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DICLOFENAC SODIUM vs NAPROXEN SODIUM

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 23, 2026·How we rate

Rating

70/100
New

Pharmacy pays

$0.36 /mL
$0.06 /mL

Type

RX
OTC

Active ingredient

DICLOFENAC SODIUM
NAPROXEN SODIUM

Dosage forms

Solution, Drops, Topical, Tablet, delayed release, Tablet, extended release, Tablet, Kit
Capsule, Tablet, Tablet, extended release

Drug class

Nonsteroidal Anti-Inflammatory Drug
Nonsteroidal Anti-Inflammatory Drug

Boxed warning

Half-life

about 2 hours (terminal/elimination half-life; the label's table gives a mean of 2.3 hours in healthy adults, with wide variation between people — 48% coefficient of variation)
about 12 to 17 hours

Treats

Juvenile Arthritis, Rheumatoid Arthritis, Dysmenorrhea
Juvenile Arthritis, Rheumatoid Arthritis, Back Pain

Get naproxen sodium

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Where to buy

Buy over-the-counter from trusted retailers.

Frequently asked questions

Which is cheaper, Diclofenac Sodium or Naproxen Sodium?

Naproxen Sodium costs pharmacies less to acquire — about $0.06 vs $0.36 per ml, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Diclofenac Sodium and Naproxen Sodium?

Diclofenac Sodium contains Diclofenac Sodium, while Naproxen Sodium contains Naproxen Sodium — they have different active ingredients.

Ratings are based on FDA regulatory (recall-safety) data. This comparison is for general reference only — not medical advice. Always consult a licensed professional before choosing or switching a medication.