Digoxin 250 ug/mL Injection, Solution
🆔 Identity & classification
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🏷️ RxNorm drug class
This medicine belongs to the Cardiac Glycoside class.
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🏭 Manufacturer & labeler
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🩺 Clinical
- Digoxin is being used for one of two main reasons: either to help your heart pump more effectively in heart failure, or to slow down a fast heart rate caused by atrial fibrillation...
- Why did my doctor prescribe digoxin — what is it actually doing for me?
- The most important ones to call your doctor about are nausea, vomiting, loss of appetite, unusual vision changes (like seeing a yellow-green tint or halos around lights), dizziness...
- What side effects should I actually watch out for?
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Digoxin — tap one for details:
Digoxin may be associated with lower levels of 1 nutrient — worth a chat with your pharmacist, not a cause for alarm.
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Ask a licensed pharmacist directly — free, answered by our team.
🧪 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.
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UNII 3K9958V90M
A liquid solvent derived from fermentation or chemical synthesis. In medicines, alcohol dissolves active ingredients, helps preserve the product, and improves how the body absorbs certain drugs.
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UNII XF417D3PSL
Anhydrous citric acid is a sour, crystalline powder derived from citric acid with water removed. In medicines, it acts as a buffer to control pH, adds tartness to improve taste, and helps tablets disintegrate.
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UNII 6DC9Q167V3
Propylene glycol is a clear liquid derived from petroleum or vegetable sources. It acts as a solvent, humectant, and preservative in medicines, helping dissolve active ingredients and maintain product stability.
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UNII GR686LBA74
Sodium phosphate, dibasic is a salt derived from phosphoric acid. It acts as a buffer to help maintain the medicine's pH balance and may serve as a binder or filler in tablets and capsules.
4 inactive ingredients listed in the exact product block matched to this NDC.
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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
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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 mL | 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 · quarterly | No Part D plan price is available for this NDC in our data. | |
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🔁 Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Digoxin .25 mg/mL 00404-9850-02 | Henry | 1 ampule | — | AP | FDA listed | — |
| Digoxin .25 mg/mL 00641-1410-35 | Hikma | 25 ampules | — | AP | FDA listed | — |
| Digoxin .25 mg/mL 00641-6184-25 | Hikma | 25 ampules | — | AP | FDA listed | — |
| Digoxin 250 ug/mL 00781-3059-95 | Sandoz | 10 ampules | — | AP | FDA listed | — |
| Digoxin .25 mg/mL 51662-1217-01 | HF | 2 ml | — | AP | FDA listed | — |
| Digoxin .25 mg/mL 55154-5106-05 | Cardinal | 5 ampules | — | AP | FDA listed | — |
| Lanoxin 250 ug/mL 70515-0261-10 | Covis | 10 vials | — | AP | FDA listed | — |
| Digoxin 250 ug/mLthis 71872-7325-01 | Medical | 1 ampule | — | AP | FDA listed | — |
| Digoxin .25 mg/mL 84549-0410-35 | ProPharma | 2 ml | — | AP | 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)
🔬 Reported adverse events (FAERS)
Top reported reactions
Age at onset
Reporter sex
Serious outcomes
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📦 Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Status |
|---|---|---|---|
| 71872-7325-01 You're viewing this | 1 AMPULE in 1 BAG (71872-7325-1) / 2 mL in 1 AMPULE | 2024-05-29 | Active |
🧭 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. |
Questions about this listing
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📄 Full prescribing information FDA SPL
🎯 Indications and Usage ▾
1 INDICATIONS AND USAGE Digoxin injection is a cardiac glycoside indicated for: Treatment of mild to moderate heart failure in adults. ( 1.1 ) Increasing myocardial contractility in pediatric patients with heart failure. ( 1.2 ) Control of resting ventricular rate in adults with chronic atrial fibrillation. ( 1.3 )
1.1Heart Failure in Adults Digoxin injection is indicated for the treatment of mild to moderate heart failure in adults. Digoxin injection increases left ventricular ejection fraction and improves heart failure symptoms, as evidenced by improved exercise capacity and decreased heart failure-related hospitalizations and emergency care, while having no effect on mortality. Where possible, digoxin injection should be used in combination with a diuretic and an angiotensin-converting enzyme (ACE) inhibitor.
1.2Heart Failure in Pediatric Patients Digoxin injection increases myocardial contractility in pediatric patients with heart failure.
1.3Atrial Fibrillation in Adults Digoxin injection is indicated for the control of ventricular response rate in adult patients with chronic atrial fibrillation.
⏱️ Dosage and Administration ▾
2 DOSAGE AND ADMINISTRATION Digoxin injection dose is based on patient-specific factors (age, lean body weight, renal function, etc.). See full prescribing information. Monitor for toxicity and therapeutic effect. ( 2 ) Intravenous administration is preferable to intramuscular. Avoid bolus administration. ( 2 )
2.1Important Dosing and Administration Information In selecting a digoxin injection dosing regimen, it is important to consider factors that affect digoxin blood levels (e.g., body weight, age, renal function, concomitant drugs) since toxic levels of digoxin are only slightly higher than therapeutic levels. Dosing can be either initiated with a loading dose followed by maintenance dosing if rapid titration is desired or initiated with maintenance dosing without a loading dose. Parenteral administration of digoxin should be used only when the need for rapid digitalization is urgent or when the drug cannot be taken orally.
Intramuscular injection can lead to severe pain at the injection site, thus intravenous administration is preferred. If the drug must be administered by the intramuscular route, it should be injected deep into the muscle followed by massage. For adults, no more than 500 mcg of digoxin injection should be injected into a single site.
For pediatric patients, no more than 200 mcg of digoxin injection should be injected into a single site. Administer the dose over a period of 5 minutes or longer and avoid bolus administration to prevent systemic and coronary vasoconstriction. Mixing of digoxin injection with other drugs in the same container or simultaneous administration in the same intravenous line is not recommended.
Digoxin injection can be administered undiluted or diluted with a 4-fold or greater volume of Sterile Water for Injection, 0.9% Sodium Chloride Injection, or 5% Dextrose Injection. The use of less than a 4-fold volume of diluent could lead to precipitation of the digoxin. Immediate use of the diluted product is recommended.
Consider interruption or reduction in digoxin injection dose prior to electrical cardioversion [see Warnings and Precautions ( 5.4 )]. Discard unused portion of digoxin injection.
2.2Loading Dosing Regimen in Adults and Pediatric Patients Table 1. Recommended Digoxin Injection Loading Dose Age Total IV Loading Dose (mcg/kg) Administer half the total loading dose initially, then ¼ the loading dose every 6 to 8 hours twice mcg = microgram Premature 15-25 Full-Term 20-30 1-24 Months 30-50 2-5 Years 25-35 5-10 Years 15-30 Adults and pediatric patients over 10 years 8-12
2.3Maintenance Dosing in Adults and Pediatric Patients Over 10 Years Old The maintenance dose is based on lean body weight, renal function, age, and concomitant products [see Clinical Pharmacology ( 12.3 )] . The recommended starting maintenance doses in adults and pediatric patients over 10 years old with normal renal function are given in Table 2 . Doses may be increased every 2 weeks according to clinical response, serum drug levels, and toxicity.
Table 2. Recommended Starting Digoxin Injection Maintenance Dosage in Adults and Pediatric Patients Over 10 Years Old mcg = microgram Age Total Intravenous Maintenance Dose, mcg/kg/day (given once daily) Adults and pediatric patients over 10 years 2.4-3.6 Table 3 provides the recommended (once daily) maintenance dose for adults and pediatric patients over 10 years old (to be given once daily) according to lean body weight and renal function. The doses are based on studies in adult patients with heart failure.
Alternatively, the maintenance dose may be estimated by the following formula (peak body stores lost each day through elimination): Total Maintenance Dose = Loading Dose (i.e., Peak Body Stores) x % Daily Loss/100 (% Daily Loss = 14 + Creatinine clearance/5) Reduce the dose of digoxin injection in patients whose lean weight is an abnormally small fraction of their total body mass because of obesity or edema. Table 3. Recommended Maintenance Dose (in microg…
💊 Dosage Forms and Strengths ▾
3 DOSAGE FORMS AND STRENGTHS Digoxin injection, USP: Ampules of 500 mcg (0.5 mg) in 2 mL (250 mcg [0.25 mg] per 1 mL). Digoxin injection USP: Ampules containing 500 mcg (0.5 mg) in 2 mL. ( 3 )
⛔ Contraindications ▾
4 CONTRAINDICATIONS Digoxin injection is contraindicated in patients with: Ventricular fibrillation [see Warnings and Precautions ( 5.1 )] Known hypersensitivity to digoxin (reactions seen include unexplained rash, swelling of the mouth, lips or throat or a difficulty in breathing). A hypersensitivity reaction to other digitalis preparations usually constitutes a contraindication to digoxin. Ventricular fibrillation.
( 4 ) Known hypersensitivity to digoxin or other forms of digitalis. ( 4 )
⚠️ Warnings and Cautions ▾
5 WARNINGS AND PRECAUTIONS Risk of rapid ventricular response leading to ventricular fibrillation in patients with AV accessory pathway. ( 5.1 ) Risk of advanced or complete heart block in patients with sinus node disease and AV block. ( 5.2 ) Digoxin toxicity: Indicated by nausea, vomiting, visual disturbances, and cardiac arrhythmias.
Advanced age, low body weight, impaired renal function and electrolyte abnormalities predispose to toxicity. ( 5.3 ) Risk of ventricular arrhythmias during electrical cardioversion. ( 5.4 ) Not recommended in patients with acute myocardial infarction ( 5.5 ) Avoid digoxin injection in patients with myocarditis.
( 5.6 )
5.1Ventricular Fibrillation in Patients with Accessory AV Pathway (Wolff-Parkinson-White Syndrome) Patients with Wolff-Parkinson-White syndrome who develop atrial fibrillation are at high risk of ventricular fibrillation. Treatment of these patients with digoxin leads to greater slowing of conduction in the atrioventricular node than in accessory pathways, and the risks of rapid ventricular response leading to ventricular fibrillation are thereby increased.
5.2Sinus Bradycardia and Sino-atrial Block Digoxin injection may cause severe sinus bradycardia or sinoatrial block particularly in patients with pre-existing sinus node disease and may cause advanced or complete heart block in patients with pre-existing incomplete AV block. Consider insertion of a pacemaker before treatment with digoxin.
5.3Digoxin Toxicity Signs and symptoms of digoxin toxicity include anorexia, nausea, vomiting, visual changes and cardiac arrhythmias [first-degree, second-degree (Wenckebach), or third-degree heart block (including asystole); atrial tachycardia with block; AV dissociation; accelerated junctional (nodal) rhythm; unifocal or multiform ventricular premature contractions (especially bigeminy or trigeminy); ventricular tachycardia; and ventricular fibrillation]. Toxicity is usually associated with digoxin levels greater than 2 ng/mL although symptoms may also occur at lower levels.
Low body weight, advanced age or impaired renal function, hypokalemia, hypercalcemia, or hypomagnesemia may predispose to digoxin toxicity. Obtain serum digoxin levels in patients with signs or symptoms of digoxin therapy and interrupt or adjust dose if necessary [see Adverse Reactions ( 6 ) and Overdosage ( 10 )]. Assess serum electrolytes and renal function periodically.
The earliest and most frequent manifestation of digoxin toxicity in infants and children is the appearance of cardiac arrhythmias, including sinus bradycardia. In children, the use of digoxin may produce any arrhythmia. The most common are conduction disturbances or supraventricular tachyarrhythmias, such as atrial tachycardia (with or without block) and junctional (nodal) tachycardia.
Ventricular arrhythmias are less common. Sinus bradycardia may be a sign of impending digoxin intoxication, especially in infants, even in the absence of first-degree heart block. Any arrhythmias or alteration in cardiac conduction that develops in a child taking digoxin should initially be assumed to be a consequence of digoxin intoxication.
Given that adult patients with heart failure have some symptoms in common with digoxin toxicity, it may be difficult to distinguish digoxin toxicity from heart failure. Misidentification of their etiology might lead the clinician to continue or increase digoxin dosing, when dosing should actually be suspended. When the etiology of these signs and symptoms is not clear, measure serum digoxin levels.
5.4Risk of Ventricular Arrhythmias during Electrical Cardioversion It may be desirable to reduce the dose of or discontinue digoxin for 1 to 2 days prior to electrical cardioversion of atrial fibrillation to avoid the induction of ventricular arrhythmias, but physicians must consider the consequences of increasing the ventricular response if digoxin is decreased or withdrawn. If digitalis toxicity is suspected, elective cardioversio…
🤒 Adverse Reactions ▾
6 ADVERSE REACTIONS The following adverse reactions are included in more detail in the Warnings and Precautions section of the label: Cardiac arrhythmias [see Warnings and Precautions ( 5.1 , 5.2 )] Digoxin Toxicity [see Warnings and Precautions ( 5.3 )] The overall incidence of adverse reactions with digoxin has been reported as 5 to 20%, with 15 to 20% of adverse events considered serious. Cardiac toxicity accounts for about one-half, gastrointestinal disturbances for about one-fourth, and CNS and other toxicity for about one-fourth of these adverse events.
( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Sandoz Inc. at 1-800-525-8747 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 clinical practice. In general, the adverse reactions of digoxin are dose-dependent and occur at doses higher than those needed to achieve a therapeutic effect. Hence, adverse reactions are less common when digoxin is used within the recommended dose range, is maintained within the therapeutic serum concentration range, and when there is careful attention to concurrent medications and conditions.
In the DIG trial (a trial investigating the effect of digoxin on mortality and morbidity in patients with heart failure), the incidence of hospitalization for suspected digoxin toxicity was 2% in patients taking digoxin compared to 0.9% in patients taking placebo [see Clinical Studies ( 14.1 )] . The overall incidence of adverse reactions with digoxin has been reported as 5 to 20%, with 15 to 20% of adverse events considered serious. Cardiac toxicity accounts for about one-half, gastrointestinal disturbances for about one-fourth, and CNS and other toxicity for about one-fourth of these adverse events.
Gastrointestinal: In addition to nausea and vomiting, the use of digoxin has been associated with abdominal pain, intestinal ischemia, and hemorrhagic necrosis of the intestines. CNS: Digoxin can cause headache, weakness, dizziness, apathy, confusion, and mental disturbances (such as anxiety, depression, delirium, and hallucination). Other: Gynecomastia has been occasionally observed following the prolonged use of digoxin.
Thrombocytopenia and maculopapular rash and other skin reactions have been rarely observed.
🔄 Drug Interactions ▾
7 DRUG INTERACTIONS Digoxin has a narrow therapeutic index, increased monitoring of serum digoxin concentrations and for potential signs and symptoms of clinical toxicity is necessary when initiating, adjusting, or discontinuing drugs that may interact with digoxin. Prescribers should consult the prescribing information of any drug which is co-prescribed with digoxin for potential drug interaction information. PGP Inducers/Inhibitors: Drugs that induce or inhibit PGP have the potential to alter digoxin pharmacokinetics.
( 7.1 ) The potential for drug-drug interactions must be considered prior to and during drug therapy. See full prescribing information. ( 7.2 , 7.3 , 12.3 )
7.1P-Glycoprotein (PGP) Inducers/Inhibitors Digoxin is a substrate of P-glycoprotein, at the level of intestinal absorption, renal tubular section and biliary-intestinal secretion. Therefore, drugs that induce/inhibit P-glycoprotein have the potential to alter digoxin pharmacokinetics.
7.2Pharmacokinetic Drug Interactions Pharmacokinetic interactions have been observed and reported primarily when digoxin is co-administered by oral route. There are very few studies that have evaluated the drug interaction when digoxin is administered via IV route. The magnitude of digoxin exposure change through IV route is generally lower than that through oral route.
Table below provides available interaction data using digoxin IV formulation (NA means not available). Digoxin concentrations increased greater than 50% Digoxin Serum Concentration Increase Digoxin AUC Increase Recommendations Quinidine NA 54-83% Measure serum digoxin concentrations before initiating concomitant drugs. Reduce digoxin concentrations by decreasing dose by approximately 30 to 50% or by modifying the dosing frequency and continue monitoring.
Ritonavir NA 86% Digoxin concentrations increased less than 50% Amiodarone 17% 40% Measure serum digoxin concentrations before initiating concomitant drugs. Reduce digoxin concentrations by decreasing the dose by approximately 15 to 30% or by modifying the dosing frequency and continue monitoring. Propafenone 28% 29% Quinine NA 34-38% Spironolactone NA 44% Verapamil NA 24% Mirabegron 29% 27%
7.3Potentially Significant Pharmacodynamic Drug Interactions Because of considerable variability of pharmacodynamic interactions, the dosage of digoxin should be individualized when patients receive these medications concurrently. Drugs that Affect Renal Function A decline in GFR or tubular secretion, as from ACE inhibitors, angiotensin receptor blockers, nonsteroidal anti-inflammatory drugs [NSAIDs], COX-2 inhibitors may impair the excretion of digoxin. Antiarrthymics Dofetilide Concomitant administration with digoxin was associated with a higher rate of torsades de pointes.
Sotalol Proarrhythmic events were more common in patients receiving sotalol and digoxin than on either alone; it is not clear whether this represents an interaction or is related to the presence of CHF, a known risk factor for proarrhythmia, in patients receiving digoxin. Dronedarone Sudden death was more common in patients receiving digoxin with dronedarone than on either alone; it is not clear whether this represents an interaction or is related to the presence of advanced heart disease, a known risk factor for sudden death in patients receiving digoxin.
Parathyroid Hormone Analog Teriparatide Sporadic case reports have suggested that hypercalcemia may predispose patients to digitalis toxicity. Teriparatide transiently increases serum calcium. Thyroid supplement Thyroid Treatment of hypothyroidism in patients taking digoxin may increase the dose requirements of digoxin.
Sympathomimetics Epinephrine Norepinephrine Dopamine Can increase the risk of cardiac arrhythmias. Neuromuscular Blocking Agents Succinylcholine May cause sudden extrusion of potassium from muscle cells, causing arrhythmias in patients taking digoxin. Supplements Calcium If administered rapidly by intravenous route, can produce se…
🔄 Drug / Laboratory Test Interactions ▾
7.4Drug/Laboratory Test Interactions Endogenous substances of unknown composition (digoxin-like immunoreactive substances [DLIS]) can interfere with standard radioimmunoassays for digoxin. The interference most often causes results to be falsely positive or falsely elevated, but sometimes it causes results to be falsely reduced. Some assays are more subject to these failings than others.
Several LC/MS/MS methods are available that may provide less susceptibility to DLIS interference. DLIS are present in up to half of all neonates and in varying percentages of pregnant women, patients with hypertrophic cardiomyopathy, patients with renal or hepatic dysfunction, and other patients who are volume-expanded for any reason. The measured levels of DLIS (as digoxin equivalents) are usually low (0.2 to 0.4 ng/mL), but sometimes they reach levels that would be considered therapeutic or even toxic.
In some assays, spironolactone, canrenone, and potassium canrenoate may be falsely detected as digoxin, at levels up to 0.5 ng/mL. Some traditional Chinese and Ayurvedic medicine substances like Chan Su, Siberian Ginseng, Asian Ginseng, Ashwagandha, or Danshen can cause similar interference. Spironolactone and DLIS are much more extensively protein-bound than digoxin.
As a result, assays of free digoxin levels in protein-free ultrafiltrate (which tend to be about 25% less than total levels, consistent with the usual extent of protein binding) are less affected by spironolactone or DLIS. It should be noted that ultrafiltration does not solve all interference problems with alternative medicines. The use of an LC/MS/MS method may be the better option according to the good results it provides, especially in terms of specificity and limit of quantization.
👥 Use in Specific Populations ▾
8 USE IN SPECIFIC POPULATIONS Pediatric patients: Newborn infants display variability in tolerance to digoxin. ( 8.4 ) Geriatric patients: Consider renal function in dosage selection, and carefully monitor for side effects. ( 8.5 ) Renal impairment: Digoxin is excreted by the kidneys. Consider renal function during dosage selection. ( 8.6 )
8.1Pregnancy Risk Summary Experience with digoxin in pregnant women over several decades, based on published retrospective clinical studies and case reports, has not led to the identification of a drug associated risk of major birth defects, miscarriage or adverse maternal and fetal outcomes. Untreated underlying maternal conditions, such as heart failure and atrial fibrillation, during pregnancy pose a risk to the mother and fetus (see Clinical Consideration). Animal reproduction studies have not been conducted with digoxin.
The estimated background risk of major birth defects and miscarriage for the indicated population(s) are 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 2-4% and 15-20%, respectively.
Clinical Considerations Disease-associated maternal and/or embryo/fetal risk Pregnant women with heart failure are at increased risk for preterm birth. Clinical classification of heart disease may worsen with pregnancy and lead to maternal or fetal death. Pregnant women with atrial fibrillation are at an increased risk of delivering a low birth weight infant.
Atrial fibrillation may worsen with pregnancy and can lead to maternal or fetal death. Fetal/neonatal adverse reactions Digoxin has been shown to cross the placenta and is found in amniotic fluid. Monitor neonates for signs and symptoms of digoxin toxicity, including vomiting, and cardiac arrhythmias [see Warnings and Precautions ( 5.3 )].
Dose adjustments during pregnancy and the postpartum period Digoxin requirements may increase during pregnancy and decrease in the postpartum period. Monitor serum digoxin levels during pregnancy and the postpartum period [see Dosage and Administration ( 2.5 )]. Labor or Delivery Risk of arrhythmias may increase during the labor and delivery.
Monitor patients continuously during labor and delivery [see Warnings and Precautions ( 5.1 and 5.2 )].
8.2Lactation Risk Summary The digoxin dose received through breastfeeding is up to 4% of the neonatal maintenance dosage, which is unlikely to be clinically relevant. There are no data on the effects of digoxin on the breastfed infant or the effects on milk production. Data Based on data from two lactation studies in a total of 13 breastfed infants, the digoxin concentrations in breast milk were between 0.4 – 1.0 ng/mL following 0.25 mg once daily dose of digoxin in the lactating mother.
Thus, the amount of digoxin ingested daily by the infants is estimated to be between 0.03 to 0.16 μg/kg/day. This translates to a relative infant dose of digoxin between 1 to 7% of the maternal weight-adjusted dose and about 0.2 to 4% of the neonatal maintenance dose.
8.4Pediatric Use The safety and effectiveness of digoxin in the control of ventricular rate in children with atrial fibrillation have not been established. The safety and effectiveness of digoxin in the treatment of heart failure in children have not been established in adequate and well-controlled studies. However, in published literature of children with heart failure of various etiologies (e.g., ventricular septal defects, anthracycline toxicity, patent ductus arteriosus), treatment with digoxin has been associated with improvements in hemodynamic parameters and in clinical signs and symptoms.
Newborn infants display considerable variability in their tolerance to digoxin. Premature and immature infants are particularly sensitive to the effects of digoxin, and the dosage of the drug must not only be reduced but must be…
🤰 Pregnancy ▾
8.1Pregnancy Risk Summary Experience with digoxin in pregnant women over several decades, based on published retrospective clinical studies and case reports, has not led to the identification of a drug associated risk of major birth defects, miscarriage or adverse maternal and fetal outcomes. Untreated underlying maternal conditions, such as heart failure and atrial fibrillation, during pregnancy pose a risk to the mother and fetus (see Clinical Consideration). Animal reproduction studies have not been conducted with digoxin.
The estimated background risk of major birth defects and miscarriage for the indicated population(s) are 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 2-4% and 15-20%, respectively.
Clinical Considerations Disease-associated maternal and/or embryo/fetal risk Pregnant women with heart failure are at increased risk for preterm birth. Clinical classification of heart disease may worsen with pregnancy and lead to maternal or fetal death. Pregnant women with atrial fibrillation are at an increased risk of delivering a low birth weight infant.
Atrial fibrillation may worsen with pregnancy and can lead to maternal or fetal death. Fetal/neonatal adverse reactions Digoxin has been shown to cross the placenta and is found in amniotic fluid. Monitor neonates for signs and symptoms of digoxin toxicity, including vomiting, and cardiac arrhythmias [see Warnings and Precautions ( 5.3 )].
Dose adjustments during pregnancy and the postpartum period Digoxin requirements may increase during pregnancy and decrease in the postpartum period. Monitor serum digoxin levels during pregnancy and the postpartum period [see Dosage and Administration ( 2.5 )]. Labor or Delivery Risk of arrhythmias may increase during the labor and delivery.
Monitor patients continuously during labor and delivery [see Warnings and Precautions ( 5.1 and 5.2 )].
🧒 Pediatric Use ▾
8.4Pediatric Use The safety and effectiveness of digoxin in the control of ventricular rate in children with atrial fibrillation have not been established. The safety and effectiveness of digoxin in the treatment of heart failure in children have not been established in adequate and well-controlled studies. However, in published literature of children with heart failure of various etiologies (e.g., ventricular septal defects, anthracycline toxicity, patent ductus arteriosus), treatment with digoxin has been associated with improvements in hemodynamic parameters and in clinical signs and symptoms.
Newborn infants display considerable variability in their tolerance to digoxin. Premature and immature infants are particularly sensitive to the effects of digoxin, and the dosage of the drug must not only be reduced but must be individualized according to their degree of maturity.
🧓 Geriatric Use ▾
8.5Geriatric Use The majority of clinical experience gained with digoxin has been in the elderly population. This experience has not identified differences in response or adverse effects between the elderly and younger patients. However, 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, which should be based on renal function, and it may be useful to monitor renal function [see Dosage and Administration ( 2.1 )] .
🆘 Overdosage ▾
10 OVERDOSAGE
10.1Signs and Symptoms in Adults and Children The signs and symptoms of toxicity are generally similar to those previously described [see Adverse Reactions ( 6.1 )] but may be more frequent and can be more severe. Signs and symptoms of digoxin toxicity become more frequent with levels above 2 ng/mL. However, in deciding whether a patient’s symptoms are due to digoxin, the clinical state together with serum electrolyte levels and thyroid function are important factors [see Dosage and Administration ( 2 )] .
Adults The most common signs and symptoms of digoxin toxicity are nausea, vomiting, anorexia, and fatigue that occur in 30 to 70% of patients who are overdosed. Extremely high serum concentrations produce hyperkalemia especially in patients with impaired renal function. Almost every type of cardiac arrhythmia has been associated with digoxin overdose and multiple rhythm disturbances in the same patient are common.
Peak cardiac effects occur 3 to 6 hours following ingestion and may persist for 24 hours or longer. Arrhythmias that are considered more characteristic of digoxin toxicity are new-onset Mobitz type 1 A-V block, accelerated junctional rhythms, non-paroxysmal atrial tachycardia with A-V block, and bi-directional ventricular tachycardia. Cardiac arrest from asystole or ventricular fibrillation is usually fatal.
Digoxin toxicity is related to serum concentration. As digoxin serum levels increase above 1.2 ng/mL, there is a potential for increase in adverse reactions. Furthermore, lower potassium levels increases the risk for adverse reactions.
In adults with heart disease, clinical observations suggest that an overdose of digoxin of 10 to 15 mg results in death of half of patients. A dose above 25 mg ingested by an adult without heart disease appeared to be uniformly fatal if no Digoxin Immune Fab (DIGIBIND®, DIGIFAB®) was administered. Among the extra-cardiac manifestations, gastrointestinal symptoms (e.g., nausea, vomiting, anorexia) are very common (up to 80% incidence) and precede cardiac manifestations in approximately half of the patients in most literature reports.
Neurologic manifestations (e.g., dizziness, various CNS disturbances), fatigue, and malaise are very common. Visual manifestations may also occur with aberration in color vision (predominance of yellow green) the most frequent. Neurological and visual symptoms may persist after other signs of toxicity have resolved.
In chronic toxicity, nonspecific extra-cardiac symptoms, such as malaise and weakness, may predominate. Children In pediatric patients, signs and symptoms of toxicity can occur during or shortly after the dose of digoxin. Frequent non-cardiac effects are similar to those observed in adults although nausea and vomiting are not seen frequently in infants and small pediatric patients.
Other reported manifestations of overdose are weight loss in older age groups, failure to thrive in infants, abdominal pain caused by mesenteric artery ischemia, drowsiness, and behavioral disturbances including psychotic episodes. Arrhythmias and combinations of arrhythmias that occur in adult patients can also occur in pediatric patients although sinus tachycardia, supraventricular tachycardia, and rapid atrial fibrillation are seen less frequently in pediatric patients. Pediatric patients are more likely to develop A-V conduction disturbances, or sinus bradycardia.
Any arrhythmia in a child treated with digoxin should be considered related to digoxin until otherwise ruled out. In pediatric patients aged 1 to 3 years without heart disease, clinical observations suggest that an overdose of digoxin of 6 to 10 mg would result in death of half of the patients. In the same population, a dose above 10 mg resulted in death if no Digoxin Immune Fab were administered.
10.2Treatment Chronic Overdose If there is suspicion of toxicity, discontinue digoxin and place the patient on a cardiac monitor. Correct factors such as electrolyte abnormalities, thyroid…
🧬 Clinical Pharmacology ▾
12 CLINICAL PHARMACOLOGY
12.1Mechanism of Action All of digoxin’s actions are mediated through its effects on Na-K ATPase. This enzyme, the “sodium pump,” is responsible for maintaining the intracellular milieu throughout the body by moving sodium ions out of and potassium ions into cells. By inhibiting Na-K ATPase, digoxin causes increased availability of intracellular calcium in the myocardium and conduction system, with consequent increased inotropy, increased automaticity, and reduced conduction velocity indirectly causes parasympathetic stimulation of the autonomic nervous system, with consequent effects on the sino-atrial (SA) and atrioventricular (AV) nodes reduces catecholamine reuptake at nerve terminals, rendering blood vessels more sensitive to endogenous or exogenous catecholamines increases baroreceptor sensitization, with consequent increased carotid sinus nerve activity and enhanced sympathetic withdrawal for any given increment in mean arterial pressure increases (at higher concentrations) sympathetic outflow from the central nervous system (CNS) to both cardiac and peripheral sympathetic nerves allows (at higher concentrations) progressive efflux of intracellular potassium, with consequent increase in serum potassium levels.
The cardiologic consequences of these direct and indirect effects are an increase in the force and velocity of myocardial systolic contraction (positive inotropic action), a slowing of the heart rate (negative chronotropic effect), decreased conduction velocity through the AV node, and a decrease in the degree of activation of the sympathetic nervous system and renin-angiotensin system (neurohormonal deactivating effect).
12.2Pharmacodynamics The times to onset of pharmacologic effect and to peak effect of preparations of digoxin are shown in Table 7 . Table 7. Times to Onset of Pharmacologic Effect and to Peak Effect of Preparations of Digoxin Product Time to Onset of Effect Documented for ventricular response rate in atrial fibrillation, inotropic effects and electrocardiographic changes.
Time to Peak Effect Digoxin Tablets 0.5 to 2 hours 2 to 6 hours Digoxin Injection/IV 5 to 30 minutes Depending upon rate of infusion. 1 to 4 hours Hemodynamic Effects Short- and long-term therapy with the drug increases cardiac output and lowers pulmonary artery pressure, pulmonary capillary wedge pressure, and systemic vascular resistance in patients with heart failure. These hemodynamic effects are accompanied by an increase in the left ventricular ejection fraction and a decrease in end-systolic and end-diastolic dimensions.
ECG Changes The use of therapeutic doses of digoxin may cause prolongation of the PR interval and depression of the ST segment on the electrocardiogram. Digoxin may produce false positive ST-T changes on the electrocardiogram during exercise testing. These electrophysiologic effects are not indicative of toxicity.
Digoxin does not significantly reduce heart rate during exercise.
12.3Pharmacokinetics Note: The following data are from studies performed in adults, unless otherwise stated. Comparisons of the systemic availability and equivalent doses for oral preparations of digoxin are shown in Table 6 [see Dosage and Administration ( 2.6 )] . Distribution Following drug administration, a 6 to 8 hour tissue distribution phase is observed.
This is followed by a much more gradual decline in the serum concentration of the drug, which is dependent on the elimination of digoxin from the body. The peak height and slope of the early portion (absorption/distribution phases) of the serum concentration-time curve are dependent upon the route of administration and the absorption characteristics of the formulation. Clinical evidence indicates that the early high serum concentrations do not reflect the concentration of digoxin at its site of action, but that with chronic use, the steady-state post-distribution serum concentrations are in equilibrium with tissue concentrations and correlate wi…
🧬 Mechanism of Action ▾
12.1Mechanism of Action All of digoxin’s actions are mediated through its effects on Na-K ATPase. This enzyme, the “sodium pump,” is responsible for maintaining the intracellular milieu throughout the body by moving sodium ions out of and potassium ions into cells. By inhibiting Na-K ATPase, digoxin causes increased availability of intracellular calcium in the myocardium and conduction system, with consequent increased inotropy, increased automaticity, and reduced conduction velocity indirectly causes parasympathetic stimulation of the autonomic nervous system, with consequent effects on the sino-atrial (SA) and atrioventricular (AV) nodes reduces catecholamine reuptake at nerve terminals, rendering blood vessels more sensitive to endogenous or exogenous catecholamines increases baroreceptor sensitization, with consequent increased carotid sinus nerve activity and enhanced sympathetic withdrawal for any given increment in mean arterial pressure increases (at higher concentrations) sympathetic outflow from the central nervous system (CNS) to both cardiac and peripheral sympathetic nerves allows (at higher concentrations) progressive efflux of intracellular potassium, with consequent increase in serum potassium levels.
The cardiologic consequences of these direct and indirect effects are an increase in the force and velocity of myocardial systolic contraction (positive inotropic action), a slowing of the heart rate (negative chronotropic effect), decreased conduction velocity through the AV node, and a decrease in the degree of activation of the sympathetic nervous system and renin-angiotensin system (neurohormonal deactivating effect).
📦 How Supplied / Storage and Handling ▾
16 HOW SUPPLIED/STORAGE AND HANDLING Digoxin Injection, USP 500 mcg (0.5 mg) in 2 mL (250 mcg [0.25 mg] per mL) is available as follows: NDC 0781-3059-95 ampules of 2 mL in boxes of 10 Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature]. Protect from light. Discard unused portion.
📋 Description ▾
11 DESCRIPTION Digoxin is one of the cardiac (or digitalis) glycosides, a closely related group of drugs having in common specific effects on the myocardium. These drugs are found in a number of plants. Digoxin is extracted from the leaves of Digitalis lanata .
The term “digitalis” is used to designate the whole group of glycosides. The glycosides are composed of 2 portions: a sugar and a cardenolide (hence “glycosides”). Digoxin is described chemically as (3β,5β,12β)-3-[( O -2,6-dideoxy-β- D-ribo -hexopyranosyl-(1→4)- O -2,6-dideoxy-β- D-ribo -hexopyranosyl-(1→4)-2,6-dideoxy-β- D-ribo -hexopyranosyl)oxy]-12,14-dihydroxy-card-20(22)-enolide.
Its molecular formula is C 41 H 64 O 14 , its molecular weight is 780.95, and its structural formula is: Digoxin exists as clear to white odorless crystals or white, odorless crystalline powder that melts with decomposition above 230°C. The drug is practically insoluble in water and in ether; slightly soluble in diluted (50%) alcohol and in chloroform; and freely soluble in pyridine. Digoxin injection, USP is a sterile solution of digoxin for intravenous or intramuscular injection.
Each mL contains: digoxin 0.25 mg, propylene glycol 40% (v/v), anhydrous ethanol 10% (v/v), dibasic sodium phosphate 0.3% (w/v) and anhydrous citric acid 0.08% (w/v) to adjust pH between 6.8 and 7.2, and water for injection. Dilution is not required. digoxin-chemical-structure
💬 Information for Patients ▾
17 PATIENT COUNSELING INFORMATION Advise patients to contact their doctor or a health care professional if they experience nausea, vomiting, persistent diarrhea, confusion, weakness, or visual disturbances (including blurred vision, green-yellow color disturbances, halo effect) as these could be signs that the dose of digoxin may be too high. Advise parents or caregivers that the symptoms of having too high digoxin doses may be difficult to recognize in infants and pediatric patients. Symptoms such as weight loss, failure to thrive in infants, abdominal pain, and behavioral disturbances may be indications of digoxin toxicity.
Instruct the patient to monitor and record their heart rate and blood pressure daily. Distributed by Sandoz Inc., Princeton, NJ 08540