Spironolactone 25 mg Tablet, Film Coated, 60-count
Other active recalls for Spironolactone (different manufacturers) — 1 · tap to view
🆔 Identity & classification
Where does this data come from?
🏷️ RxNorm drug class
This medicine belongs to the Aldosterone Antagonist class.
Where does this data come from?
🏭 Manufacturer & labeler
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🩺 Clinical
Spironolactone is used to treat certain patients with hyperaldosteronism (the body produces too much aldosterone, a naturally occurring hormone); low potassium levels; heart failure; and in patients with edema (fluid retention) caused by various conditions, including liver, or kidney disease. It is also used alone or with other medications to treat high blood pressure. Spironolactone is in a class of medications called aldosterone receptor antagonists. It causes the kidneys to eliminate unneeded water and sodium from the body into the urine but reduces the loss of potassium from the body. High...
Read the full MedlinePlus article ↗- Spironolactone has a few different uses depending on your situation. Most commonly, it's prescribed to treat moderate-to-severe heart failure, high blood pressure, or fluid buildup...
- What exactly is spironolactone used for?
- Yes, it actually matters quite a bit. Food can nearly double the amount of spironolactone your body absorbs. That doesn't mean you must always take it with food — but you should pi...
- Does it matter if I take it with food or not?
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Spironolactone — tap one for details:
Spironolactone may be associated with lower levels of 7 nutrients — worth a chat with your pharmacist, not a cause for alarm.
Where does this data come from?
Ask a licensed pharmacist directly — free, answered by our team.
💊 What it looks like
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🧪 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.
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UNII O7TSZ97GEP
A mineral compound that serves as a filler and binding agent in tablets and capsules. It adds bulk to the medicine and helps hold ingredients together during manufacturing.
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UNII EX438O2MRT
Ferric oxide yellow is a naturally occurring iron compound used as a colorant in medications. It gives tablets, capsules, and other forms a yellow or golden hue for identification and appearance.
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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.
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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.
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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.
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UNII AV092KU4JH
A natural oil extracted from peppermint plants. It's used as a flavoring agent to mask bitter tastes and add a refreshing mint flavor to medicines, making them easier to take.
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UNII B697894SGQ
Polyethylene glycol 400 is a clear, thick liquid made from petroleum-derived polymers. It acts as a solvent and humectant in medicines, helping dissolve active ingredients and retain moisture in the formulation.
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UNII K0KQV10C35
Povidone K25 is a synthetic polymer made from vinyl pyrrolidone. It acts as a binder to hold tablet ingredients together and as a disintegrant to help the tablet break apart in the stomach for better absorption.
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UNII ETJ7Z6XBU4
Silicon dioxide is a naturally occurring mineral used as a glidant and anti-caking agent. It helps powder ingredients flow smoothly and prevents clumping during manufacturing and storage.
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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.
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UNII 7SEV7J4R1U
A powder made from a naturally occurring mineral. In medicines, talc works as a glidant and anti-caking agent, helping tablets and capsules flow smoothly during manufacturing and preventing clumping.
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UNII 15FIX9V2JP
Titanium dioxide is a bright white mineral powder commonly used as a colorant and opacifying agent. It makes pills and tablets white or lighter in color and helps make coatings non-transparent.
12 inactive ingredients listed in the exact product block matched to this NDC.
Where does this data come from?
ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
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💲 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 system | Per each | Per 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 | $0.1319 | $7.91 / 60 tablets |
Where does this data come from?
🔁 Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Spironolactone 25 mg 00378-2146-01 | Mylan | 100 tablets | $0.043 | AB | Availability likely | — |
| spironolactone 25 mg 00904-6927-61 | Major | 100 tablets | $0.043 | AB | Availability likely | — |
| spironolactone 25 mg 31722-0094-01 | Camber | 100 tablets | $0.043 | AB | Availability likely | — |
| Spironolactone 25 mg 51079-0103-20 | Mylan | 1 tablet | $0.043 | AB | Availability likely | — |
| Spironolactone 25 mg 53489-0143-01 | Sun | 100 tablets | $0.043 | AB | Availability likely | — |
| Spironolactone 25 mg 53746-0511-01 | Amneal | 100 tablets | $0.043 | AB | Availability likely | — |
| Spironolactone 25 mg 59651-0426-01 | Aurobindo | 100 tablets | $0.043 | AB | Availability likely | — |
| Spironolactone 25 mg 60687-0465-01 | American | 100 tablets | $0.043 | AB | Availability likely | — |
| Spironolactone 25 mg 64980-0706-01 | Rising | 100 tablets | $0.043 | AB | Availability likely | — |
| spironolactone 25 mg 68382-0660-01 | Zydus | 100 tablets | $0.043 | AB | Availability likely | — |
| Spironolactone 25 mg 69584-0852-10 | Oxford | 100 tablets | $0.043 | AB | Availability likely | — |
| Spironolactone 25 mg 72603-0134-01 | NorthStar | 100 tablets | $0.043 | AB | Availability likely | — |
| Spironolactone 25 mg 16729-0225-01 | Accord | 100 tablets | $0.045 | AB | Availability likely | — |
| Spironolactone 25 mg 59746-0216-01 | Jubilant | 100 tablets | $0.052 | AB | FDA listed | — |
| Aldactone 25 mg 00025-1001-31 | Pfizer | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 00615-8451-05 | NCS | 15 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 42708-0101-30 | QPharma, | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 42708-0126-30 | QPharma, | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 43063-0832-01 | PD-Rx | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 48433-0087-20 | Safecor | 1 tablet | — | AB | FDA listed | — |
| Spironolactone 25 mg 50090-0136-00 | A-S | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 50090-3747-00 | A-S | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 50090-6369-00 | A-S | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 50090-6908-00 | A-S | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 50090-6909-00 | A-S | 90 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 50090-7797-00 | A-S | 90 tablets | — | AB | FDA listed | — |
| spironolactone 25 mg 55154-3556-00 | Cardinal | 10 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 55154-5517-00 | Cardinal | 1 tablet | — | AB | FDA listed | — |
| Spironolactone 25 mg 63187-0841-03 | Proficient | 3 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 63629-1061-01 | Bryant | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 63629-1062-01 | Bryant | 500 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 63629-1064-01 | Bryant | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 63629-1830-01 | Bryant | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 63629-2437-01 | Bryant | 500 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 63629-8539-01 | Bryant | 1000 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 65162-0511-03 | Amneal | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 67046-0744-03 | Coupler | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 67544-0310-30 | Aphena | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 68071-2989-03 | NuCare | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 68071-3375-01 | NuCare | 120 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 68071-3967-03 | NuCare | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 68071-3969-01 | NuCare | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 68788-8545-03 | Preferred | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 70518-3625-00 | REMEDYREPACK | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 70518-4350-00 | REMEDYREPACK | 100 tablets | — | AB | FDA listed | — |
| spironolactone 25 mg 70518-4470-00 | REMEDYREPACK | 1 tablet | — | AB | FDA listed | — |
| spironolactone 25 mg 70771-1027-00 | Zydus | 1000 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mgthis 71205-0146-60 | Proficient | 60 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71205-0772-30 | Proficient | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71335-0053-01 | Bryant | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71335-2205-01 | Bryant | 500 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71335-2217-01 | Bryant | 1000 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71335-2301-01 | Bryant | 1000 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71335-2366-01 | Bryant | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71335-2846-01 | Bryant | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71610-0102-60 | Aphena | 90 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71610-0742-30 | Aphena | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 71610-0970-30 | Aphena | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 72162-1624-01 | Bryant | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 72162-1693-05 | Bryant | 500 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 72162-2150-05 | Bryant | 500 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 72189-0497-90 | Direct_Rx | 90 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 72789-0290-30 | PD-Rx | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 76420-0062-30 | Asclemed | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 76420-0556-01 | Asclemed | 100 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 76420-0925-00 | Asclemed | 1000 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 82804-0255-30 | Proficient | 30 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 82804-0975-00 | Proficient | 100 tablets | — | AB | FDA listed | — |
| spironolactone 25 mg 51655-0636-26 | Northwind | 90 tablets | — | AB | FDA listed | — |
| Spironolactone 25 mg 67296-2319-09 | Redpharm | 90 tablets | — | AB | FDA listed | — |
Where does this data come from?
⏳ Availability & generic status
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?
📊 Medicare Part D spend CMS · PART D · 2026 (Q1)
📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 71205-0146-30 | 30 TABLET, FILM COATED in 1 BOTTLE (71205-146-30) | 2018-11-01 | Active |
| 71205-0146-60 You're viewing this | 60 TABLET, FILM COATED in 1 BOTTLE (71205-146-60) | 2018-11-01 | Active |
| 71205-0146-90 | 90 TABLET, FILM COATED in 1 BOTTLE (71205-146-90) | 2018-11-01 | Active |
You're viewing one of 3 pack sizes for this product.
Pack size FAQ
What quantity is in NDC 71205-0146-60?
What is the difference between NDC 71205-0146-60 and NDC 71205-0146-30?
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🧭 About this NDC listing & data coverage
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. |
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📄 Full prescribing information FDA SPL
🚨 Boxed Warning ▾
WARNING Spironolactone has been shown to be a tumorigen in chronic toxicity studies in rats (see Precautions ). Spironolactone should be used only in those conditions described under Indications and Usage . Unnecessary use of this drug should be avoided.
🎯 Indications and Usage ▾
INDICATIONS AND USAGE Spironolactone tablets are indicated in the management of: Primary hyperaldosteronism for: Establishing the diagnosis of primary hyperaldosteronism by therapeutic trial. Short-term preoperative treatment of patients with primary hyperaldosteronism. Long-term maintenance therapy for patients with discrete aldosterone-producing adrenal adenomas who are judged to be poor operative risks or who decline surgery.
Long-term maintenance therapy for patients with bilateral micro or macronodular adrenal hyperplasia (idiopathic hyperaldosteronism). Edematous conditions for patients with: Congestive heart failure: For the management of edema and sodium retention when the patient is only partially responsive to, or is intolerant of, other therapeutic measures. Spironolactone tablets are also indicated for patients with congestive heart failure taking digitalis when other therapies are considered inappropriate.
Cirrhosis of the liver accompanied by edema and/or ascites: Aldosterone levels may be exceptionally high in this condition. Spironolactone tablets are indicated for maintenance therapy together with bed rest and the restriction of fluid and sodium. Nephrotic syndrome: For nephrotic patients when treatment of the underlying disease, restriction of fluid and sodium intake, and the use of other diuretics do not provide an adequate response.
Essential hypertension Spironolactone tablets are indicated for the treatment of hypertension, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions. These benefits have been seen in controlled trials of antihypertensive drugs from a wide variety of pharmacologic classes.
Control of high blood pressure should be part of comprehensive cardiovascular risk management, including, as appropriate, lipid control, diabetes management, antithrombotic therapy, smoking cessation, exercise, and limited sodium intake. Many patients will require more than one drug to achieve blood pressure goals. For specific advice on goals and management, see published guidelines, such as those of the National High Blood Pressure Education Program’s Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC).
Numerous antihypertensive drugs, from a variety of pharmacologic classes and with different mechanisms of action, have been shown in randomized controlled trials to reduce cardiovascular morbidity and mortality, and it can be concluded that it is blood pressure reduction, and not some other pharmacologic property of the drugs, that is largely responsible for those benefits. The largest and most consistent cardiovascular outcome benefit has been a reduction in the risk of stroke, but reductions in myocardial infarction and cardiovascular mortality also have been seen regularly.
Elevated systolic or diastolic pressure causes increased cardiovascular risk, and the absolute risk increase per mmHg is greater at higher blood pressures, so that even modest reductions of severe hypertension can provide substantial benefit. Relative risk reduction from blood pressure reduction is similar across populations with varying absolute risk, so the absolute benefit is greater in patients who are at higher risk independent of their hypertension (for example, patients with diabetes or hyperlipidemia), and such patients would be expected to benefit from more aggressive treatment to a lower blood pressure goal.
Some antihypertensive drugs have smaller blood pressure effects (as monotherapy) in black patients, and many antihypertensive drugs have additional approved indications and effects (e.g., on angina, heart failure, or diabetic kidney disease). These considerations may guide selection of therapy. Usually in combination with other drugs, spironolactone tablets are indicated for patients who cannot be treated adequately with other agents or for whom other agents are consider…
⏱️ Dosage and Administration ▾
DOSAGE AND ADMINISTRATION Primary hyperaldosteronism. Spironolactone tablets may be employed as an initial diagnostic measure to provide presumptive evidence of primary hyperaldosteronism while patients are on normal diets. Long test: Spironolactone is administered at a daily dosage of 400 mg for three to four weeks.
Correction of hypokalemia and of hypertension provides presumptive evidence for the diagnosis of primary hyperaldosteronism. Short test: Spironolactone is administered at a daily dosage of 400 mg for four days. If serum potassium increases during spironolactone administration but drops when spironolactone is discontinued, a presumptive diagnosis of primary hyperaldosteronism should be considered.
After the diagnosis of hyperaldosteronism has been established by more definitive testing procedures, spironolactone may be administered in doses of 100 to 400 mg daily in preparation for surgery. For patients who are considered unsuitable for surgery, spironolactone may be employed for long-term maintenance therapy at the lowest effective dosage determined for the individual patient. Edema in adults (congestive heart failure, hepatic cirrhosis, or nephrotic syndrome) .
An initial daily dosage of 100 mg of spironolactone administered in either single or divided doses is recommended, but may range from 25 to 200 mg daily. When given as the sole agent for diuresis, spironolactone should be continued for at least five days at the initial dosage level, after which it may be adjusted to the optimal therapeutic or maintenance level administered in either single or divided daily doses. If, after five days, an adequate diuretic response to spironolactone has not occurred, a second diuretic that acts more proximally in the renal tubule may be added to the regimen.
Because of the additive effect of spironolactone when administered concurrently with such diuretics, an enhanced diuresis usually begins on the first day of combined treatment; combined therapy is indicated when more rapid diuresis is desired. The dosage of spironolactone should remain unchanged when other diuretic therapy is added. Essential hypertension.
For adults, an initial daily dosage of 50 to 100 mg of spironolactone administered in either single or divided doses is recommended. Spironolactone may also be given with diuretics that act more proximally in the renal tubule or with other antihypertensive agents. Treatment with spironolactone should be continued for at least two weeks, since the maximum response may not occur before this time.
Subsequently, dosage should be adjusted according to the response of the patient. Hypokalemia. Spironolactone in a dosage ranging from 25 mg to 100 mg daily is useful in treating a diuretic-induced hypokalemia, when oral potassium supplements or other potassium-sparing regimens are considered inappropriate.
Severe heart failure in conjunction with standard therapy (NYHA class III – IV). Treatment should be initiated with spironolactone 25 mg once daily if the patient's serum potassium is ≤5.0 mEq/L and the patient's serum creatinine is ≤ 2.5 mg/dL. Patients who tolerate 25 mg once daily may have their dosage increased to 50 mg once daily as clinically indicated.
Patients who do not tolerate 25 mg once daily dose may have their dosage reduced to 25 mg every other day. See Error! Hyperlink reference not valid. for advice on monitoring serum potassium and serum creatinine.
⛔ Contraindications ▾
CONTRAINDICATIONS Spironolactone is contraindicated for patients with anuria, acute renal insufficiency, significant impairment of renal excretory function, hyperkalemia, Addison’s disease, and with concomitant use of eplerenone.
⚠️ Warnings ▾
WARNINGS Potassium supplementation. Potassium supplementation, either in the form of medication or as a diet rich in potassium, should not ordinarily be given in association with spironolactone therapy. Excessive potassium intake may cause hyperkalemia in patients receiving spironolactone (see Error!
Hyperlink reference not valid. ). Concomitant administration of spironolactone with the following drugs or potassium sources may lead to severe hyperkalemia: • other potassium-sparing diuretics • ACE inhibitors • angiotensin II antagonists • aldosterone blockers • non-steroidal anti-inflammatory drugs (NSAIDs), e.g., indomethacin • heparin and low molecular weight heparin • other drugs or conditions known to cause hyperkalemia • potassium supplements • diet rich in potassium • salt substitutes containing potassium Spironolactone should not be administered concurrently with other potassium-sparing diuretics.
Spironolactone when used with ACE inhibitors or indomethacin, even in the presence of a diuretic, has been associated with severe hyperkalemia. Extreme caution should be exercised when spironolactone is given concomitantly with these drugs. Hyperkalemia in patients with severe heart failure.
Hyperkalemia may be fatal. It is critical to monitor and manage serum potassium in patients with severe heart failure receiving spironolactone. Avoid using other potassium-sparing diuretics.
Avoid using oral potassium supplements in patients with serum potassium > 3.5 mEq/L. The Randomized Spironolactone Evaluation Study excluded patients with a serum creatinine > 2.5 mg/dL or a recent increase in serum creatinine > 25%. The recommended monitoring for potassium and creatinine is one week after initiation or increase in dose of spironolactone, monthly for the first 3 months, then quarterly for a year, and then every 6 months.
Discontinue or interrupt treatment for serum potassium > 5 mEq/L or for serum creatinine > 4 mg/dL. (See Error! Hyperlink reference not valid. , and Error!
Hyperlink reference not valid. .) Spironolactone should be used with caution in patients with impaired hepatic function because minor alterations of fluid and electrolyte balance may precipitate hepatic coma. Lithium generally should not be given with diuretics (see Precautions: Drug interactions ).
🤒 Adverse Reactions ▾
ADVERSE REACTIONS The following adverse reactions have been reported and, within each category (body system), are listed in order of decreasing severity. Digestive: Gastric bleeding, ulceration, gastritis, diarrhea and cramping, nausea, vomiting. Reproductive: Gynecomastia (see Precautions ), inability to achieve or maintain erection, irregular menses or amenorrhea, postmenopausal bleeding, breast pain.
Carcinoma of the breast has been reported in patients taking spironolactone but a cause and effect relationship has not been established. Hematologic: Leukopenia (including agranulocytosis), thrombocytopenia. Hypersensitivity: Fever, urticaria, maculopapular or erythematous cutaneous eruptions, anaphylactic reactions, vasculitis.
Metabolism: Hyperkalemia, electrolyte disturbances (see Warnings and Precautions ). Musculoskeletal: Leg cramps. Nervous system /psychiatric: Lethargy, mental confusion, ataxia, dizziness, headache, drowsiness.
Liver / biliary: A very few cases of mixed cholestatic/hepatocellular toxicity, with one reported fatality, have been reported with spironolactone administration. Renal: Renal dysfunction (including renal failure). Skin: Stevens-Johnson Syndrome (SJS), toxic epidermal necrolysis (TEN), drug rash with eosinophilia and systemic symptoms (DRESS), alopecia, pruritis.
🔄 Drug Interactions ▾
Drug interactions: ACE inhibitors: Concomitant administration of ACE inhibitors with potassium-sparing diuretics has been associated with severe hyperkalemia. Angiotensin II antagonists, aldosterone blockers, heparin, low molecular weight heparin, and other drugs known to cause hyperkalemia: Concomitant administration may lead to severe hyperkalemia. Alcohol, barbiturates, or narcotics: Potentiation of orthostatic hypotension may occur.
Corticosteroids, ACTH: Intensified electrolyte depletion, particularly hypokalemia, may occur. Pressor amines (e.g., norepinephrine): Spironolactone reduces the vascular responsiveness to norepinephrine. Therefore, caution should be exercised in the management of patients subjected to regional or general anesthesia while they are being treated with spironolactone.
Skeletal muscle relaxants, nondepolarizing (e.g., tubocurarine): Possible increased responsiveness to the muscle relaxant may result. Lithium: Lithium generally should not be given with diuretics. Diuretic agents reduce the renal clearance of lithium and add a high risk of lithium toxicity.
Nonsteroidal anti-inflammatory drugs (NSAIDs): In some patients, the administration of an NSAID can reduce the diuretic, natriuretic, and antihypertensive effect of loop, potassium-sparing and thiazide diuretics. Combination of NSAIDs, e.g., indomethacin, with potassium-sparing diuretics has been associated with severe hyperkalemia. Therefore, when spironolactone and NSAIDs are used concomitantly, the patient should be observed closely to determine if the desired effect of the diuretic is obtained.
Digoxin: Spironolactone has been shown to increase the half-life of digoxin. This may result in increased serum digoxin levels and subsequent digitalis toxicity. It may be necessary to reduce the maintenance and digitalization doses when spironolactone is administered, and the patient should be carefully monitored to avoid over- or under- digitalization.
Cholestyramine: Hyperkalemic metabolic acidosis has been reported in patients given spironolactone concurrently with cholestyramine.
🔄 Drug / Laboratory Test Interactions ▾
Drug/Laboratory test interactions: Several reports of possible interference with digoxin radioimmunoassay by spironolactone, or its metabolites, have appeared in the literature. Neither the extent nor the potential clinical significance of its interference (which may be assay-specific) has been fully established.
🤰 Pregnancy ▾
Pregnancy: Teratogenic effects. Pregnancy Category C. Teratology studies with spironolactone have been carried out in mice and rabbits at doses of up to 20 mg/kg/day.
On a body surface area basis, this dose in the mouse is substantially below the maximum recommended human dose and, in the rabbit, approximates the maximum recommended human dose. No teratogenic or other embryotoxic effects were observed in mice, but the 20 mg/kg dose caused an increased rate of resorption and a lower number of live fetuses in rabbits. Because of its antiandrogenic activity and the requirement of testosterone for male morphogenesis, spironolactone may have the potential for adversely affecting sex differentiation of the male during embryogenesis.
When administered to rats at 200 mg/kg/day between gestation days 13 and 21 (late embryogenesis and fetal development), feminization of male fetuses was observed. Offspring exposed during late pregnancy to 50 and 100 mg/kg/day doses of spironolactone exhibited changes in the reproductive tract including dose-dependent decreases in weights of the ventral prostate and seminal vesicle in males, ovaries and uteri that were enlarged in females, and other indications of endocrine dysfunction, that persisted into adulthood.
There are no adequate and well-controlled studies with spironolactone in pregnant women. Spironolactone has known endocrine effects in animals including progestational and antiandrogenic effects. The antiandrogenic effects can result in apparent estrogenic side effects in humans, such as gynecomastia.
Therefore, the use of spironolactone in pregnant women requires that the anticipated benefit be weighed against the possible hazards to the fetus.
🧒 Pediatric Use ▾
Pediatric use: Safety and effectiveness in pediatric patients have not been established.
🆘 Overdosage ▾
OVERDOSAGE The oral LD 50 of spironolactone is greater than 1000 mg/kg in mice, rats, and rabbits. Acute overdosage of spironolactone may be manifested by drowsiness, mental confusion, maculopapular or erythematous rash, nausea, vomiting, dizziness, or diarrhea. Rarely, instances of hyponatremia, hyperkalemia, or hepatic coma may occur in patients with severe liver disease, but these are unlikely due to acute overdosage.
Hyperkalemia may occur, especially in patients with impaired renal function. Treatment: Induce vomiting or evacuate the stomach by lavage. There is no specific antidote.
Treatment is supportive to maintain hydration, electrolyte balance, and vital functions. Patients who have renal impairment may develop spironolactone-induced hyperkalemia. In such cases, spironolactone should be discontinued immediately.
With severe hyperkalemia, the clinical situation dictates the procedures to be employed. These may include the intravenous administration of calcium chloride solution, sodium bicarbonate solution and/or the oral or parenteral administration of glucose with a rapid-acting insulin preparation. These are temporary measures to be repeated as required.
Cationic exchange resins such as sodium polystyrene sulfonate may be orally or rectally administered. Persistent hyperkalemia may require dialysis.
🧬 Clinical Pharmacology ▾
ACTIONS / CLINICAL PHARMACOLOGY Mechanism of action: Spironolactone is a specific pharmacologic antagonist of aldosterone, acting primarily through competitive binding of receptors at the aldosterone-dependent sodium-potassium exchange site in the distal convoluted renal tubule. Spironolactone causes increased amounts of sodium and water to be excreted, while potassium is retained. Spironolactone acts both as a diuretic and as an antihypertensive drug by this mechanism.
It may be given alone or with other diuretic agents that act more proximally in the renal tubule. Aldosterone antagonist activity: Increased levels of the mineralocorticoid, aldosterone, are present in primary and secondary hyperaldosteronism. Edematous states in which secondary aldosteronism is usually involved include congestive heart failure, hepatic cirrhosis, and nephrotic syndrome.
By competing with aldosterone for receptor sites, spironolactone provides effective therapy for the edema and ascites in those conditions. Spironolactone counteracts secondary aldosteronism induced by the volume depletion and associated sodium loss caused by active diuretic therapy. Spironolactone is effective in lowering the systolic and diastolic blood pressure in patients with primary hyperaldosteronism.
It is also effective in most cases of essential hypertension, despite the fact that aldosterone secretion may be within normal limits in benign essential hypertension. Through its action in antagonizing the effect of aldosterone, spironolactone inhibits the exchange of sodium for potassium in the distal renal tubule and helps to prevent potassium loss. Spironolactone has not been demonstrated to elevate serum uric acid, to precipitate gout, or to alter carbohydrate metabolism.
Pharmacokinetics: Spironolactone is rapidly and extensively metabolized. Sulfur-containing products are the predominant metabolites and are thought to be primarily responsible, together with spironolactone, for the therapeutic effects of the drug. The following pharmacokinetic data were obtained from 12 healthy volunteers following the administration of 100 mg of spironolactone (film-coated tablets) daily for 15 days.
On the 15th day, spironolactone was given immediately after a low-fat breakfast and blood was drawn thereafter. Accumulation Factor: AUC (0–24 hr, day 15)/AUC (0–24 hr, day 1) Mean Peak Serum Concentration Mean (SD) Post Steady- State Half-Life 7-α-(thiomethyl) spirolactone (TMS) 1.25 391 ng/mL at 3.2 hr 13.8 hr (6.4) (terminal) 6-β-hydroxy-7-α-(thiomethyl) spirolactone (HTMS) 1.50 125 ng/mL at 5.1 hr 15.0 hr (4.0) (terminal) Canrenone (C) 1.41 181 ng/mL at 4.3 hr 16.5 hr (6.3) (terminal) Spironolactone 1.30 80 ng/mL at 2.6 hr Approximately 1.4 hr (0.5) (β half-life) The pharmacological activity of spironolactone metabolites in man is not known.
However, in the adrenalectomized rat the antimineralocorticoid activities of the metabolites C, TMS, and HTMS, relative to spironolactone were 1.10, 1.28, and 0.32, respectively. Relative to spironolactone, their binding affinities to the aldosterone receptors in rat kidney slices were 0.19, 0.86, and 0.06, respectively. In humans, the potencies of TMS and 7-α-thiospirolactone in reversing the effects of the synthetic mineralocorticoid, fludrocortisone, on urinary electrolyte composition were 0.33 and 0.26, respectively, relative to spironolactone.
However, since the serum concentrations of these steroids were not determined, their incomplete absorption and/or first-pass metabolism could not be ruled out as a reason for their reduced in vivo activities. Spironolactone and its metabolites are more than 90% bound to plasma proteins. The metabolites are excreted primarily in the urine and secondarily in bile.
The effect of food on spironolactone absorption (two 100 mg spironolactone tablets) was assessed in a single-dose study of 9 healthy, drug-free volunteers. Food increased the bioavailability of unmetabolized spironolactone by almost 100%. The cl…
🧬 Mechanism of Action ▾
Mechanism of action: Spironolactone is a specific pharmacologic antagonist of aldosterone, acting primarily through competitive binding of receptors at the aldosterone-dependent sodium-potassium exchange site in the distal convoluted renal tubule. Spironolactone causes increased amounts of sodium and water to be excreted, while potassium is retained. Spironolactone acts both as a diuretic and as an antihypertensive drug by this mechanism.
It may be given alone or with other diuretic agents that act more proximally in the renal tubule.
📦 How Supplied / Storage and Handling ▾
HOW SUPPLIED Spironolactone Tablets USP 25 mg tablets are Light yellow to yellow colored, round, biconvex, film coated tablets with inscription “AD” on one side and plain on the other side having faint odour of peppermint, supplied as: NDC Number Size 71205-146-30 bottle of 30 71205-146-60 bottle of 60 71205-146-90 bottle of 90 Spironolactone Tablets USP 50 mg tablets are Light orange to orange colored, oval, biconvex, film coated tablets with inscription “AE” on one side and breakline on the other side having faint odour of peppermint, supplied as: NDC Number Size 71205-147-30 bottle of 30 71205-147-60 bottle of 60 71205-147-90 bottle of 90 Spironolactone Tablets USP 100 mg tablets are Light peach to peach colored, round, biconvex, film coated tablets with inscription “AF” on one side and breakline on the other side having faint odour of peppermint, supplied as: NDC Number Size 71205-148-30 bottle of 30 71205-148-60 bottle of 60 71205-148-90 bottle of 90 Store at 20° to 25°C (68° to 77°F) [See USP Controlled Room Temperature] Protect from light.
Dispense in tight, Light-resistant containers. Manufactured For: Accord Healthcare, Inc., 1009 Slater Road, Suite 210-B, Durham, NC 27703, USA. Manufactured By: Intas Pharmaceuticals Limited, Plot No 5 to 12, Pharmez, Sarkhej-Bavla, National Highway No 8-A, Near Village Matoda, Tal Sanand, Ahmedabad - 382 213, Gujarat, India Repackaged By: Proficient Rx LP Thousand Oaks, CA 91320 51 2267 0 700753 Issued November 2016.
📋 Description ▾
DESCRIPTION Spironolactone tablets USP, for oral administration contain 25 mg, 50 mg, or 100 mg of the aldosterone antagonist spironolactone, 17-hydroxy-7α-mercapto-3-oxo-17α-pregn-4-ene-21-carboxylic acid γ-lactone acetate, which has the following structural formula: Spironolactone is practically insoluble in water, soluble in alcohol, and freely soluble in benzene and in chloroform. Inactive ingredients include lactose monohydrate, dibasic calcium phosphate, povidone, peppermint oil, purified talc, pregelatinised starch, colloidal anhydrous silica, magnesium stearate, hypromellose, polyethylene glycol 400, titanium dioxide and iron oxide yellow.
In addition, iron oxide red (50 mg and 100 mg tablets) is included in the film coating of specific strengths. Chemical Structure
💬 Information for Patients ▾
Information for patients: Patients who receive spironolactone should be advised to avoid potassium supplements and foods containing high levels of potassium, including salt substitutes.