Celebrex Interacts with More Medications Than You Might Expect

If you take Celebrex (Celecoxib), it's important to know that it interacts with a number of common medications, supplements, and even some foods. Some of these interactions can increase your risk of bleeding, kidney damage, or reduce how well your other medications work.

This guide covers the major and moderate drug interactions, what supplements to watch out for, and exactly what you should tell your doctor before starting Celebrex.

How Drug Interactions Work with Celebrex

Drug interactions happen when two or more substances affect each other in your body. With Celebrex, interactions typically work in one of three ways:

1. Increased side effects — Another drug amplifies the risks of Celebrex (like GI bleeding or kidney damage)
2. Reduced effectiveness — Celebrex may make another medication work less well (like blood pressure drugs)
3. Increased drug levels — Another drug may slow down how your body processes Celebrex, causing it to build up to higher-than-expected levels

Celebrex is metabolized primarily by the CYP2C9 enzyme in the liver. Drugs that inhibit this enzyme can increase Celecoxib levels in your blood, raising the risk of side effects.

Medications That Interact with Celebrex

Major Interactions — Discuss with Your Doctor

• Other NSAIDs (Ibuprofen, Naproxen, Diclofenac, Meloxicam) — Taking two NSAIDs together significantly increases the risk of GI bleeding and ulcers. Never combine Celebrex with other NSAIDs unless specifically directed by your doctor.
• Aspirin — Low-dose Aspirin for heart protection can still be used with Celebrex, but the combination increases GI bleeding risk. Celebrex may also reduce Aspirin's cardioprotective effects. Talk to your doctor about timing and whether you need a stomach-protecting medication.
• Anticoagulants (Warfarin/Coumadin, Heparin, Enoxaparin) — Celebrex increases bleeding risk when combined with blood thinners. If you take Warfarin, your doctor should monitor your INR more closely after starting Celebrex.
• Lithium — Celebrex can increase lithium levels in the blood, potentially leading to lithium toxicity. Symptoms include tremors, nausea, confusion, and irregular heartbeat. Your doctor should monitor lithium levels closely.
• Methotrexate — Celebrex can increase Methotrexate levels, raising the risk of Methotrexate toxicity (bone marrow suppression, liver damage). Close monitoring is required.
• Cyclosporine — The combination increases the risk of kidney damage (nephrotoxicity). Kidney function should be monitored regularly.

Moderate Interactions — Use with Caution

• ACE inhibitors (Lisinopril, Enalapril, Ramipril) — Celebrex can reduce the blood pressure-lowering effects of ACE inhibitors and increase the risk of kidney problems. Your doctor may need to adjust your blood pressure medication or monitor kidney function.
• ARBs (Losartan, Valsartan, Olmesartan) — Similar to ACE inhibitors: reduced antihypertensive effect and increased renal risk when combined with Celebrex.
• Diuretics (Furosemide, Hydrochlorothiazide) — Celebrex can reduce the effectiveness of diuretics and increase the risk of kidney problems. Stay well-hydrated and have kidney function monitored.
• Corticosteroids (Prednisone, Dexamethasone) — Combining corticosteroids with Celebrex increases the risk of GI ulceration and bleeding. If both are needed, your doctor may add a proton pump inhibitor (like Omeprazole) to protect your stomach.
• SSRIs (Fluoxetine/Prozac, Sertraline/Zoloft, Escitalopram/Lexapro) — Antidepressants in the SSRI class increase bleeding risk when combined with NSAIDs. Watch for unusual bruising or signs of bleeding.
• SNRIs (Venlafaxine/Effexor, Duloxetine/Cymbalta) — Similar increased bleeding risk as SSRIs.
• CYP2C9 inhibitors (Fluconazole) — Fluconazole and similar drugs slow down how your body processes Celebrex, leading to higher Celecoxib levels and increased risk of side effects. Your doctor may reduce your Celebrex dose.

Supplements and Over-the-Counter Drugs to Watch

It's not just prescription medications — some supplements and OTC drugs interact with Celebrex too:

• Fish oil / Omega-3 supplements — May have additive blood-thinning effects, potentially increasing bleeding risk
• Ginkgo biloba — Known to increase bleeding risk; avoid combining with Celebrex
• Garlic supplements — High-dose garlic supplements may increase bleeding risk
• Over-the-counter Ibuprofen (Advil) or Naproxen (Aleve) — Do not take these alongside Celebrex. Many people don't realize that their OTC pain reliever is in the same drug class.
• Aspirin (OTC doses) — Even low-dose Aspirin increases GI risk when combined with Celebrex. Don't start or stop Aspirin without discussing it with your doctor.

Food and Drink Interactions

• Alcohol — Drinking alcohol while taking Celebrex significantly increases your risk of stomach bleeding and ulcers. Limit alcohol or avoid it entirely, especially if you take Celebrex regularly.
• Food in general — Celebrex can be taken with or without food. Taking it with food may reduce stomach upset but does not significantly affect how the drug is absorbed.

What to Tell Your Doctor Before Starting Celebrex

Before your doctor prescribes Celebrex, make sure they know about:

All Medications You Take

Include prescriptions, over-the-counter drugs, vitamins, and supplements. Pay special attention to:

• Blood thinners (Warfarin, Eliquis, Xarelto)
• Blood pressure medications (especially ACE inhibitors, ARBs, and diuretics)
• Antidepressants (SSRIs and SNRIs)
• Lithium or Methotrexate
• Any other pain medications or NSAIDs

Your Medical History

• History of stomach ulcers or GI bleeding
• Heart disease, heart failure, or history of heart attack or stroke
• High blood pressure
• Kidney or liver disease
• Allergies to sulfonamides, Aspirin, or other NSAIDs
• Whether you're pregnant, planning to become pregnant, or breastfeeding

Your Lifestyle

• How much alcohol you drink
• Whether you smoke (increases cardiovascular risk)
• Any supplements you take regularly

Your pharmacist is also a great resource — they can run an interaction check every time you fill a new prescription. Don't hesitate to ask.

For more on Celebrex safety, see our guide on Celebrex side effects and when to call your doctor.

Final Thoughts

Celebrex is an effective medication for pain and inflammation, but it interacts with a wide range of common drugs — including blood thinners, blood pressure medications, antidepressants, and even some supplements.

The most important thing you can do is give your doctor and pharmacist a complete list of everything you take before starting Celebrex. Most interactions are manageable with dose adjustments, monitoring, or timing changes — but only if your healthcare team knows about them.

Looking for Celebrex at a good price? Search Medfinder to find pharmacies near you with Celecoxib in stock.