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NORFLEX vs TONMYA

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Possible drug interaction. NORFLEX and TONMYA 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.

Rating

New
New

Pharmacy pays

$0.48 /mL
~$0.63 /30

Type

RX
RX

Active ingredient

ORPHENADRINE CITRATE
CYCLOBENZAPRINE HYDROCHLORIDE

Manufacturer

Dosage forms

Tablet, extended release, Injectable
Tablet, orally disintegrating

Drug class

Muscle Relaxant
Muscle Relaxant

Boxed warning

None
None

Half-life

about 18 hours (range roughly 8 to 37 hours) for the standard immediate-release tablet in typical adults

Treats

Muscle Cramp, Muscle Rigidity, Myositis
Muscle Cramp, Muscle Rigidity, Muscle Spasticity

Frequently asked questions

What is the difference between Norflex and Tonmya?

Norflex contains Orphenadrine Citrate, while Tonmya contains Cyclobenzaprine Hydrochloride — 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.