adenosine vs milrinone
Side-by-side comparison of adenosine and milrinone Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Adenosine (Adenocard) is a medicine used to treat certain types of irregular heartbeats. It belongs to a class of drugs called antiarrhythmics.
Milrinone is a medicine used in the hospital for a short time to help people with severe heart failure. It helps your heart pump better.
Adenosine is used to treat a very fast heart rate in the upper chambers of your heart. This condition is called supraventricular tachycardia (SVT). Adenosine helps to slow down your heart rate to a normal rhythm.
Milrinone is used for the short-term treatment of acute decompensated heart failure. This is when your heart suddenly can't pump enough blood to meet your body's needs. You will be watched closely while you get milrinone, using heart monitoring equipment.
Adenosine works by slowing down the electrical signals in your heart. This helps to interrupt the fast heart rhythm and restore a normal heartbeat. It does this by acting on specific receptors in the heart tissue.
Milrinone belongs to a class of drugs called phosphodiesterase-3 inhibitors. It makes more of a substance called cAMP available to your heart and blood vessels. This helps your heart muscle squeeze harder and widens your blood vessels, so blood flows more easily.
No common side effects listed.
- • Irregular heartbeats
- The medicine did not work 327
- Using the medicine for a condition it is not approved for 98
- Very fast heart rate 94
- Low blood pressure 86
- Heart stops beating 78
No adverse event reports.
Since this medication is administered by a healthcare provider in a monitored setting, there are no specific at-home warnings.
Be careful. Milrinone can cause life-threatening irregular heartbeats. Your doctor will watch your heart closely while you are taking this medicine.
It is not known if adenosine can harm an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is also not known if adenosine passes into breast milk, so discuss this with your doctor if you are breastfeeding.
Tell your doctor if you are pregnant or breastfeeding. It is not known if milrinone will harm your unborn baby. It is also not known if milrinone passes into breast milk.
How to Read This adenosine vs milrinone Comparison
adenosine is classified in the Endogenous Nucleoside (Antiarrhythmic) drug class, while milrinone sits within the Phosphodiesterase-3 Inhibitor 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, adenosine has 683 submissions while milrinone has 0. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between adenosine and milrinone — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.