Furosemide and Albuterol Oral Inhalation: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 2, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Furosemide
Albuterol Oral Inhalation
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
You're taking two medicines that can both lower your body's potassium. Furosemide (Lasix) is a water pill that makes you pee out extra fluid, and it pulls potassium out with it. Albuterol (your inhaler) can also push potassium down, especially if you use a lot of it. When potassium drops too low, you might feel muscle cramps, weakness, or notice your heart beating oddly.
The good news is this is a possible risk, not a sure thing, and it's easy to keep an eye on. Your care team can check your potassium with a simple blood test and adjust things if needed. Keep using both as prescribed and let your pharmacist or doctor know if you feel unusually weak, crampy, or have a fluttering heartbeat.
Effect: Additive risk of hypokalemia and associated ECG changes when albuterol (beta-2 agonist, drives intracellular K+ shift) is combined with furosemide (loop diuretic causing renal K+ loss). This is a pharmacodynamic, not pharmacokinetic, interaction; neither agent alters the other's metabolism.
- Direction: Additive potassium-lowering, greatest at supratherapeutic beta-agonist doses.
- Onset: Unspecified.
- Evidence: Theoretical.
- Severity on file: Major.
Management: Monitor serum potassium during concomitant use, especially with high or frequent albuterol dosing. Correct/repleat potassium as clinically indicated and consider ECG monitoring in symptomatic or high-risk patients. Individualize diuretic and potassium repletion.
What happens
An increased risk of ECG changes or hypokalemia
Interaction Deep Dive
Exercise caution when albuterol is given together with a diuretic that depletes potassium. Taking albuterol, which is a beta-adrenergic agonist, at the same time as a potassium-depleting diuretic (for example, a thiazide or loop diuretic) can raise the likelihood of hypokalemia or ECG alterations, particularly when beta-agonist doses go beyond what is recommended. Monitoring of potassium levels throughout albuterol treatment should be considered12.
Why it happens (mechanism)
Potentiation of diuretic-induced ECG changes and hypokalemia by albuterol
How to manage this interaction
Your care team can manage this easily by keeping an eye on your potassium.
- Keep taking both your furosemide and albuterol exactly as prescribed unless told otherwise.
- Your team may check your potassium level with a blood test, especially if you use your inhaler often or in high amounts.
- Doses and any potassium supplements may be adjusted and individualized by your care team.
- Tell your pharmacist or doctor if you notice muscle cramps, weakness, or an irregular or racing heartbeat.
Management is individual — confirm any change with your pharmacist or prescriber.
Common questions
Can I take Furosemide and Albuterol Oral Inhalation together?
Both drugs can lower potassium, so using them together may increase the risk of low potassium or heart rhythm changes; your care team can manage this with occasional potassium checks. Keep taking both as prescribed and report cramps, weakness, or a fluttering heartbeat. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Furosemide and Albuterol Oral Inhalation interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Furosemide and Albuterol Oral Inhalation interaction managed?
Your care team can manage this easily by keeping an eye on your potassium. Keep taking both your furosemide and albuterol exactly as prescribed unless told otherwise. Your team may check your potassium level with a blood test, especially if you use your inhaler often or in high amounts. Doses and any potassium supplements may be adjusted and individualized by your care team. Tell your pharmacist o… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
From our Q&A
Real reader questions about these medications, each personally answered by our pharmacist:
Questions for your pharmacist
- Does my dose of Furosemide or Albuterol Oral Inhalation need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (2)
- Product Information: PROAIR(R) RESPICLICK(TM) oral inhalation powder, albuterol sulfate oral inhalation powder. Teva Respiratory, LLC (per manufacturer), Horsham, PA, 2015. DailyMed
- Product Information: AIRSUPRA(TM) oral inhalation aerosol, albuterol budesonide oral inhalation aerosol. AstraZeneca Pharmaceuticals LP (per FDA), Wilmington, DE, 2023. DailyMed
Keep reading about Furosemide
Keep reading about Albuterol Oral Inhalation
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