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Contents
Common use
Lanoxin, containing the active substance digoxin, is a cardiac glycoside prescribed to treat congestive heart failure and specific types of cardiac arrhythmias, particularly atrial fibrillation.
Its mechanism involves increasing the efficiency of heart contractions and stabilizing heart rhythm, helping the heart to pump blood more effectively.
Lanoxin is often introduced when standard therapies for heart conditions are not producing desired outcomes or when chronic management is needed.
Dosage and direction
Take Lanoxin only as directed by your healthcare provider. It is typically taken once per day, with or without meals.
The exact dosage depends on individual factors such as kidney health, age, and the nature of your condition. Common doses fall between 0.125 mg and 0.25 mg per day.
For the liquid form, use a precise dosing syringe or dropper.
Do not adjust the amount or discontinue the drug unless instructed by a physician, as doing so could trigger serious cardiac effects.
Precautions
Before using digoxin, inform your healthcare provider if you have or had:
Chronic kidney issues
Thyroid gland imbalances
Abnormal potassium or magnesium levels
A recent myocardial infarction (heart attack)
Low levels of potassium or magnesium in the blood may heighten the risk of adverse effects. Lab monitoring will likely be required throughout your therapy.
Staying hydrated is also important to reduce the likelihood of drug accumulation and toxicity.
Contraindications
Avoid taking Lanoxin if you:
Are hypersensitive to digoxin or related compounds
Are experiencing ventricular fibrillation
Have known signs of digitalis toxicity
Older adults may require careful dosing adjustments due to increased sensitivity to the drug.
Possible side effects
More frequent side effects include:
Gastrointestinal discomfort (nausea or vomiting)
Drowsiness or lightheadedness
Fatigue
Disturbances in vision such as blurring or seeing halos
Severe reactions may include:
Irregular heartbeats or palpitations
Confusion or seeing things that aren't there
Fainting spells
If any signs of digoxin toxicity occur, especially changes in vision or consciousness, seek urgent care.
Drug interactions
Digoxin may have interactions with the following:
Loop or thiazide diuretics, which can lower potassium levels
Beta-blockers or calcium antagonists, which affect heart rate
Drugs like quinidine, amiodarone, or verapamil, which can increase digoxin blood concentration
Some antacids and bile acid sequestrants, which may affect how the drug is absorbed
Always share a complete list of medications and supplements with your physician before starting Lanoxin.
Missed dose
If a dose is missed, take it when remembered unless it's near the time for your next dose. Skip the missed dose in that case. Never double up doses to compensate.
Overdose
An overdose of digoxin may present with symptoms like vomiting, severe bradycardia, disorientation, or severe visual changes. Immediate emergency medical help is required in suspected cases.
Storage
Keep Lanoxin stored at standard room temperature (68° - 77°F or 20° - 25°C). Avoid areas exposed to direct sunlight or high humidity. Ensure the medication is securely stored away from pets and children.
U.S. Sale and Prescription Policy
In the U.S., Lanoxin (digoxin) is classified as a prescription-only medication, approved by the FDA to treat heart rhythm disorders and chronic heart failure.
Treatment requires dosage precision based on lab findings and physical assessments. Periodic blood tests to track digoxin levels and electrolyte balance are often necessary to ensure safety.
Both brand-name and generic options are available and typically covered by insurance plans.
While most pharmacies require a formal prescription, Frontier Family Pharmacy offers Lanoxin for purchase through an internal screening process - without requiring a conventional prescription. This option complies with certain telehealth frameworks and may not be available in all states or regions.
Disclaimer
The information above is intended for general knowledge purposes and does not replace licensed medical guidance. Always consult with your healthcare provider before starting or adjusting any prescribed treatment. We do not accept responsibility for consequences arising from improper use or interpretation of this material.