digoxin vs metformin

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Side-by-side comparison of digoxin and metformin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

minor Known Drug Interaction

Conivaptan 33% 43% Diltiazem 20% NA Indomethacin 40% NA Mirabegron 29% 27% Nefazodone 27% 15% Nifedipine 45% NA Propantheline 24% 24% Quinine NA 33% Rabeprazole 29% 19% Saquinavir 27% 49% Spironolactone 25% NA Telmisartan 20 to 49% NA Tricagrelor 31% 28% Tolvaptan 30% 20% Trimethoprim 22 to 28% NA Digoxin concentrations increased, but magnitude is unclear Alprazolam, azithromycin, cyclosporine, diclofenac, diphenoxylate, epoprostenol, esomeprazole, ibuprofen, ketoconazole, lansoprazole, metformin, omeprazole Measure serum digoxin concentrations before initiating concomitant drugs.

Drug Class
digoxin Cardiac Glycoside
metformin Biguanide
Type
digoxin Prescription
metformin Prescription
Summary
digoxin

Digoxin (Lanoxin) is a medicine that helps your heart pump better. It is used to treat heart failure and control irregular heartbeats.

metformin

No summary available.

What It Treats
digoxin

Digoxin is used to treat mild to moderate heart failure in adults. It helps the heart pump more blood with each beat. Digoxin is also used in children with heart failure to help their heart work better. In adults, it can control a fast and irregular heartbeat called atrial fibrillation.

metformin

Information not available.

How It Works
digoxin

Digoxin belongs to a class of drugs called cardiac glycosides. It works by making the heart muscle contract more strongly. It also slows down the electrical signals in the heart, which can help control irregular heartbeats.

metformin

Information not available.

Common Side Effects
digoxin
  • Nausea
  • Vomiting
  • Diarrhea
  • Dizziness
  • Headache
metformin
  • Diarrhea
  • Upper respiratory tract infection (like a cold)
  • Headache
FAERS Reports
digoxin
  • Dyspnoea 6,065
  • Nausea 4,754
  • Dizziness 4,439
  • Fatigue 4,175
  • Atrial Fibrillation 3,974
metformin
  • Nausea 21,946
  • Diarrhoea 21,884
  • Blood Glucose Increased 18,328
  • Fatigue 17,252
  • Acute Kidney Injury 16,440
Serious Warnings
digoxin

Digoxin can cause serious side effects, including dangerous heart rhythms. You are at higher risk if you have certain heart conditions or kidney problems. Tell your doctor right away if you have nausea, vomiting, vision changes, or an irregular heartbeat.

metformin

No specific warnings noted.

Pregnancy
digoxin

It is not known if digoxin can harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant. The medicine passes into breast milk, but it is unlikely to harm the baby.

metformin

No pregnancy information available.

How to Read This digoxin vs metformin Comparison

digoxin is classified in the Cardiac Glycoside drug class, while metformin sits within the Biguanide class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, digoxin has 23,407 submissions while metformin has 95,850. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to taking metformin can cause the amount of digoxin in your blood to rise. it is not yet known exactly how much the levels will increase.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for digoxin or metformin.

Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.