Lanoxin is a medication that is derived from a foxglove plant called Digitalis. It can be used for various heart conditions and is also approved by FDA for this purpose. Being discovered by the physician William Withering, it is now listed as one of the essential medications in the basic health care system

Medical Uses

Lanoxin is used to treat patients with heart failure in making their heart beat stronger. It is also used for heart disorders related to upper chambers of the heart that allow blood to enter into the heart. This condition is medically termed as atrial fibrillation. The drug must not be used for disorders related to the lower chambers of heart that makes the blood flow out of the heart (ventricular fibrillation).

Dosage and Administration

Lanoxin is available in the dosage strengths of 250 mcg/ml, 50 mcg/ml, 100 mcg/ml, 125 mcg, 250 mcg, 500 mcg, 50 mcg, 100 mcg, 200 mcg, 62.5 mcg, 187.5 mcg. The dosage however differs and depends upon various factors like the patient’s age, medical illness and response to the medication.

The medication must only be used according to the specifications given by doctor. It must be used at the same time every day. The dosage regimen of Lanoxin is only given after evaluating all the factors that can affect the levels of digoxin in blood. These factors include renal function, age, body type and weight. Because when the level of this medication in the blood slightly increases, then the medicinal value will be lost and it becomes toxic instead. Hence, it is very crucial to take the exact dosage of Lanoxin.

Usually the dose is commenced with a lower strength and gradually titrated to a maintenance dose upon checking the body’s reaction. All this must be done under the supervision of a medical professional.

Side Effects

Severe side effects arising from the use of Lanoxin which demand immediate medical attention are:

  • Changes in vision – Blurred vision
  • Uneven heart beat
  • Bloody stools
  • Hallucinations
  • Unusual Behavior

Common side effects include:

  • Dizziness
  • Appearance of rashes on the skin
  • Diarrhea
  • Anxiety
  • Enlargement of breasts

Precautionary advice

Certain prescription and OTC drugs are known to have an ill effect in the body by reacting with Lanoxin. Hence the names of all the top medications that interact with this drug should be well remembered while taking this drug. For instance, some antibiotics might cause removal of digoxin from the body hence these medications must be administered with care.

Women who are pregnant or planning to get pregnant should take Lanoxin only after consulting a doctor. Even the breastfeeding women should use this medication only upon the physician’s approval.

Use Lanoxin only with the consent of a doctor as certain medications like water pills can easily affect the minerals in the body that in turn can affect the reaction of the medication.

You should not overly exert yourself when you are exercising or when you are exposed to sunlight.

Make sure you always stay hydrated when taking Lanoxin.

Inform your doctor if you have had a heart attack, thyroid diseases, Parkinson’s disease, or sinus syndrome prior to getting prescribed for this medication.


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