FINTEPLA vs ONA-MAST

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 12, 2026·How we rate

Possible drug interaction. FINTEPLA and ONA-MAST 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	FINTEPLA	ONA-MAST
Rating	70/100	New
Pharmacy pays	—	~$2.54 /30
Type	RX	RX
Active ingredient	FENFLURAMINE HYDROCHLORIDE	PHENTERMINE HYDROCHLORIDE
Manufacturer	Ucb Inc	Mast Mm
Dosage forms	Solution	Capsule, Tablet
Drug class	—	Sympathomimetic Amine Anorectic
Boxed warning	Boxed warning	None
Treats	Autistic Disorder, Bulimia, Obesity	Obesity

fintepla ona-mast

Rating

70/100

New

Pharmacy pays

—

~$2.54 /30

Type

Active ingredient

FENFLURAMINE HYDROCHLORIDE

PHENTERMINE HYDROCHLORIDE

Manufacturer

Ucb Inc

Mast Mm

Dosage forms

Solution

Capsule, Tablet

Drug class

—

Sympathomimetic Amine Anorectic

Boxed warning

None

Treats

Autistic Disorder, Bulimia, Obesity

Obesity

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Frequently asked questions

What is the difference between Fintepla and Ona-Mast?

Fintepla contains Fenfluramine Hydrochloride, while Ona-Mast contains Phentermine 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.