PREMPHASE (PREMARIN;CYCRIN 14/14) vs PREMPRO (PREMARIN;CYCRIN)

Independent side-by-side comparison.

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

Attribute	PREMPHASE (PREMARIN;CYCRIN 14/14)	PREMPRO (PREMARIN;CYCRIN)
Rating	New	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	ESTROGENS, CONJUGATED AND MEDROXYPROGESTERONE ACETATE	ESTROGENS, CONJUGATED AND MEDROXYPROGESTERONE ACETATE
Manufacturer	Wyeth Pharms Inc	Wyeth Pharms Inc
Dosage forms	Tablet	Tablet
Drug class	—	—
Boxed warning	None	None

premphase (premarin;cycrin 14/14)prempro (premarin;cycrin)

Rating

New

Pharmacy pays

—

Type

Active ingredient

ESTROGENS, CONJUGATED AND MEDROXYPROGESTERONE ACETATE

Manufacturer

Wyeth Pharms Inc

Dosage forms

Tablet

Drug class

—

Boxed warning

None

Frequently asked questions

What is the difference between Premphase (Premarin;Cycrin 14/14) and Prempro (Premarin;Cycrin)?

Both Premphase (Premarin;Cycrin 14/14) and Prempro (Premarin;Cycrin) share the active ingredient Estrogens, Conjugated and Medroxyprogesterone Acetate.

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.