adenosine vs dronedarone
PlainMeds reviewed this comparison against our methodology in August 2026. It places FDA and CMS record fields side by side, without recommending either medication.
Side-by-side comparison of adenosine and dronedarone. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Adenocard
Multaq
Adenosine (Adenocard) is a medicine used to treat certain types of irregular heartbeats. It belongs to a class of drugs called antiarrhythmics.
Multaq is a medicine that helps lower the risk of needing to stay in the hospital for atrial fibrillation (AFib). It is for people who have a history of AFib and are currently in normal heart rhythm.
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.
Multaq is used to lower the risk of hospitalization if you have atrial fibrillation (AFib). AFib is an irregular heartbeat. This medicine is for people who used to have AFib, but are now in a normal heart rhythm.
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.
Multaq is an antiarrhythmic drug. It works by changing the electrical signals in the heart. This helps to keep your heart in a normal rhythm and prevent AFib from returning.
No common side effects listed.
- • Diarrhea
- • Nausea
- • Abdominal pain
- • Vomiting
- • Feeling weak or tired
- Supraventricular Tachycardia 94
- Hypotension 86
- Cardiac Arrest 78
- Dyspnoea 74
- Pain 67
- Atrial Fibrillation 1,420
- Dyspnoea 838
- Fatigue 615
- Diarrhoea 477
- Nausea 472
Since this medication is administered by a healthcare provider in a monitored setting, there are no specific at-home warnings.
Multaq can increase the risk of death, stroke, and heart failure in patients with severe heart failure or permanent AFib. You should not take this medicine if you have severe heart failure that recently required hospitalization or if you have permanent AFib and will not be converted to a normal heart rhythm.
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.
Multaq can harm an unborn baby. If you are a woman who could become pregnant, use effective birth control while taking Multaq. Do not breastfeed while taking Multaq and for 5 days after your last dose.
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How to Read This adenosine vs dronedarone Comparison
adenosine is classified in the Endogenous Nucleoside (Antiarrhythmic) drug class, while dronedarone sits within the Class III Antiarrhythmic 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 399 submissions while dronedarone has 3,822. 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 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 adenosine or dronedarone.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.