Updated: February 18, 2026
Qbrelis Drug Interactions: What to Avoid and What to Tell Your Doctor
Author
Peter Daggett

Summarize with AI
Learn about important Qbrelis drug interactions. Find out which medications, foods, and supplements to avoid while taking Lisinopril oral solution.
Qbrelis Drug Interactions: What You Need to Know
When you take Qbrelis (Lisinopril oral solution), it's important to know which other medications, foods, and supplements can interact with it. Some interactions can reduce how well Qbrelis works. Others can cause dangerous side effects.
This guide covers the most important Qbrelis drug interactions and what you should tell your doctor before starting treatment.
What Is Qbrelis?
Qbrelis is the liquid form of Lisinopril, an ACE inhibitor used to treat high blood pressure, heart failure, and to improve survival after a heart attack. For a complete overview, see What Is Qbrelis? Uses, Dosage, and What You Need to Know. To understand how it works, read How Does Qbrelis Work?
Dangerous Drug Interactions
These interactions can be serious or even life-threatening. Make sure your doctor knows if you take any of the following:
1. Sacubitril/Valsartan (Entresto)
Do not take Qbrelis within 36 hours of taking Entresto. Combining these medications significantly increases the risk of angioedema — dangerous swelling of the face, lips, tongue, or throat that can block your airway. This is a strict contraindication.
2. Aliskiren (Tekturna)
If you have diabetes, you must not take Aliskiren with Qbrelis. This combination increases the risk of dangerously low blood pressure, high potassium, and kidney failure. Even in patients without diabetes, this combination should be used with extreme caution.
3. ARBs (Angiotensin Receptor Blockers)
Medications like Losartan, Valsartan, and Irbesartan work on the same blood pressure system as Qbrelis. Taking them together (called "dual RAAS blockade") raises the risk of low blood pressure, high potassium, and kidney damage. Your doctor should generally avoid combining these with Qbrelis.
4. Potassium-Sparing Diuretics
Medications like Spironolactone (Aldactone) and Eplerenone (Inspra) can raise potassium levels. Since Qbrelis also raises potassium, combining them increases the risk of hyperkalemia (dangerously high potassium). Your doctor will need to monitor your potassium levels closely if you must take both.
Important Drug Interactions
5. NSAIDs (Pain Relievers)
Common over-the-counter pain relievers like ibuprofen (Advil, Motrin) and naproxen (Aleve) can:
- Reduce how well Qbrelis lowers your blood pressure
- Increase the risk of kidney problems
If you need a pain reliever, ask your doctor whether acetaminophen (Tylenol) is a safer option for you.
6. Lithium
Qbrelis can increase lithium levels in your blood, raising the risk of lithium toxicity. Symptoms of lithium toxicity include tremor, nausea, confusion, and irregular heartbeat. If you take lithium, your doctor should check your lithium levels frequently.
7. Gold Injections
Patients receiving sodium aurothiomalate (injectable gold) for conditions like rheumatoid arthritis may experience nitritoid reactions when combined with ACE inhibitors like Qbrelis. Symptoms include flushing, nausea, dizziness, and low blood pressure.
8. mTOR Inhibitors
Medications like Sirolimus, Everolimus, and Temsirolimus (used for transplant patients and certain cancers) can increase the risk of angioedema when taken with Qbrelis. Tell your doctor if you take any of these medications.
Food and Supplement Interactions
High-Potassium Foods
While you don't need to completely avoid potassium-rich foods, you should be aware that Qbrelis raises potassium levels. Eating large amounts of the following foods may contribute to high potassium:
- Bananas
- Oranges and orange juice
- Potatoes
- Tomatoes
- Spinach and leafy greens
- Avocados
You don't need to eliminate these foods, but talk to your doctor about how much is safe for you.
Salt Substitutes
Avoid salt substitutes that contain potassium chloride. Many people with high blood pressure use salt substitutes to reduce sodium intake. However, these products are often made with potassium chloride, which can raise your potassium to dangerous levels when combined with Qbrelis.
Potassium Supplements
Do not take potassium supplements unless your doctor specifically prescribes them. Since Qbrelis already raises potassium levels, adding supplements on top can lead to hyperkalemia.
What to Tell Your Doctor
Before starting Qbrelis, give your doctor a complete list of:
- All prescription medications you take
- Over-the-counter medications including pain relievers, allergy medications, and antacids
- Vitamins and supplements — especially potassium, magnesium, or herbal products
- Any recent medication changes
Also tell your doctor if you:
- Have diabetes
- Have kidney disease
- Have liver problems
- Are pregnant or planning to become pregnant (Qbrelis is contraindicated in pregnancy)
- Are breastfeeding
Signs of a Drug Interaction
Watch for these warning signs that Qbrelis may be interacting with another medication:
- Dizziness or lightheadedness — may indicate blood pressure is too low
- Muscle weakness or irregular heartbeat — may indicate high potassium
- Swelling of face, lips, or throat — sign of angioedema (call 911)
- Changes in urination — may indicate kidney problems
- Unusual fatigue or confusion
If you experience any of these symptoms, contact your doctor or seek emergency care immediately. Learn more about what to watch for in our Qbrelis side effects guide.
Can You Take Over-the-Counter Medications With Qbrelis?
Some OTC medications are fine. Others are not. Here's a quick guide:
- Acetaminophen (Tylenol): Generally safe
- Ibuprofen (Advil, Motrin): Use with caution — can reduce Qbrelis effectiveness and harm kidneys
- Naproxen (Aleve): Same concerns as ibuprofen
- Antacids: Generally safe, but check with your pharmacist
- Cold medications: Some contain NSAIDs or decongestants that can raise blood pressure — always check the label
Getting Your Qbrelis
Once you and your doctor have reviewed your medications and confirmed Qbrelis is safe for you, the next step is filling your prescription. Use MedFinder.com to find pharmacies near you with Qbrelis in stock.
For more help, explore these related guides:
- How to Find Qbrelis in Stock Near You
- How to Check If a Pharmacy Has Qbrelis in Stock
- How to Save Money on Qbrelis
- Find a Doctor Who Can Prescribe Qbrelis
- Alternatives to Qbrelis
The Bottom Line
Qbrelis can interact with several common medications, foods, and supplements. The most dangerous interactions include Entresto (within 36 hours), Aliskiren (in diabetic patients), ARBs, and potassium-sparing diuretics. NSAIDs can reduce its effectiveness and harm your kidneys.
Always keep your doctor and pharmacist informed about everything you take. With the right precautions, Qbrelis is a safe and effective treatment for high blood pressure, heart failure, and post-heart attack recovery. Visit MedFinder to find Qbrelis near you.
Frequently Asked Questions
Ibuprofen and other NSAIDs can reduce how well Qbrelis lowers blood pressure and increase the risk of kidney problems. Acetaminophen (Tylenol) is generally a safer pain relief option while taking Qbrelis. Always check with your doctor first.
You can eat bananas in moderation, but be aware that Qbrelis raises potassium levels. Eating very large amounts of high-potassium foods like bananas, oranges, and potatoes could contribute to dangerously high potassium. Talk to your doctor about a safe amount.
No. You must not take Qbrelis within 36 hours of taking Entresto (Sacubitril/Valsartan). Combining these medications significantly increases the risk of angioedema, which is dangerous swelling that can block your airway.
Yes. Many salt substitutes contain potassium chloride, which can raise your potassium levels to dangerous levels when combined with Qbrelis. Use regular salt in moderation or ask your doctor about safe alternatives.
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