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ONA-MAST vs TEPANIL TEN-TAB

Independent side-by-side comparison.

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

Possible drug interaction. ONA-MAST and TEPANIL TEN-TAB 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

~$2.54 /30
~$7.96 /30

Type

RX
RX

Active ingredient

PHENTERMINE HYDROCHLORIDE
DIETHYLPROPION HYDROCHLORIDE

Manufacturer

Dosage forms

Capsule, Tablet
Tablet, extended release

Drug class

Sympathomimetic Amine Anorectic
Sympathomimetic Amine Anorectic

Boxed warning

None
None

Treats

Obesity
Obesity

Frequently asked questions

Which is cheaper, Ona-Mast or Tepanil Ten-Tab?

Ona-Mast costs pharmacies less to acquire — about $2.54 vs $7.96 for a 30-count supply, 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 Ona-Mast and Tepanil Ten-Tab?

Ona-Mast contains Phentermine Hydrochloride, while Tepanil Ten-Tab contains Diethylpropion 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.