Comparison Table: Naproxen vs Ketoprofen

CategoryNaproxenKetoprofen
1. Drug ClassNSAID (Nonsteroidal Anti-inflammatory Drug)NSAID (Nonsteroidal Anti-inflammatory Drug)
2. Mechanism of ActionInhibits COX-1 and COX-2, reducing prostaglandin synthesisSame mechanism – inhibits COX-1 and COX-2
3. Common Brand NamesAleve, NaprosynOrudis, Oruvail, Ketoflam
4. Available FormsTablet, capsule, suspension, delayed-release, extended-releaseCapsule, extended-release, topical gel, injection
5. Half-LifeLong (12–17 hours) – allows twice daily dosingShorter (2–4 hours) – may require more frequent dosing
6. Typical Dosing FrequencyEvery 8–12 hoursEvery 6–8 hours
7. Onset of ActionSlower onsetFaster onset
8. Pain Relief PotencyModerate to highModerate to high (comparable to naproxen)
9. Anti-inflammatory PowerStrongStrong
10. Common IndicationsArthritis, menstrual pain, tendonitis, fever, muscle achesArthritis, pain, menstrual cramps, post-surgical pain
11. ContraindicationsGI bleeding, severe heart/kidney/liver disease, NSAID allergySame as naproxen
12. Typical Adult Dose250–500 mg every 12 hours (max 1500 mg/day)25–50 mg every 6–8 hours (max 300 mg/day)
13. GI Side EffectsGastric irritation, ulcer, nauseaSlightly more irritating to GI tract than naproxen
14. Cardiovascular RiskModerate (less than some NSAIDs like diclofenac)Slightly higher cardiovascular risk compared to naproxen
15. Renal ImpactMay reduce kidney function with long-term useSimilar renal effects
16. Topical OptionNoYes (topical gels/sprays available)
17. Use in PregnancyAvoid in 3rd trimesterAvoid in 3rd trimester
18. COX-2 SelectivityNon-selectiveNon-selective
19. Drug InteractionsAnticoagulants, antihypertensives, lithiumSame interactions
20. Cost and AvailabilityWidely available and generally cheaperLess widely available, may be more expensive

Indications (Both)

  • Osteoarthritis

  • Rheumatoid arthritis

  • Ankylosing spondylitis

  • Musculoskeletal pain

  • Menstrual cramps (dysmenorrhea)

  • Postoperative pain

  • Fever (off-label)


Contraindications (Both)

  • Hypersensitivity to NSAIDs

  • History of asthma or urticaria with NSAID use

  • Active peptic ulcer or GI bleeding

  • Severe heart failure

  • Late-stage pregnancy (3rd trimester)

  • Severe liver or kidney disease


💊 Typical Dosage (Adults)

DrugImmediate-ReleaseExtended-Release
Naproxen250–500 mg every 12 hours (Max: 1500 mg/day)750–1000 mg once daily
Ketoprofen25–50 mg every 6–8 hours (Max: 300 mg/day)200 mg once daily (Max: 200 mg/day)

⚠️ Warning Signs (Both)

Seek medical attention if you experience:

  • Black or bloody stools (GI bleeding)

  • Chest pain, shortness of breath (heart attack)

  • Swelling, rapid weight gain (kidney issues)

  • Severe abdominal pain

  • Skin rash or blisters (Stevens-Johnson Syndrome)

  • Yellowing of the skin or eyes (liver damage)

  • High blood pressure or headaches

  • Ringing in the ears or hearing changes


🆚 Which One is Best and Safer?

CriteriaBetter ChoiceReason
ConvenienceNaproxenLonger half-life = less frequent dosing
GI TolerabilityNaproxenSlightly less gastric irritation
Topical Use OptionKetoprofenAvailable as gel/patch – reduces systemic side effects
Cost & AccessNaproxenWidely available, lower cost
Rapid Pain ReliefKetoprofenFaster onset

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