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Gabapentin and Naproxen Interaction

Drug interaction information between Gabapentin and Naproxen.

Gabapentin and Naproxen have a documented minor interaction in FDA labeling.

FDA drug labeling documents a minor-severity interaction between Gabapentin and Naproxen. Major interactions are generally avoided, moderate ones may need monitoring or a dose adjustment, and minor ones are usually low-risk. This page shows the documented mechanism and guidance. Label-documented interactions are not a complete safety review, so always confirm your own medications with a pharmacist or doctor. Educational information, not medical advice.

Drug A

Gabapentin

Anticonvulsant / Nerve Pain Agent

Drug B

Naproxen

Nonsteroidal Anti-Inflammatory Drug (NSAID)

How They Interact

Taking naproxen can cause the body to absorb a slightly higher amount of gabapentin than it normally would. This could potentially increase the effects or side effects of the gabapentin.

What To Do

Your doctor may need to monitor you for increased side effects if you take these medications at the same time.

FDA Label Information

Naproxen Coadministration (N=18) of naproxen sodium capsules (250 mg) with Gabapentin (125 mg) appears to increase the amount of gabapentin absorbed by 12% to 15%. Gabapentin had no effect on naproxen pharmacokinetic parameters.

Frequently Asked Questions

Can I take Gabapentin and Naproxen together?

This is a minor interaction. Your doctor may need to monitor you for increased side effects if you take these medications at the same time.

How serious is the interaction between Gabapentin and Naproxen?

This interaction is classified as "minor" severity by the FDA. Minor interactions are unlikely to cause significant problems but should still be mentioned to your healthcare provider.

Why do Gabapentin and Naproxen interact?

Taking naproxen can cause the body to absorb a slightly higher amount of gabapentin than it normally would. This could potentially increase the effects or side effects of the gabapentin.

Understanding the Gabapentin and Naproxen Interaction

FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Gabapentin belongs to the Anticonvulsant / Nerve Pain Agent class and Naproxen belongs to the Nonsteroidal Anti-Inflammatory Drug (NSAID) class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: Taking naproxen can cause the body to absorb a slightly higher amount of gabapentin than it normally would. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.

Context around a specific patient determines real-world impact. Gabapentin has 19 total documented interactions on file in this dataset, and Naproxen has 23. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: Your doctor may need to monitor you for increased side effects if you take these medications at the same time. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.

An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Gabapentin or Naproxen based on a web page, speak with your prescriber or pharmacist before making any change.

Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. Always consult your healthcare provider about drug interactions.