"ORLANDO, FL â€” After more than 200 years, medicine is still figuring out how to use digoxin in patients with heart failure. A new retrospective analysis adds to the debate over whether the drug, also used in atrial fibrillation, offers clinical be"...
LANOXIN (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-ribohexopyranosyl)oxy]-12,14-dihydroxy-card-20(22)-enolide. Its molecular formula is C41H64O14, its molecular weight is 780.95, and its structural formula is:
Digoxin exists as odorless white crystals that melt 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.
LANOXIN Injection and Injection Pediatric are sterile solutions of digoxin for intravenous or intramuscular injection. The vehicle contains 40% propylene glycol and 10% alcohol. The injection is buffered to a pH of 6.8-7.2 with 0.17% dibasic sodium phosphate and 0.08% anhydrous citric acid. Each 2-mL ampule of LANOXIN Injection contains 500 mcg (0.5 mg) digoxin (250 mcg [0.25 mg] per mL). Dilution is not required. Each 1-mL ampule of LANOXIN Injection Pediatric contains 100 mcg (0.1 mg) digoxin. Dilution is not required.
Last reviewed on RxList: 2/3/2017
This monograph has been modified to include the generic and brand name in many instances.
Additional Lanoxin Injection Information
- Lanoxin Injection Drug Interactions Center: digoxin inj
- Lanoxin Injection Side Effects Center
- Lanoxin Injection FDA Approved Prescribing Information including Dosage
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