Can You Take Flexeril (Cyclobenzaprine) with Plavix and Aspirin?
Yes, you can safely take cyclobenzaprine (Flexeril) while on clopidogrel (Plavix) and aspirin—there is no known drug interaction between these medications.
Why This Combination is Safe
Cyclobenzaprine is a centrally-acting muscle relaxant that works through the central nervous system to reduce muscle spasm. It does not:
- Affect platelet function or blood clotting mechanisms
- Interact with the cytochrome P450 enzymes (particularly CYP2C19 and CYP3A4) that metabolize clopidogrel
- Interfere with aspirin's antiplatelet effects
- Increase bleeding risk beyond what is already present with dual antiplatelet therapy
Important Context About Your Antiplatelet Therapy
The Plavix (clopidogrel) and aspirin combination you're taking is standard dual antiplatelet therapy, typically prescribed for:
- Acute coronary syndrome
- Recent stent placement
- Recent heart attack or stroke
- Established cardiovascular disease
This combination is recommended by major cardiovascular guidelines and should be continued as prescribed by your cardiologist 4.
What You Actually Need to Watch For
While Flexeril is safe with your antiplatelet regimen, be aware of medications that DO interact with Plavix:
Avoid These Medications:
- Omeprazole and esomeprazole (proton pump inhibitors) - significantly reduce Plavix effectiveness 5, 4, 6
- Strong CYP2C19 inhibitors - impair conversion of Plavix to its active form 4, 6
Use Caution With:
- NSAIDs (ibuprofen, naproxen) - increase bleeding risk when combined with aspirin and Plavix 4, 7
- SSRIs/SNRIs - may increase bleeding risk 4
- Warfarin - substantially increases bleeding risk 1, 4
Bleeding Risk Awareness
Your dual antiplatelet therapy (Plavix + aspirin) already carries an inherent bleeding risk 5. While Flexeril doesn't add to this risk, you should:
- Report any unusual bleeding or bruising to your doctor
- Inform all healthcare providers (including dentists) that you're on dual antiplatelet therapy before any procedures 4
- Do not stop Plavix without consulting your cardiologist—premature discontinuation increases risk of heart attack, stroke, or stent thrombosis 4
Bottom Line
Take your Flexeril as prescribed without concern about interaction with Plavix and aspirin. The muscle relaxant works through a completely different mechanism and will not interfere with your cardiovascular protection. Continue your antiplatelet therapy exactly as directed by your cardiologist, and focus on avoiding the medications that truly do interact with Plavix, particularly omeprazole and esomeprazole.