DIDREX vs PHENDIMETRAZINE TARTRATE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 11, 2026·How we rate

Possible drug interaction. DIDREX and PHENDIMETRAZINE TARTRATE 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	DIDREX	PHENDIMETRAZINE TARTRATE
Rating	64/100	New
Pharmacy pays	—	~$3.86 /30
Type	RX	RX
Active ingredient	BENZPHETAMINE HYDROCHLORIDE	PHENDIMETRAZINE TARTRATE
Manufacturer	Pfizer	Kv Pharm
Dosage forms	Tablet	Capsule, extended release, Tablet
Drug class	Sympathomimetic Amine Anorectic	Sympathomimetic Amine Anorectic
Boxed warning	None	None
Treats	Obesity	Obesity

didrex phendimetrazine tartrate

Rating

64/100

New

Pharmacy pays

—

~$3.86 /30

Type

Active ingredient

BENZPHETAMINE HYDROCHLORIDE

PHENDIMETRAZINE TARTRATE

Manufacturer

Pfizer

Kv Pharm

Dosage forms

Tablet

Capsule, extended release, Tablet

Drug class

Sympathomimetic Amine Anorectic

Boxed warning

None

Treats

Obesity

Frequently asked questions

What is the difference between Didrex and Phendimetrazine Tartrate?

Didrex contains Benzphetamine Hydrochloride, while Phendimetrazine Tartrate contains Phendimetrazine Tartrate — 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.