CARDURA XL vs REGITINE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 21, 2026·How we rate

Possible drug interaction. CARDURA XL and REGITINE 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	CARDURA XL	REGITINE
Rating	68/100	70/100
Pharmacy pays	~$2.57 /30	—
Type	RX	RX
Active ingredient	DOXAZOSIN MESYLATE	PHENTOLAMINE MESYLATE
Manufacturer	Viatris	Novartis
Dosage forms	Tablet, extended release	Injectable
Drug class	Alpha-Adrenergic Blocker	Alpha-Adrenergic Blocker
Boxed warning	None	None
Half-life	about 22 hours (terminal/beta phase)	—
Treats	Hypertension, Prostatic Hyperplasia, Urinary Retention	Extravasation of Diagnostic and Therapeutic Materials, Malignant Hypertension, Necrosis

cardura xl regitine

Rating

68/100

70/100

Pharmacy pays

~$2.57 /30

—

Type

Active ingredient

DOXAZOSIN MESYLATE

PHENTOLAMINE MESYLATE

Manufacturer

Viatris

Novartis

Dosage forms

Tablet, extended release

Injectable

Drug class

Alpha-Adrenergic Blocker

Boxed warning

None

Half-life

about 22 hours (terminal/beta phase)

—

Treats

Hypertension, Prostatic Hyperplasia, Urinary Retention

Extravasation of Diagnostic and Therapeutic Materials, Malignant Hypertension, Necrosis

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Frequently asked questions

Which is better-rated, Cardura XL or Regitine?

By our independent rating, Regitine scores higher — 3.5 vs 3.4 out of 5 for Cardura XL. Ratings are based on FDA regulatory (recall-safety) data.

What is the difference between Cardura XL and Regitine?

Cardura XL contains Doxazosin Mesylate, while Regitine contains Phentolamine Mesylate — 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.