Celebrex vs. Diclofenac
See how Celebrex and Diclofenac compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Celebrex is a COX-2 selective NSAID linked to fewer stomach ulcers than diclofenac, though both carry the same boxed warnings for heart attack, stroke, and stomach bleeding.
Both drugs treat osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, acute pain, and menstrual cramps, but only Celebrex has an approved dose for children with juvenile arthritis.
Diclofenac comes in more forms, including an over-the-counter topical gel, while Celebrex is only available as an oral capsule or oral solution.
Celebrex vs. Diclofenac Drug Summary
Celebrex
Celebrex (celecoxib) is a COX-2 selective NSAID used to relieve pain and inflammation from osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, acute pain, and menstrual cramps. It's taken as an oral capsule, usually once or twice daily depending on the condition being treated.
Diclofenac
Diclofenac is a non-selective NSAID used for the same core conditions: osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, acute pain, and menstrual cramps. It's taken as a delayed-release oral tablet, usually two to three times daily depending on the dose.
Celebrex vs. Diclofenac Side Effects
Celebrex
Diclofenac
Celebrex vs. Diclofenac Dosage
Celebrex
Diclofenac
| STAGE | DOSE | WHEN |
| Starting dose | 200 mg once daily | At the start |
| Maximum dose | 200 mg twice daily | Day 2 onward |
| Dose changes | 5 increases | Every day |
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg two-three x daily | At the start |
| Maximum dose | 50 mg two-three x daily | Same as starting |
| Dose changes | None | Fixed dose |
Celebrex
| STAGE | DOSE | WHEN |
| Starting dose | 200 mg once daily | At the start |
| Maximum dose | 200 mg twice daily | Day 2 onward |
| Dose changes | 5 increases | Every day |
Diclofenac
| STAGE | DOSE | WHEN |
| Starting dose | 50 mg two-three x daily | At the start |
| Maximum dose | 50 mg two-three x daily | Same as starting |
| Dose changes | None | Fixed dose |
Celebrex vs. Diclofenac Indications
Celebrex
Celebrex is FDA-approved for osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, acute pain, and primary dysmenorrhea. It also has an approved pediatric dose for juvenile rheumatoid arthritis in children 2 years and older. Off-label, it's sometimes used for other inflammatory pain conditions.
Osteoarthritis
Rheumatoid arthritis
Ankylosing spondylitis
Acute pain
Primary dysmenorrhea (menstrual cramps)
Diclofenac
Diclofenac is FDA-approved for osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, mild to moderate acute pain, and primary dysmenorrhea. It is not approved for use in children, and topical and other formulations carry separate approvals. Off-label use for other pain conditions is common.
Osteoarthritis
Rheumatoid arthritis
Ankylosing spondylitis
Mild to moderate acute pain
Primary dysmenorrhea (menstrual cramps)
Celebrex vs. Diclofenac Pros and Cons
Celebrex
Celebrex's COX-2 selectivity is linked to fewer GI ulcers and less bleeding than non-selective NSAIDs, and it's the only one of the two approved for children with juvenile arthritis. It's typically covered by insurance and Medicare as a generic, though it only comes as an oral capsule or solution.
Pros
COX-2 selective action means fewer stomach ulcers and less GI bleeding than non-selective NSAIDs like diclofenac.
Approved for juvenile rheumatoid arthritis in children 2 and older, an option diclofenac doesn't have.
Doesn't interfere with platelet function the way diclofenac does, which may matter for people on blood thinners.
Cons
Only available as an oral capsule or oral solution, with no topical or injectable version.
People who poorly metabolize the CYP2C9 enzyme may need a lower starting dose.
Contains a sulfonamide group, so it should be avoided by people with a sulfa drug allergy.
Diclofenac
Diclofenac's long track record and multiple formulations, including an over-the-counter topical gel, make it a flexible option for localized pain. As a non-selective NSAID, it carries a higher combined rate of GI symptoms and isn't approved for use in children.
Pros
Available in oral, topical gel, ophthalmic, and injectable forms, including an over-the-counter gel.
Doesn't require special dose adjustments for CYP2C9 poor metabolizers the way Celebrex does.
Generic and widely used since the late 1980s, one of the most commonly prescribed NSAIDs worldwide.
Cons
Carries a higher combined rate of GI symptoms (about 20%) than Celebrex's individual reaction rates.
Not approved for use in children; safety and effectiveness haven't been established.
Inhibits platelet function like typical NSAIDs, which may raise bleeding risk for people on blood thinners.
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