urinary-albumin-to-creatinine ratio, and decreased estimated glomerular filtration rate (GFR 30 to 89.9 mL/min), randomized them to lisinopril or placebo on a background of losartan therapy and followed them for a median of 2.2 years.

Patients receiving the combination of losartan and lisinopril did not obtain any additional benefit compared to monotherapy for the combined endpoint of decline in GFR, end stage renal disease, or death, but experienced an increased incidence of hyperkalemia and acute kidney injury compared with the monotherapy group. In most patients no benefit has been associated with using two RAS inhibitors concomitantly. In general, avoid combined use of RAS inhibitors.

Closely monitor blood pressure, renal function, and electrolytes in patients on losartan potassium and other agents that affect the RAS. Do not coadminister aliskiren with losartan potassium in patients with diabetes. Avoid use of aliskiren with losartan potassium in patients with renal impairment (GFR <60 mL/min).

👥 Use in Specific Populations ~3 min read

8 USE IN SPECIFIC POPULATIONS Losartan potassium is not recommended in pediatric patients less than 6 years of age or in pediatric patients with glomerular filtration rate less than 30 mL/min/1.73 m 2 . ( 2.1 , 8.4 ) Hepatic Impairment: Recommended starting dose 25 mg once daily. ( 2.4 , 8.8 , 12.3 )

8.1Pregnancy Risk Summary Losartan potassium can cause fetal harm when administered to a pregnant woman. Use of drugs that act on the renin-angiotensin system during the second and third trimesters of pregnancy reduces fetal renal function and increases fetal and neonatal morbidity and death. Most epidemiologic studies examining fetal abnormalities after exposure to antihypertensive use in the first trimester have not distinguished drugs affecting the renin-angiotensin system from other antihypertensive agents.

When pregnancy is detected, discontinue losartan potassium as soon as possible ( see Clinical Considerations ). The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes.

In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-associated Maternal and/or Embryo/Fetal Risk Hypertension in pregnancy increases the maternal risk for pre-eclampsia, gestational diabetes, premature delivery, and delivery complications (e.g., need for cesarean section, post-partum hemorrhage). Hypertension increases the fetal risk for intrauterine growth restriction and intrauterine death.

Pregnant women with hypertension should be carefully monitored and managed accordingly. Fetal/Neonatal Adverse Reactions Oligohydramnios in pregnant women who use drugs affecting the renin-angiotensin system in the second and third trimesters of pregnancy can result in the following: reduced fetal renal function leading to anuria and renal failure, fetal lung hypoplasia, skeletal deformations, including skull hypoplasia, hypotension, and death. In the unusual case that there is no appropriate alternative to therapy with drugs affecting the renin-angiotensin system for a particular patient, apprise the mother of the potential risk to the fetus.

In patients taking losartan potassium during pregnancy, perform serial ultrasound examinations to assess the intra-amniotic environment. Fetal testing may be appropriate, based on the week of gestation. If oligohydramnios is observed, discontinue losartan potassium, unless it is considered lifesaving for the mother.

Patients and physicians should be aware, however, that oligohydramnios may not appear until after the fetus has sustained irreversible injury. Closely observe neonates with histories of in utero exposure to losartan potassium for hypotension, oliguria, and hyperkalemia. In neonates with a history of in utero exposure to losartan potassium, if oliguria or hypotension occurs, support blood pressure and renal perfusion.

Exchange transfusions or dialysis may be required as a means of reversing hypotension and replacing renal function. Data Animal Data Losartan potassium was administered orally to rats during the period of late gestation through lactation (Gestation Day 15 through Lactation Day 20) at doses of 10, 25, and 100 mg/kg/day. Losartan potassium has been shown to produce adverse effects in rat fetuses and neonates, including decreased body weight, delayed physical and behavioral development, mortality and renal toxicity.

With the exception of neonatal weight gain (which was affected at doses as low as 10 mg/kg/day), doses associated with these effects exceeded 25 mg/kg/day (approximately three times the maximum recommended human dose of 100 mg on a mg/m 2 basis). These findings are attributed to drug exposure in late gestation and during lactation. Significant levels of losartan and its active metabolite were shown t…

🤰 Pregnancy ~2 min read

8.1Pregnancy Risk Summary Losartan potassium can cause fetal harm when administered to a pregnant woman. Use of drugs that act on the renin-angiotensin system during the second and third trimesters of pregnancy reduces fetal renal function and increases fetal and neonatal morbidity and death. Most epidemiologic studies examining fetal abnormalities after exposure to antihypertensive use in the first trimester have not distinguished drugs affecting the renin-angiotensin system from other antihypertensive agents.

When pregnancy is detected, discontinue losartan potassium as soon as possible ( see Clinical Considerations ). The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes.

In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively. Clinical Considerations Disease-associated Maternal and/or Embryo/Fetal Risk Hypertension in pregnancy increases the maternal risk for pre-eclampsia, gestational diabetes, premature delivery, and delivery complications (e.g., need for cesarean section, post-partum hemorrhage). Hypertension increases the fetal risk for intrauterine growth restriction and intrauterine death.

Pregnant women with hypertension should be carefully monitored and managed accordingly. Fetal/Neonatal Adverse Reactions Oligohydramnios in pregnant women who use drugs affecting the renin-angiotensin system in the second and third trimesters of pregnancy can result in the following: reduced fetal renal function leading to anuria and renal failure, fetal lung hypoplasia, skeletal deformations, including skull hypoplasia, hypotension, and death. In the unusual case that there is no appropriate alternative to therapy with drugs affecting the renin-angiotensin system for a particular patient, apprise the mother of the potential risk to the fetus.

In patients taking losartan potassium during pregnancy, perform serial ultrasound examinations to assess the intra-amniotic environment. Fetal testing may be appropriate, based on the week of gestation. If oligohydramnios is observed, discontinue losartan potassium, unless it is considered lifesaving for the mother.

Patients and physicians should be aware, however, that oligohydramnios may not appear until after the fetus has sustained irreversible injury. Closely observe neonates with histories of in utero exposure to losartan potassium for hypotension, oliguria, and hyperkalemia. In neonates with a history of in utero exposure to losartan potassium, if oliguria or hypotension occurs, support blood pressure and renal perfusion.

Exchange transfusions or dialysis may be required as a means of reversing hypotension and replacing renal function. Data Animal Data Losartan potassium was administered orally to rats during the period of late gestation through lactation (Gestation Day 15 through Lactation Day 20) at doses of 10, 25, and 100 mg/kg/day. Losartan potassium has been shown to produce adverse effects in rat fetuses and neonates, including decreased body weight, delayed physical and behavioral development, mortality and renal toxicity.

With the exception of neonatal weight gain (which was affected at doses as low as 10 mg/kg/day), doses associated with these effects exceeded 25 mg/kg/day (approximately three times the maximum recommended human dose of 100 mg on a mg/m 2 basis). These findings are attributed to drug exposure in late gestation and during lactation. Significant levels of losartan and its active metabolite were shown to be present in rat fetal plasma during late gestation and in rat milk.

🧒 Pediatric Use 65 words

8.4Pediatric Use Antihypertensive effects of losartan potassium have been established in hypertensive pediatric patients aged 6 to 16 years. Safety and effectiveness have not been established in pediatric patients under the age of 6 or in pediatric patients with glomerular filtration rate <30 mL/min/1.73 m 2 [see Dosage and Administration ( 2.1 ), Clinical Pharmacology ( 12.3 ), and Clinical Studies ( 14.1 )].

🧓 Geriatric Use 127 words

8.5Geriatric Use Of the total number of patients receiving losartan potassium in controlled clinical studies for hypertension, 391 patients (19%) were 65 years and over, while 37 patients (2%) were 75 years and over. In a controlled clinical study for renal protection in type 2 diabetic patients with proteinuria, 248 patients (33%) were 65 years and over. In a controlled clinical study for the reduction in the combined risk of cardiovascular death, stroke and myocardial infarction in hypertensive patients with left ventricular hypertrophy, 2857 patients (62%) were 65 years and over, while 808 patients (18%) were 75 years and over.

No overall differences in effectiveness or safety were observed between these patients and younger patients, but greater sensitivity of some older individuals cannot be ruled out.

🆘 Overdosage 84 words

10 OVERDOSAGE Significant lethality was observed in mice and rats after oral administration of 1000 mg/kg and 2000 mg/kg, respectively, about 44 and 170 times the maximum recommended human dose on a mg/m 2 basis. Limited data are available in regard to overdosage in humans. The most likely manifestation of overdosage would be hypotension and tachycardia; bradycardia could occur from parasympathetic (vagal) stimulation.

If symptomatic hypotension should occur, supportive treatment should be instituted. Neither losartan nor its active metabolite can be removed by hemodialysis.

🧬 Clinical Pharmacology ~3 min read

12 CLINICAL PHARMACOLOGY

12.1Mechanism of Action Angiotensin II [formed from angiotensin I in a reaction catalyzed by angiotensin converting enzyme (ACE, kininase II)] is a potent vasoconstrictor, the primary vasoactive hormone of the renin-angiotensin system, and an important component in the pathophysiology of hypertension. It also stimulates aldosterone secretion by the adrenal cortex. Losartan and its principal active metabolite block the vasoconstrictor and aldosterone-secreting effects of angiotensin II by selectively blocking the binding of angiotensin II to the AT 1 receptor found in many tissues, (e.g., vascular smooth muscle, adrenal gland).

There is also an AT 2 receptor found in many tissues but it is not known to be associated with cardiovascular homeostasis. Neither losartan nor its principal active metabolite exhibits any partial agonist activity at the AT 1 receptor, and both have much greater affinity (about 1000-fold) for the AT 1 receptor than for the AT 2 receptor. In vitro binding studies indicate that losartan is a reversible, competitive inhibitor of the AT 1 receptor.

The active metabolite is 10 to 40 times more potent by weight than losartan and appears to be a reversible, non-competitive inhibitor of the AT 1 receptor. Neither losartan nor its active metabolite inhibits ACE (kininase II, the enzyme that converts angiotensin I to angiotensin II and degrades bradykinin), nor do they bind to or block other hormone receptors or ion channels known to be important in cardiovascular regulation.

12.2Pharmacodynamics Losartan inhibits the pressor effect of angiotensin II (as well as angiotensin I) infusions. A dose of 100 mg inhibits the pressor effect by about 85% at peak with 25 to 40% inhibition persisting for 24 hours. Removal of the negative feedback of angiotensin II causes a doubling to tripling in plasma renin activity and consequent rise in angiotensin II plasma concentration in hypertensive patients.

Losartan does not affect the response to bradykinin, whereas ACE inhibitors increase the response to bradykinin. Aldosterone plasma concentrations fall following losartan administration. In spite of the effect of losartan on aldosterone secretion, very little effect on serum potassium was observed.

The effect of losartan is substantially present within one week but in some studies the maximal effect occurred in 3 to 6 weeks. In long-term follow-up studies (without placebo control) the effect of losartan appeared to be maintained for up to a year. There is no apparent rebound effect after abrupt withdrawal of losartan.

There was essentially no change in average heart rate in losartan-treated patients in controlled trials.

12.3Pharmacokinetics Absorption: Following oral administration, losartan is well absorbed and undergoes substantial first-pass metabolism. The systemic bioavailability of losartan is approximately 33%. Mean peak concentrations of losartan and its active metabolite are reached in 1 hour and in 3 to 4 hours, respectively.

While maximum plasma concentrations of losartan and its active metabolite are approximately equal, the AUC (area under the curve) of the metabolite is about 4 times as great as that of losartan. A meal slows absorption of losartan and decreases its C max but has only minor effects on losartan AUC or on the AUC of the metabolite (~10% decrease). The pharmacokinetics of losartan and its active metabolite are linear with oral losartan doses up to 200 mg and do not change over time.

Distribution: The volume of distribution of losartan and the active metabolite is about 34 liters and 12 liters, respectively. Both losartan and its active metabolite are highly bound to plasma proteins, primarily albumin, with plasma free fractions of 1.3% and 0.2%, respectively. Plasma protein binding is constant over the concentration range achieved with recommended doses.

Studies in rats indicate that losartan crosses the blood-brain barrier poorly, if at all. Metabolism: Losartan is an ora…

🧬 Mechanism of Action ~1 min read

12.1Mechanism of Action Angiotensin II [formed from angiotensin I in a reaction catalyzed by angiotensin converting enzyme (ACE, kininase II)] is a potent vasoconstrictor, the primary vasoactive hormone of the renin-angiotensin system, and an important component in the pathophysiology of hypertension. It also stimulates aldosterone secretion by the adrenal cortex. Losartan and its principal active metabolite block the vasoconstrictor and aldosterone-secreting effects of angiotensin II by selectively blocking the binding of angiotensin II to the AT 1 receptor found in many tissues, (e.g., vascular smooth muscle, adrenal gland).

There is also an AT 2 receptor found in many tissues but it is not known to be associated with cardiovascular homeostasis. Neither losartan nor its principal active metabolite exhibits any partial agonist activity at the AT 1 receptor, and both have much greater affinity (about 1000-fold) for the AT 1 receptor than for the AT 2 receptor. In vitro binding studies indicate that losartan is a reversible, competitive inhibitor of the AT 1 receptor.

The active metabolite is 10 to 40 times more potent by weight than losartan and appears to be a reversible, non-competitive inhibitor of the AT 1 receptor. Neither losartan nor its active metabolite inhibits ACE (kininase II, the enzyme that converts angiotensin I to angiotensin II and degrades bradykinin), nor do they bind to or block other hormone receptors or ion channels known to be important in cardiovascular regulation.

📦 How Supplied / Storage and Handling 112 words

16 HOW SUPPLIED/STORAGE AND HANDLING Losartan Potassium USP 25 mg tablets are white to off-white, oval shaped, film-coated tablets with “A” engraved on one side and “25” on the other side. They are supplied as follows: NDC 71335-1136-1: 90 Tablets in a BOTTLE NDC 71335-1136-2: 30 Tablets in a BOTTLE NDC 71335-1136-3: 60 Tablets in a BOTTLE NDC 71335-1136-4: 100 Tablets in a BOTTLE NDC 71335-1136-5: 10 Tablets in a BOTTLE NDC 71335-1136-6: 7 Tablets in a BOTTLE Store at 25ºC (77ºF); excursions permitted to 15 to 30ºC (59 to 86ºF) [see USP Controlled Room Temperature].

Keep container tightly closed. Protect from light. Repackaged/Relabeled by: Bryant Ranch Prepack, Inc.

Burbank, CA 91504

📋 Description 181 words

11 DESCRIPTION Losartan potassium tablets USP is an angiotensin II receptor blocker acting on the AT 1 receptor subtype. Losartan potassium, a non-peptide molecule, is chemically described as 2-butyl-4-chloro-1-[ p -( o -1 H ­tetrazol-5-ylphenyl)benzyl]imidazole-5-methanol monopotassium salt. Its molecular formula is C 22 H 22 ClKN 6 O, and its structural formula is: Losartan potassium USP is a white to off-white free-flowing crystalline powder with a molecular weight of 461.01.

It is freely soluble in water, soluble in alcohols, and slightly soluble in common organic solvents, such as acetonitrile and methyl ethyl ketone. Oxidation of the 5-hydroxymethyl group on the imidazole ring results in the active metabolite of losartan. Losartan potassium is available as tablets for oral administration containing either 25 mg, 50 mg or 100 mg of losartan potassium and the following inactive ingredients: Microcrystalline cellulose, lactose monohydrate, pregelatinized starch, magnesium stearate, Opadry white (hydroxypropyl cellulose, hypromellose and titanium dioxide).

Losartan potassium 25 mg, 50 mg and 100 mg tablets contain potassium in the following amounts: 2.12 mg (0.054 mEq), 4.24 mg (0.108 mEq) and 8.48 mg (0.216 mEq), respectively.

💬 Information for Patients 108 words

17 PATIENT COUNSELING INFORMATION Advise the patient to read the FDA-approved patient labeling (Patient Information). Pregnancy Advise female patients of childbearing age about the consequences of exposure to losartan potassium during pregnancy. Discuss treatment options with women planning to become pregnant.

Tell patients to report pregnancies to their physicians as soon as possible [see Warnings and Precautions (5.1) and Use in Specific Populations (8.1)]. Potassium Supplements Advise patients receiving losartan potassium not to use potassium supplements or salt substitutes containing potassium without consulting their healthcare provider [see Drug Interactions (7.1)]. Manufactured by: Micro Labs Limited Goa-403 722, INDIA.

Manufactured for: Micro Labs USA, Inc. Somerset, NJ 08873 Rev.11/2021

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