Drug & supplement interaction

Adenosine + Losartan Potassium

Losartan Potassium brand name: Cozaar.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 13, 2026
The bottom line No known interaction

We found no known interaction between Adenosine and Losartan Potassium in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Adenosine and Losartan Potassium

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Losartan Potassium and Adenosine in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Adenosine safety at a glance

Adenosine overall Use caution Oral supplement evidence is limited; the prescription injectable form is powerful and must only be given by medical professionals.
Pregnancy Avoid There is not enough safety information for supplement use, so it is best avoided.
Breastfeeding Avoid Safety has not been established, so avoid supplement use while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Losartan Potassium and Adenosine? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Losartan Potassium

Interactions in our licensed database are recorded against drug classes, not just single drug names. Losartan Potassium is filed under 7 classifications — including angiotensin receptor blockers (arbs), cytochrome p450 2c9 (cyp2c9) substrates, antihypertensive drugs. Adenosine has documented interactions with 3 drug classes — the most serious being dipyridamole (persantine) (major), carbamazepine (tegretol) (moderate) and methylxanthines (minor) — and none of Losartan Potassium’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Adenosine Does Interact With Other Medications

Adenosine has 2 major, 1 moderate, 44 minor known drug interactions in our database — Losartan Potassium isn’t one of them. If you take anything else, check it against the full list below.

Major 2 Moderate 1 Minor 44 No known interaction 2,783 (incl. Losartan Potassium)
Taking anything else?

Check Another of Your Medications Against Adenosine

Covers the 2,830 medications we’ve checked against Adenosine. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Adenosine and Losartan Potassium May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do. 4 of them are worth acting on rather than waiting out — marked below.

  • An irregular heartbeat / Chest pain Worth acting on Additional detail

    Adenosine

    “Intravenously, adenosine causes chest pain, palpitations, hypotension, and supraventricular tachycardia (15,9148). Intravenous adenosine has also been associated with arrhythmias, fatal or nonfatal cardiac arrest, ventricular tachycardia, and myocardial infarction (15). Intravenously, adenosine triphosphate (ATP) causes chest pain, particularly at doses greater than 50 mcg/kg per minute.”

    Adenosine · Natural Medicines adverse-effect record, reported in arrhythmia.

    3 sources cited
    1. 15. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
    2. 9148. Agteresch HJ, Dagnelie PC, van den Berg JW, Wilson JH. Adenosine triphosphate: established and potential clinical applications. Drugs 1999;58:211-32.. PubMed
    3. 9154. Haskell CM, Mendoza E, Pisters KM, et al. Phase II study of intravenous adenosine 5'-triphosphate in patients with previously untreated stage IIIB and stage IV non-small cell lung cancer. Invest New Drugs 1998;16:81-5.. PubMed

    Losartan Potassium

    Listed in the ADVERSE REACTIONS section of the FDA label for Losartan Potassium. Read the label on DailyMed ›

  • Shortness of breath / An allergic reaction Worth acting on reported in 5.2% of FDA reports for Losartan Potassium Additional detail

    Adenosine

    Recorded for Adenosine in the same Natural Medicines adverse-effect record shown under An irregular heartbeat / Chest pain above.

    Losartan Potassium

    Listed in the ADVERSE REACTIONS section of the FDA label for Losartan Potassium, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

  • A fast or pounding heartbeat / Low blood pressure Additional detail

    Adenosine

    Recorded for Adenosine in the same Natural Medicines adverse-effect record shown under An irregular heartbeat / Chest pain above.

    Losartan Potassium

    Listed in the ADVERSE REACTIONS section of the FDA label for Losartan Potassium. Read the label on DailyMed ›

  • Numbness or tingling Additional detail

    Adenosine

    Recorded for Adenosine in the same Natural Medicines adverse-effect record shown under An irregular heartbeat / Chest pain above.

    Losartan Potassium

    Listed in the ADVERSE REACTIONS section of the FDA label for Losartan Potassium. Read the label on DailyMed ›

  • Dizziness / Headache reported in 4.9% of FDA reports for Losartan Potassium Additional detail

    Adenosine

    “Rapid intravenous injection of adenosine can cause headache, lightheadedness, insomnia, and anxiety. New onset seizures, including tonic-clonic seizures, have also occurred (15). Intrathecally, adenosine has been reported to cause headache.”

    Adenosine · Natural Medicines adverse-effect record, reported in anxiety.

    6 sources cited
    1. 9148. Agteresch HJ, Dagnelie PC, van den Berg JW, Wilson JH. Adenosine triphosphate: established and potential clinical applications. Drugs 1999;58:211-32.. PubMed
    2. 9151. Agteresch HJ, Dagnelie PC, van der Gaast A, et al. Randomized clinical trial of adenosine 5'-triphosphate in patients with advanced non-small-cell lung cancer. J Natl Cancer Inst 2000;92:321-8.. PubMed
    3. 9152. Haskell CM, Wong M, Williams A, Lee LY. Phase I trial of extracellular adenosine 5'-triphosphate in patients with advanced cancer. Med Pediatr Oncol 1996;27:165-73.. DOI
    4. 9154. Haskell CM, Mendoza E, Pisters KM, et al. Phase II study of intravenous adenosine 5'-triphosphate in patients with previously untreated stage IIIB and stage IV non-small cell lung cancer. Invest New Drugs 1998;16:81-5.. PubMed
    5. 9158. Agteresch HJ, Dagnelie PC, Rietveld T, et al. Pharmacokinetics of intravenous ATP in cancer patients. Eur J Clin Pharmacol 2000;56:49-55.. PubMed
    6. 15. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.

    Losartan Potassium

    Listed in the ADVERSE REACTIONS section of the FDA label for Losartan Potassium, and in voluntary FDA adverse-event reports. Read the label on DailyMed ›

  • Itching Additional detail

    Adenosine

    “Intravenously, adenosine causes flushing in up to 44% of patients in clinical research (15). Topically, folliculitis and pruritus can occur after application of adenosine to the scalp.”

    Adenosine · Natural Medicines adverse-effect record, reported in pruritus.

    2 sources cited
    1. 15. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
    2. 93689. Faghihi G, Iraji F, Rajaee Harandi M, et al. Comparison of the efficacy of topical minoxidil 5% and adenosine 0.75% solutions on male androgenic alopecia and measuring patient satisfaction rate. Acta Dermatovenerol Croat 2013;21(3):155-9.

    Losartan Potassium

    Listed in the ADVERSE REACTIONS section of the FDA label for Losartan Potassium. Read the label on DailyMed ›

Showing the 10 most notable of 11 shared effects — ranked by how unusual each one is, not just whether both lists mention it.

Reported for Adenosine but not commonly for Losartan Potassium: a heart attack, flushing, anxiety or restlessness and trouble sleeping.

Effects for Losartan Potassium come from the ADVERSE REACTIONS section of its FDA label; effects for Adenosine come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 89,498 voluntary FDA FAERS reports for Losartan Potassium that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

From our Q&A

Questions About Adenosine or Losartan Potassium

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Adenosine or Losartan Potassium, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Losartan Potassium

This page covers Adenosine only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Losartan Potassium page lists 253 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), American Mistletoe (major), Grapefruit (major) and St. John's Wort (major).

By severity: 6 major · 205 moderate · 42 minor.

From our pharmacist’s overview on the Losartan Potassium page

“Losartan potassium (Cozaar) treats high blood pressure, and this is a list to respect, because six of its 253 supplement interactions carry a major rating. Most entries do one of two things.”

Reviewed by 2 · Jul 18, 2026

Open the Losartan Potassium interaction page

One more smart check

Taking Adenosine as Part of a Dietary Supplement Product? Check It for Interactions

We hold 66 real supplement products containing Adenosine, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Adenosine. Even though Adenosine itself has no known interaction with Losartan Potassium, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Adenosine and Losartan Potassium Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Adenosine
Top half

#387 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Losartan Potassium
Top 10

#6 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Adenosine reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Adenosine and Losartan Potassium records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Adenosine

What is Adenosine?

Adenosine
  • Energy and cellular function support
  • Athletic performance and muscle energy
  • Circulation support
  • General wellness

Adenosine is a natural building block your body uses for energy and cell signaling, and a prescription injectable version is used by doctors to treat certain fast heart rhythms. As an over-the-counter supplement (often sold as AMP or ATP), there is little strong evidence that swallowing it boosts energy or performance, and quality can vary. Talk to your pharmacist before using adenosine supplements, especially if you have a heart condition.

Naturally occurring purine nucleoside found in all body cells; supplement forms are made synthetically · Tablets, capsules, sublingual tablets, powders (often as AMP or ATP); prescription injectable form (separate from supplements)

An interaction check asks whether these two react with each other — it does not ask whether Adenosine is a good idea for someone in your situation. Here is what our Adenosine record says about it on its own.

Adenosine: dosing

There is no established standard dose for adenosine supplements. Products vary widely in form (AMP, ATP, or adenosine) and in the amounts they contain.If you choose to use a supplement, follow the directions on the product label and do not take more than recommended. Because supplements are not tightly regulated, quality and actual content can differ between brands; choosing products that have been independently tested can help.The prescription injectable dose is determined and given by a doctor and does not apply to supplement use.

From our Adenosine monograph — the full record covers uses, side effects and every documented interaction.

Read the full Adenosine monograph & all interactions
Medication

About Losartan

What Is Losartan Used For?

Brand name: Cozaar

Losartan tablets — available as branded Cozaar and several generic products — are used to treat high blood pressure (hypertension) in adults and children 6 years and older. Lowering blood pressure reduces the risk of strokes and heart attacks. Losartan tablets are also used to reduce the risk of stroke in people with high blood pressure who also have left ventricular hypertrophy (an enlarged left side of the heart). Note: evidence suggests this stroke-risk benefit may not apply to Black patients.

Losartan tablets are additionally approved to protect the kidneys in people with type 2 diabetes, high blood pressure, and signs of kidney damage (diabetic nephropathy). Arbli, the oral suspension form, shares these same approved uses.

Most-Reported Side Effects for Losartan Potassium

From FAERS, the FDA’s public side-effect reporting system (89,498 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fatigue 6,464 reports
Nausea 5,301 reports
Diarrhea 5,184 reports
Dyspnea 4,689 reports
Dizziness 4,429 reports
See full Losartan drug information
Keep checking

Other Drugs & Adenosine

Browse every other medication we’ve checked against Adenosine — both the ones with a known interaction and the ones without. Select any drug for the full detail.

2Major
1Moderate
44Minor
2,782No known interaction
2 Major 1 Moderate 44 Minor 2,782 No interaction
Major

2 interactions

Moderate

1 interaction

Minor

44 interactions

No interaction 2,782 drugs checked — show the list

We also checked Adenosine against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,782 medications checked with no known interaction — see the full Adenosine list.

See the full Adenosine interactions page
See every supplement checked against Losartan Potassium, ranked by severity
Evidence & sources

Adenosine References

The 10 references that drive our Adenosine monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. McEvoy GK, ed. AHFS Drug Information. Bethesda, MD: American Society of Health-System Pharmacists, 1998.
  2. Agteresch HJ, Dagnelie PC, van den Berg JW, Wilson JH. Adenosine triphosphate: established and potential clinical applications. Drugs 1999;58:211-32.. PubMed
  3. Agteresch HJ, Dagnelie PC, van der Gaast A, et al. Randomized clinical trial of adenosine 5'-triphosphate in patients with advanced non-small-cell lung cancer. J Natl Cancer Inst 2000;92:321-8.. PubMed
  4. Haskell CM, Wong M, Williams A, Lee LY. Phase I trial of extracellular adenosine 5'-triphosphate in patients with advanced cancer. Med Pediatr Oncol 1996;27:165-73.. DOI
  5. Haskell CM, Mendoza E, Pisters KM, et al. Phase II study of intravenous adenosine 5'-triphosphate in patients with previously untreated stage IIIB and stage IV non-small cell lung cancer. Invest New Drugs 1998;16:81-5.. PubMed
  6. Eisenach JC, Curry R, Hood DD. Dose response of intrathecal adenosine in experimental pain and allodynia. Anesthesiology 2002;97:938-42.. PubMed
  7. Agteresch HJ, Dagnelie PC, Rietveld T, et al. Pharmacokinetics of intravenous ATP in cancer patients. Eur J Clin Pharmacol 2000;56:49-55.. PubMed
  8. Underwood DA. Which medications should be held before a pharmacologic or exercise stress test? Cleve Clin J Med 2002;69:449-50. PubMed
  9. Litmann L, Anderson JD, Monroe MH. Adenosine and Aggrenox: A hazardous combination. Ann Intern Med 2002;137:E-76. PubMed
  10. Faghihi G, Iraji F, Rajaee Harandi M, et al. Comparison of the efficacy of topical minoxidil 5% and adenosine 0.75% solutions on male androgenic alopecia and measuring patient satisfaction rate. Acta Dermatovenerol Croat 2013;21(3):155-9.

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Adenosine and Losartan Potassium Together: Common Questions

Is it safe to take Adenosine with Losartan Potassium?
We do not list a known interaction between Adenosine and Losartan Potassium. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Do Adenosine and Losartan Potassium have any of the same side effects?
Yes — our sources link each of them separately to 10 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
How was the Adenosine and Losartan Potassium combination checked?
Interactions in our licensed database are recorded against drug classes. Losartan Potassium is filed under 7 classifications, and Adenosine has documented interactions with 3 drug classes — none of Losartan Potassium's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Adenosine interact with any other medications?
Yes. Adenosine has 47 documented drug interactions in our database — Losartan Potassium is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Losartan Potassium interact with any supplements?
Yes. Losartan Potassium has documented interactions with 253 supplements in our database — Adenosine is not one of them. The Losartan Potassium interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Adenosine monograph Uses, safety profile, and every drug interaction in one place Losartan drug information The full plain-English guide to this medication Losartan Potassium supplement interactions Every supplement checked against Losartan Potassium, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 10 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Losartan Potassium and Adenosine?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.