DICLOFENAC POTASSIUM vs VOLTAREN

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 14, 2026·How we rate

Possible drug interaction. DICLOFENAC POTASSIUM and VOLTAREN are different prescription medicines. Combining or switching between them can cause interactions — talk to a pharmacist or prescriber before making changes. This page is not medical advice.

Attribute	DICLOFENAC POTASSIUM	VOLTAREN
Rating	New	70/100
Pharmacy pays	$0.36 /mL	$0.36 /mL
Type	RX	RX
Active ingredient	DICLOFENAC POTASSIUM	DICLOFENAC SODIUM
Manufacturer	Rk Pharma	Novartis
Dosage forms	Capsule, Powder, Tablet	Tablet, delayed release
Drug class	Nonsteroidal Anti-Inflammatory Drug	Nonsteroidal Anti-Inflammatory Drug
Boxed warning	Boxed warning	None
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 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)
Treats	Juvenile Arthritis, Rheumatoid Arthritis, Dysmenorrhea	Juvenile Arthritis, Rheumatoid Arthritis, Dysmenorrhea

diclofenac potassium voltaren

Rating

New

70/100

Pharmacy pays

$0.36 /mL

Type

Active ingredient

DICLOFENAC POTASSIUM

DICLOFENAC SODIUM

Manufacturer

Rk Pharma

Novartis

Dosage forms

Capsule, Powder, Tablet

Tablet, delayed release

Drug class

Nonsteroidal Anti-Inflammatory Drug

Boxed warning

None

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)

Treats

Juvenile Arthritis, Rheumatoid Arthritis, Dysmenorrhea

Frequently asked questions

Which is cheaper, Diclofenac Potassium or Voltaren?

Pharmacies pay about the same to acquire either one — roughly $0.36 per ml, per the CMS NADAC survey. That is not what you will be charged: your price is set by your insurer and the pharmacy, not by what the drug cost them.

What is the difference between Diclofenac Potassium and Voltaren?

Diclofenac Potassium contains Diclofenac Potassium, while Voltaren contains Diclofenac 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.