POLYCILLIN vs PRINCIPEN '250'

Independent side-by-side comparison.

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

Attribute	POLYCILLIN	PRINCIPEN '250'
Rating	New	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	AMPICILLIN/AMPICILLIN TRIHYDRATE	AMPICILLIN/AMPICILLIN TRIHYDRATE
Manufacturer	Bristol	Apothecon
Dosage forms	—	Capsule
Drug class	—	—
Boxed warning	None	None

polycillin principen '250'

Rating

New

Pharmacy pays

—

Type

Active ingredient

AMPICILLIN/AMPICILLIN TRIHYDRATE

Manufacturer

Bristol

Apothecon

Dosage forms

—

Capsule

Drug class

—

Boxed warning

None

Frequently asked questions

What is the difference between Polycillin and Principen '250'?

Both Polycillin and Principen '250' share the active ingredient Ampicillin/Ampicillin Trihydrate.

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.