adenosine vs vasopressin
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 vasopressin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Adenocard
Vasostrict
Adenosine (Adenocard) is a medicine used to treat certain types of irregular heartbeats. It belongs to a class of drugs called antiarrhythmics.
Vasopressin injection helps raise blood pressure in adults with shock. It is used when fluids and other medicines don't work well enough.
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.
Vasopressin injection is used to increase blood pressure. It is for adults who have vasodilatory shock. This is when blood vessels relax too much, causing low blood pressure. It is used when fluids and other medicines called catecholamines are not enough to raise blood pressure.
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.
Vasopressin is a hormone that makes blood vessels get tighter. This helps to increase blood pressure. It can also affect how your kidneys handle water.
No common side effects listed.
- • Decreased heart output
- • Slow heart rate
- • Fast or irregular heart rate
- • Low sodium levels in the blood
- • Reduced blood flow to the heart
- Supraventricular Tachycardia 94
- Hypotension 86
- Cardiac Arrest 78
- Dyspnoea 74
- Pain 67
- Hypotension 486
- Cardiogenic Shock 389
- Sepsis 380
- Multiple Organ Dysfunction Syndrome 375
- Condition Aggravated 359
Since this medication is administered by a healthcare provider in a monitored setting, there are no specific at-home warnings.
Vasopressin can worsen heart function. It can also cause a type of diabetes where you pee a lot. Your doctor will check your electrolytes and urine after you stop taking it.
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.
Vasopressin may cause the uterus to contract, which could be a problem during pregnancy. Tell your doctor if you are pregnant or plan to become pregnant. It is not known if vasopressin passes into breast milk.
How to Read This adenosine vs vasopressin Comparison
adenosine is classified in the Endogenous Nucleoside (Antiarrhythmic) drug class, while vasopressin sits within the Vasopressin Receptor Agonist 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 vasopressin has 1,989. 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 vasopressin.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.