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AMRIX vs TONMYA

Independent side-by-side comparison.

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

Rating

56/100
New

Pharmacy pays

~$0.63 /30
~$0.63 /30

Type

RX
RX

Active ingredient

CYCLOBENZAPRINE HYDROCHLORIDE
CYCLOBENZAPRINE HYDROCHLORIDE

Manufacturer

Dosage forms

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

Treats

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

Frequently asked questions

Which is cheaper, Amrix or Tonmya?

Pharmacies pay about the same to acquire either one — roughly $0.63 for a 30-count supply, 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 Amrix and Tonmya?

Both Amrix and Tonmya share the active ingredient Cyclobenzaprine Hydrochloride.

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.