Home › NDC Lookup › Ingredients › Ethacrynic Acid › 72162-2257-01
Ethacrynic Acid 25 mg Tablet, 100-count — NDC 72162-2257-01 package photo
Label image from the product's FDA listing (DailyMed) — may show a different pack size or an older label revision.

Ethacrynic Acid 25 mg Tablet, 100-count — NDC 72162-2257-1 (Billing 72162-2257-01)

by Bryant Ranch Prepack · 100 TABLET in 1 BOTTLE

This is a package of 100 tablets of Ethacrynic Acid 25 mg Tablet from Bryant Ranch Prepack, marketed since Aug 2019 and currently FDA-listed. It is this product's only package size.

NDC 72162-2257-01
🏷️ FDA NDC (as labeled) 72162-2257-1 billing pads the package segment with a zero
Rx only Generic On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Jul 24, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

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

NDC database record

One package, one record: these facts belong to NDC 72162-2257-1 alone.

Record
FDA NDC Directory package listing · Human prescription drug
Code segments
72162 labeler · 2257 product · 1 package
Package marketed since
Aug 27, 2019
Sample package
No — commercial package
Listing certified through
Dec 31, 2026
Billing quantity
100 EA per package
Barcode (UPC-A, from the NDC)
3 7216222571 4
FDA record last changed
Jul 24, 2026

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 72162-2257-1
Product NDC 72162-2257
11-digit billing NDC 72162225701
NCPDP billing unit EA — each (per item)
RxCUI 1251903
UNII M5DP350VZV
Application # ANDA211232
SPL Set ID fd1b7fb4-fe56-4f2d-860d-bbcea16adfea
Established class (EPC) Loop Diuretic
Physiologic effect Increased Diuresis at Loop of Henle
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2019-08-27
Route ORAL
Dosage form TABLET
Substance ETHACRYNIC ACID
TE code (Orange Book) AB · RLD · RS

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

GCN Seq No 008201
GCN 34910
HICL code 003659
Ingredient (HICL) Ethacrynic Acid
HIC1 code R
Therapeutic class — broad (HIC1) Kidney/Urinary Tract
HIC2 code R1
Therapeutic class — intermediate (HIC2) Affect Primarily Kidneys/Urinary Tract
HIC3 code R1M
Therapeutic class — specific (HIC3) Loop Diuretics
AHFS code 24:36.08.00
AHFS class Loop Diuretics (24:36)
FDB label name ETHACRYNIC ACID 25 MG TABLET
FDB brand name Ethacrynic Acid
Legend status F — Federal legend — prescription drug or device
Quick answers
  • GSN (GCN sequence number): 008201
  • GCN: 34910
  • HICL (First Databank): 003659
  • AHFS class code: 24:36.08.00
  • RxCUI (RxNorm): 1251903
Why two NDCs? The FDA registers this code as 72162-2257-1 — 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 → 72162-2257-01. 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 Loop Diuretic class.

Pharmacologic class Loop Diuretic
Drug family (ATC) Aryloxyacetic acid derivatives
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

Clinical

Label name ETHACRYNIC ACID 25 MG TABLET Ingredient Ethacrynic Acid
📗 Our plain-language guide HelloPharmacist
  • It's a strong diuretic — a water pill — used when milder diuretics aren't cutting it. Most commonly, you'd be prescribed it for fluid buildup (edema) related to congestive heart fa...
  • What is ethacrynic acid actually used for?
  • Take it by mouth after a meal — food helps reduce stomach upset. Your prescriber will tell you whether to take it once a day, twice a day, or on an every-other-day schedule. Start...
  • How should I take my ethacrynic acid tablet?
📖 Read our full Ethacrynic Acid guide →
8
Nutrient depletion considerations

Ethacrynic Acid may be associated with lower levels of 8 nutrients — worth a chat with your pharmacist, not a cause for alarm.

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

Pricing

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

Price systemPer eachPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · Q2 2026 $1.66 $166.41 / 100 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.

Packaging — all sizes for this product

Package NDCDescription Marketing startMarketing endStatus
72162-2257-01 You're viewing this Main listing 100 TABLET in 1 BOTTLE 2019-08-27 — Active

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Ethacrynic Acid 25 mg 00832-1690-11 Upsher-Smith 100 tablets $0.807 AB Availability likely —
Ethacrynic Acid 25 mg 42799-0405-01 Edenbridge 100 tablets $0.807 AB Availability likely —
Ethacrynic Acid 25 mg 68180-0159-01 Lupin 100 tablets $0.807 AB Availability likely —
Ethacrynic Acid 25 mg 69238-1126-01 Amneal 100 tablets $0.807 AB Availability likely —
ethacrynic acid 25 mg 68682-0011-10 Oceanside 100 tablets $1.614 AB FDA listed —
Edecrin 25 mg 25010-0215-15 Bausch 100 tablets — AB FDA listed —
Ethacrynic Acid 25 mg 50228-0334-01 ScieGen 1000 tablets — AB FDA listed —
Ethacrynic acid 25 mg 52817-0367-10 TRUPHARMA 100 tablets — AB FDA listed —
Ethacrynic Acid 25 mg 60760-0773-30 St. 30 tablets — AB FDA listed —
Ethacrynic Acid 25 mgthis 72162-2257-01 Bryant 100 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

🏛️
2019
On the market since
Aug 2019
📍
2026
Currently FDA-listed
7 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.

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.

Loading inactive ingredients from the official FDA label in the background. No external source is being called by this page request.
Where does this data come from?
Source: official FDA Structured Product Labeling (SPL) via DailyMed and the openFDA label index. Structured IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.

Inactive ingredient FAQ

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

Manufacturer & labeler

LabelerBryant Ranch Prepack
Application holderSCIEGEN PHARMACEUTICALS INC
FDA applicationANDA211232 (ANDA)
Labeler code72162
First marketedAug 2019
Product typeHuman Prescription Drug
Portfolio4,436 products on file

More NDCs from Bryant Ranch Prepack labeler code 72162

The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Very long sections are excerpted here and marked; the full text is on DailyMed (linked in the sources below). Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration ⛔ Contraindications ⚠️ Warnings 🤒 Adverse Reactions 🔄 Drug Interactions 🤰 Pregnancy 🧒 Pediatric Use 🧓 Geriatric Use 🆘 Overdosage 🧬 Clinical Pharmacology 📦 How Supplied / Storage and Handling 📋 Description ⚠️ Precautions 🍼 Nursing Mothers 🧬 Pharmacokinetics 📄 Carcinogenesis, Mutagenesis, Impairment of Fertility 📄 Package Label / Principal Display Panel
🎯 Indications and Usage 74 words ▾

INDICATIONS AND USAGE Ethacrynic Acid Tablets, USP are indicated for treatment of edema when an agent with greater diuretic potential than those commonly employed is required. Treatment of the edema associated with congestive heart failure, cirrhosis of the liver, and renal disease, including the nephrotic syndrome. Short-term management of ascites due to malignancy, idiopathic edema, and lymphedema.

Short-term management of hospitalized pediatric patients, other than infants, with congenital heart disease or the nephrotic syndrome.

⏱️ Dosage and Administration ~3 min read ▾

DOSAGE AND ADMINISTRATION Dosage must be regulated carefully to prevent a more rapid or substantial loss of fluid or electrolyte than is indicated or necessary. The magnitude of diuresis and natriuresis is largely dependent on the degree of fluid accumulation present in the patient. Similarly, the extent of potassium excretion is determined in large measure by the presence and magnitude of aldosteronism.

Oral Use Ethacrynic Acid Tablets, USP are available for oral use as 25 mg tablets. Dosage: To Initiate Diuresis In Adults: The smallest dose required to produce gradual weight loss (about 1 pound to 2 pounds per day) is recommended. Onset of diuresis usually occurs at 50 mg to 100 mg for adults.

After diuresis has been achieved, the minimally effective dose (usually from 50 mg to 200 mg daily) may be given on a continuous or intermittent dosage schedule. Dosage adjustments are usually in 25 mg to 50 mg increments to avoid derangement of water and electrolyte excretion. The patient should be weighed under standard conditions before and during the institution of diuretic therapy with this compound.

Small alterations in dose should effectively prevent a massive diuretic response. The following schedule may be helpful in determining the smallest effective dose. Day 1 — 50 mg once daily after a meal Day 2 — 50 mg twice daily after meals, if necessary Day 3 — 100 mg in the morning and 50 mg to 100 mg following the afternoon or evening meal, depending upon response to the morning dose.

A few patients may require initial and maintenance doses as high as 200 mg twice daily. These higher doses, which should be achieved gradually, are most often required in patients with severe, refractory edema. In Pediatric Patients (excluding infants, see CONTRAINDICATIONS ) : The initial dose should be 25 mg.

Careful stepwise increments in dosage of 25 mg should be made to achieve effective maintenance. Maintenance Therapy It is usually possible to reduce the dosage and frequency of administration once dry weight has been achieved. Ethacrynic Acid Tablets, USP may be given intermittently after an effective diuresis is obtained with the regimen outlined above.

Dosage may be on an alternate daily schedule or more prolonged periods of diuretic therapy may be interspersed with rest periods. Such an intermittent dosage schedule allows time for correction of any electrolyte imbalance and may provide a more efficient diuretic response. The chloruretic effect of this agent may give rise to retention of bicarbonate and a metabolic alkalosis.

This may be corrected by giving chloride (ammonium chloride or arginine chloride). Ammonium chloride should not be given to cirrhotic patients. Ethacrynic Acid Tablets, USP has additive effects when used with other diuretics.

For example, a patient who is on maintenance dosage of an oral diuretic may require additional intermittent diuretic therapy, such as an organomercurial, for the maintenance of basal weight. The intermittent use of Ethacrynic Acid Tablets, USP orally may eliminate the need for injections of organomercurials. Small doses of Ethacrynic Acid Tablets, USP may be added to existing diuretic regimens to maintain basal weight.

This drug may potentiate the action of carbonic anhydrase inhibitors, with augmentation of natriuresis and kaliuresis. Therefore, when adding ethacrynic acid the initial dose and changes of dose should be in 25 mg increments, to avoid electrolyte depletion. Rarely, patients who failed to respond to ethacrynic acid have responded to older established agents.

While many patients do not require supplemental potassium, the use of potassium chloride or potassium sparing agents, or both, during treatment with Ethacrynic Acid Tablets, USP is advisable, especially in cirrhotic or nephrotic patients and in patients receiving digitalis. Salt liberalization usually prevents the development of hyponatremia and hypochloremia. During treatment with Ethacrynic Acid Tablets, USP salt may be liberalize… [Excerpted — this section continues on DailyMed.]

⛔ Contraindications 75 words ▾

CONTRAINDICATIONS All diuretics, including ethacrynic acid, are contraindicated in anuria. If increasing electrolyte imbalance, azotemia, and/or oliguria occur during treatment of severe, progressive renal disease, the diuretic should be discontinued. In a few patients this diuretic has produced severe, watery diarrhea.

If this occurs, it should be discontinued and not used again. Until further experience in infants is accumulated, therapy with oral and parenteral ethacrynic acid is contraindicated. Hypersensitivity to any component of this product.

⚠️ Warnings ~2 min read ▾

WARNINGS The effects of ethacrynic acid on electrolytes are related to its renal pharmacologic activity and are dose dependent. The possibility of profound electrolyte and water loss may be avoided by weighing the patient throughout the treatment period, by careful adjustment of dosage, by initiating treatment with small doses, and by using the drug on an intermittent schedule when possible. When excessive diuresis occurs, the drug should be withdrawn until homeostasis is restored.

When excessive electrolyte loss occurs, the dosage should be reduced or the drug temporarily withdrawn. Initiation of diuretic therapy with ethacrynic acid in the cirrhotic patient with ascites is best carried out in the hospital. When maintenance therapy has been established, the individual can be satisfactorily followed as an outpatient.

Ethacrynic acid should be given with caution to patients with advanced cirrhosis of the liver, particularly those with a history of previous episodes of electrolyte imbalance or hepatic encephalopathy. Like other diuretics it may precipitate hepatic coma and death. Too vigorous a diuresis, as evidenced by rapid and excessive weight loss, may induce an acute hypotensive episode.

In elderly cardiac patients, rapid contraction of plasma volume and the resultant hemoconcentration should be avoided to prevent the development of thromboembolic episodes, such as cerebral vascular thromboses and pulmonary emboli which may be fatal. Excessive loss of potassium in patients receiving digitalis glycosides may precipitate digitalis toxicity. Care should also be exercised in patients receiving potassium-depleting steroids.

A number of possibly drug-related deaths have occurred in critically ill patients refractory to other diuretics. These generally have fallen into two categories: (1) patients with severe myocardial disease who have been receiving digitalis and presumably developed acute hypokalemia with fatal arrhythmia; (2) patients with severely decompensated hepatic cirrhosis with ascites, with or without accompanying encephalopathy, who were in electrolyte imbalance and died because of intensification of the electrolyte defect. Deafness, tinnitus, and vertigo with a sense of fullness in the ears have occurred, most frequently in patients with severe impairment of renal function.

These symptoms have been associated most often with intravenous administration and with doses in excess of those recommended. The deafness has usually been reversible and of short duration (one to 24 hours). However, in some patients the hearing loss has been permanent.

A number of these patients were also receiving drugs known to be ototoxic. Ethacrynic acid may increase the ototoxic potential of other drugs (see PRECAUTIONS , Drug Interactions) . Lithium generally should not be given with diuretics (see PRECAUTIONS , Drug Interactions) .

🤒 Adverse Reactions 206 words ▾

ADVERSE REACTIONS Gastrointestinal Anorexia, malaise, abdominal discomfort or pain, dysphagia, nausea, vomiting, and diarrhea have occurred. These are more frequent with large doses or after one to three months of continuous therapy. A few patients have had sudden onset of profuse, watery diarrhea.

Discontinue Ethacrynic Acid Tablets, USP if diarrhea is severe and do not give it again. Gastrointestinal bleeding has occurred in some patients. Rarely, acute pancreatitis has been reported.

Metabolic Reversible hyperuricemia and acute gout have been reported. Acute symptomatic hypoglycemia with convulsions occurred in two uremic patients who received doses above those recommended. Hyperglycemia has been reported.

Rarely, jaundice and abnormal liver function tests have been reported in seriously ill patients receiving multiple drug therapy, including Ethacrynic Acid Tablets, USP. Hematologic Agranulocytosis or severe neutropenia has been reported in a few critically ill patients also receiving agents known to produce this effect. Thrombocytopenia has been reported rarely.

Henoch-Schönlein purpura has been reported rarely in patients with rheumatic heart disease receiving multiple drug therapy, including Ethacrynic Acid Tablets, USP. Special Senses (see WARNINGS ) Deafness, tinnitus and vertigo with a sense of fullness in the ears, and blurred vision have occurred. Central Nervous System Headache, fatigue, apprehension, confusion.

Miscellaneous Skin rash, fever, chills, hematuria.

🔄 Drug Interactions 141 words ▾

Drug Interactions Lithium generally should not be given with diuretics because they reduce its renal clearance and add a high risk of lithium toxicity. Read circulars for lithium preparations before use of such concomitant therapy. Ethacrynic acid may increase the ototoxic potential of other drugs such as aminoglycoside and some cephalosporin antibiotics.

Their concurrent use should be avoided. A number of drugs, including ethacrynic acid, have been shown to displace warfarin from plasma protein; a reduction in the usual anticoagulant dosage may be required in patients receiving both drugs. In some patients, the administration of a non-steroidal anti-inflammatory agent can reduce the diuretic, natriuretic, and antihypertensive effects of loop, potassium-sparing and thiazide diuretics.

Therefore, when ethacrynic acid and non-steroidal anti-inflammatory agents are used concomitantly, the patient should be observed closely to determine if the desired effect of the diuretic is obtained.

🤰 Pregnancy 151 words ▾

Pregnancy Pregnancy Category B: Reproduction studies in the mouse and rabbit at doses up to 50 times the human dose showed no evidence of external abnormalities of the fetus due to ethacrynic acid. In a two-litter study in the dog and rat, oral doses of 5 mg/kg/day or 20 mg/kg/day (2½ or 10 times the human dose), respectively, did not interfere with pregnancy or with growth and development of the pups. Although there was reduction in the mean body weights of the fetuses in a teratogenic study in the rat at a dose level of 100 mg/kg (50 times the human dose), there was no effect on mortality or postnatal development.

Functional and morphologic abnormalities were not observed. There are, however, no adequate and well-controlled studies in pregnant women. Since animal reproduction studies are not always predictive of human response, ethacrynic acid should be used during pregnancy only if clearly needed.

🧒 Pediatric Use 70 words ▾

Pediatric Use There are no well-controlled clinical trials in pediatric patients. The information on oral dosing in pediatric patients, other than infants, is supported by evidence from empiric use in this age group. For information on oral use in pediatric patients, other than infants, see INDICATIONS AND USAGE and DOSAGE AND ADMINISTRATION . Safety and effectiveness of oral and parenteral use in infants have not been established (see CONTRAINDICATIONS ).

🧓 Geriatric Use 142 words ▾

Geriatric Use Of the total number of subjects in clinical studies of ethacrynic acid, approximately 224 patients (21%) were 65 to 74 years of age, while approximately 100 patients (9%) were 75 years of age and over. No overall differences in safety or effectiveness were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. (See WARNINGS .) This drug is known to be substantially excreted by the kidney, and the risk of toxic reactions to this drug may be greater in patients with impaired renal function.

Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function. (See CONTRAINDICATIONS .)

🆘 Overdosage 66 words ▾

OVERDOSAGE Overdosage may lead to excessive diuresis with electrolyte depletion and dehydration. In the event of overdosage, symptomatic and supportive measures should be employed. Emesis should be induced or gastric lavage performed.

Correct dehydration, electrolyte imbalance, hepatic coma, and hypotension by established procedures. If required, give oxygen or artificial respiration for respiratory impairment. In the mouse, the oral LD 50 of ethacrynic acid is 627 mg/kg.

🧬 Clinical Pharmacology ~1 min read ▾

CLINICAL PHARMACOLOGY Pharmacokinetics and Metabolism Ethacrynic acid acts on the ascending limb of the loop of Henle and on the proximal and distal tubules. Urinary output is usually dose dependent and related to the magnitude of fluid accumulation. Water and electrolyte excretion may be increased several times over that observed with thiazide diuretics, since ethacrynic acid inhibits reabsorption of a much greater proportion of filtered sodium than most other diuretic agents.

Therefore, ethacrynic acid is effective in many patients who have significant degrees of renal insufficiency (see WARNINGS concerning deafness ) . Ethacrynic acid has little or no effect on glomerular filtration or on renal blood flow, except following pronounced reductions in plasma volume when associated with rapid diuresis. The electrolyte excretion pattern of ethacrynic acid varies from that of the thiazides and mercurial diuretics.

Initial sodium and chloride excretion is usually substantial and chloride loss exceeds that of sodium. With prolonged administration, chloride excretion declines, and potassium and hydrogen ion excretion may increase. Ethacrynic acid is effective whether or not there is clinical acidosis or alkalosis.

Although ethacrynic acid, in carefully controlled studies in animals and experimental subjects, produces a more favorable sodium/potassium excretion ratio than the thiazides, in patients with increased diuresis excessive amounts of potassium may be excreted. Onset of action is rapid, usually within 30 minutes after an oral dose of ethacrynic acid. After oral use, diuresis peaks in about 2 hours and lasts about 6 to 8 hours.

The sulfhydryl binding propensity of ethacrynic acid differs somewhat from that of the organomercurials. Its mode of action is not by carbonic anhydrase inhibition. Ethacrynic acid does not cross the blood-brain barrier.

📦 How Supplied / Storage and Handling 71 words ▾

HOW SUPPLIED Ethacrynic Acid Tablets, USP 25 mg, are white, capsule shaped scored (functional scoring) tablets debossed with 'SG' on scored side and '334' on the other side and supplied as NDC 72162-2257-1: 100 Tablets in a BOTTLE Storage Store in a tightly closed container at 25°C (77°F); excursions permitted to 15° to 30°C (59° to 86°F) [See USP Controlled Room Temperature]. Repackaged/Relabeled by: Bryant Ranch Prepack, Inc. Burbank, CA 91504

📋 Description 113 words ▾

DESCRIPTION Ethacrynic acid is an unsaturated ketone derivative of an aryloxyacetic acid. It is designated chemically as [2,3-dichloro-4-(2-methylene-1-oxobutyl)phenoxy] acetic acid, and has a molecular weight of 303.14. Ethacrynic acid is a white, or practically white, odor less or practically odorless, crystalline powder, freely soluble in alcohol, chloroform and ether, very slightly soluble in water.

Its empirical formula is C 13 H 12 Cl 2 O 4 and its structural formula is: Ethacrynic Acid Tablets USP are supplied as 25 mg tablets for oral use. The tablets contain the following inactive ingredients: lactose monohydrate, pregelatinized starch (corn), colloidal silicon dioxide, talc and calcium stearate. FDA approved dissolution specification differs from the USP dissolution specification.

⚠️ Precautions ~3 min read ▾

PRECAUTIONS General Weakness, muscle cramps, paresthesias, thirst, anorexia, and signs of hyponatremia, hypokalemia, and/or hypochloremic alkalosis may occur following vigorous or excessive diuresis and these may be accentuated by rigid salt restriction. Rarely, tetany has been reported following vigorous diuresis. During therapy with ethacrynic acid, liberalization of salt intake and supplementary potassium chloride are often necessary.

When a metabolic alkalosis may be anticipated, e.g., in cirrhosis with ascites, the use of potassium chloride or a potassium-sparing agent before and during therapy with ethacrynic acid may mitigate or prevent the hypokalemia. Loop diuretics have been shown to increase the urinary excretion of magnesium; this may result in hypomagnesemia. The safety and efficacy of ethacrynic acid in hypertension have not been established.

However, the dosage of coadministered antihypertensive agents may require adjustment. Orthostatic hypotension may occur in patients receiving other antihypertensive agents when given ethacrynic acid. Ethacrynic acid has little or no effect on glomerular filtration or on renal blood flow, except following pronounced reductions in plasma volume when associated with rapid diuresis.

A transient increase in serum urea nitrogen may occur. Usually, this is readily reversible when the drug is discontinued. As with other diuretics used in the treatment of renal edema, hypoproteinemia may reduce responsiveness to ethacrynic acid and the use of salt-poor albumin should be considered.

A number of drugs, including ethacrynic acid, have been shown to displace warfarin from plasma protein; a reduction in the usual anticoagulant dosage may be required in patients receiving both drugs. Ethacrynic acid may increase the risk of gastric hemorrhage associated with corticosteroid treatment. Laboratory Tests Frequent serum electrolyte, CO 2 and BUN determinations should be performed early in therapy and periodically thereafter during active diuresis.

Any electrolyte abnormalities should be corrected or the drug temporarily withdrawn. Increases in blood glucose and alterations in glucose tolerance tests have been observed in patients receiving ethacrynic acid. Drug Interactions Lithium generally should not be given with diuretics because they reduce its renal clearance and add a high risk of lithium toxicity.

Read circulars for lithium preparations before use of such concomitant therapy. Ethacrynic acid may increase the ototoxic potential of other drugs such as aminoglycoside and some cephalosporin antibiotics. Their concurrent use should be avoided.

A number of drugs, including ethacrynic acid, have been shown to displace warfarin from plasma protein; a reduction in the usual anticoagulant dosage may be required in patients receiving both drugs. In some patients, the administration of a non-steroidal anti-inflammatory agent can reduce the diuretic, natriuretic, and antihypertensive effects of loop, potassium-sparing and thiazide diuretics. Therefore, when ethacrynic acid and non-steroidal anti-inflammatory agents are used concomitantly, the patient should be observed closely to determine if the desired effect of the diuretic is obtained.

Carcinogenesis, Mutagenesis, Impairment of Fertility There was no evidence of a tumorigenic effect in a 79-week oral chronic toxicity study in rats at doses up to 45 times the human dose. Ethacrynic acid had no effect on fertility in a two-litter study in rats or a two-generation study in mice at 10 times the human dose. Pregnancy Pregnancy Category B: Reproduction studies in the mouse and rabbit at doses up to 50 times the human dose showed no evidence of external abnormalities of the fetus due to ethacrynic acid.

In a two-litter study in the dog and rat, oral doses of 5 mg/kg/day or 20 mg/kg/day (2½ or 10 times the human dose), respectively, did not interfere with pregnancy or with growth and development of the pups. Although there was reduction in the mean body… [Excerpted — this section continues on DailyMed.]

🍼 Nursing Mothers 62 words ▾

Nursing Mothers It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from ethacrynic acid, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

🧬 Pharmacokinetics ~1 min read ▾

Pharmacokinetics and Metabolism Ethacrynic acid acts on the ascending limb of the loop of Henle and on the proximal and distal tubules. Urinary output is usually dose dependent and related to the magnitude of fluid accumulation. Water and electrolyte excretion may be increased several times over that observed with thiazide diuretics, since ethacrynic acid inhibits reabsorption of a much greater proportion of filtered sodium than most other diuretic agents.

Therefore, ethacrynic acid is effective in many patients who have significant degrees of renal insufficiency (see WARNINGS concerning deafness ) . Ethacrynic acid has little or no effect on glomerular filtration or on renal blood flow, except following pronounced reductions in plasma volume when associated with rapid diuresis. The electrolyte excretion pattern of ethacrynic acid varies from that of the thiazides and mercurial diuretics.

Initial sodium and chloride excretion is usually substantial and chloride loss exceeds that of sodium. With prolonged administration, chloride excretion declines, and potassium and hydrogen ion excretion may increase. Ethacrynic acid is effective whether or not there is clinical acidosis or alkalosis.

Although ethacrynic acid, in carefully controlled studies in animals and experimental subjects, produces a more favorable sodium/potassium excretion ratio than the thiazides, in patients with increased diuresis excessive amounts of potassium may be excreted. Onset of action is rapid, usually within 30 minutes after an oral dose of ethacrynic acid. After oral use, diuresis peaks in about 2 hours and lasts about 6 to 8 hours.

The sulfhydryl binding propensity of ethacrynic acid differs somewhat from that of the organomercurials. Its mode of action is not by carbonic anhydrase inhibition. Ethacrynic acid does not cross the blood-brain barrier.

📄 Carcinogenesis, Mutagenesis, Impairment of Fertility 56 words ▾

Carcinogenesis, Mutagenesis, Impairment of Fertility There was no evidence of a tumorigenic effect in a 79-week oral chronic toxicity study in rats at doses up to 45 times the human dose. Ethacrynic acid had no effect on fertility in a two-litter study in rats or a two-generation study in mice at 10 times the human dose.

📄 Package Label / Principal Display Panel 5 words ▾

Ethacrynic Acid 25mg Tablet Label

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

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

Medicare Part D (outpatient prescription) spending for Ethacrynic Acid — the program that covers self-administered drugs. 6 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 Ethacrynic Acid. 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
$1.1M
Claims incl. refills
4.3K
Beneficiaries
2.4K
Spend / beneficiary
$449.97
Spend / claim
$256.75
Trend by period
💵 About the dollar figures: spending is what Part D plans paid before confidential manufacturer rebates, so the program’s real net cost is lower. A blank patient count means fewer than 11 people — CMS hides counts that small to protect privacy. Source: CMS Medicare Quarterly Part D Spending by Drug (data.cms.gov), updated quarterly.

About this NDC listing & data coverage

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

Questions about this listing

Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The form printed on the packaging and shown on DailyMed is the one the FDA registered. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero and the dashes are dropped. The Identity section at the top of this page lists each form of this code.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Bryant Ranch Prepack. Listing status can change — the directory data on this page refreshes weekly.
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.
← 72162-2256-01 · Bryant 72162-2258-02 · Bryant →
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.