adenosine vs ivabradine
Side-by-side comparison of adenosine and ivabradine Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Adenocard
Corlanor
Adenosine (Adenocard) is a medicine used to treat certain types of irregular heartbeats. It belongs to a class of drugs called antiarrhythmics.
Ivabradine (Corlanor) is a medicine that helps lower the risk of needing to go to the hospital for worsening heart failure. It works by slowing down your heart rate.
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.
Ivabradine is used to lower the chance of hospitalization if your heart failure gets worse. It is for adults who have stable, long-term heart failure and a weak heart (left ventricular ejection fraction ≤ 35%). You must also have a resting heart rate of 70 beats per minute or higher and are either taking the highest dose of beta-blockers you can handle or cannot take beta-blockers at all.
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.
Ivabradine works by blocking certain channels in your heart called HCN channels. These channels control your heart's natural pacemaker. By blocking these channels, ivabradine slows down your heart rate.
No common side effects listed.
- • Slow heart rate
- • High blood pressure
- • Irregular heartbeat (atrial fibrillation)
- • Seeing bright flashes of light
- 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
- Using the medicine for something it's not approved for 1,295
- Shortness of breath 459
- Low blood pressure 413
- Feeling lightheaded or unsteady 350
- Heart failure 324
Since this medication is administered by a healthcare provider in a monitored setting, there are no specific at-home warnings.
Ivabradine can harm an unborn baby. If you are a woman who could get pregnant, use effective birth control while taking this medicine. This medicine can also cause a very slow heart rate. Your doctor will monitor your heart rate and adjust your dose as needed.
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.
Ivabradine can cause harm to an unborn baby. Do not take this medicine if you are pregnant or planning to become pregnant. It is not recommended to breastfeed while taking ivabradine.
How to Read This adenosine vs ivabradine Comparison
adenosine is classified in the Endogenous Nucleoside (Antiarrhythmic) drug class, while ivabradine sits within the HCN Channel Blocker 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 ivabradine has 2,841. 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 ivabradine — 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.