PENBRITIN-S vs POLYCILLIN-N

Independent side-by-side comparison.

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

Attribute	PENBRITIN-S	POLYCILLIN-N
Rating	New	New
Pharmacy pays	~$13.42 /30	~$13.42 /30
Type	RX	RX
Active ingredient	AMPICILLIN SODIUM	AMPICILLIN SODIUM
Manufacturer	Wyeth Ayerst	Bristol
Dosage forms	Injectable	Injectable
Drug class	Penicillin-Class Antibacterial	Penicillin-Class Antibacterial
Boxed warning	None	None
Treats	Actinomycosis, Human Bites, Bacillary Dysentery	Actinomycosis, Human Bites, Bacillary Dysentery

penbritin-s polycillin-n

Rating

New

Pharmacy pays

~$13.42 /30

Type

Active ingredient

AMPICILLIN SODIUM

Manufacturer

Wyeth Ayerst

Bristol

Dosage forms

Injectable

Drug class

Penicillin-Class Antibacterial

Boxed warning

None

Treats

Actinomycosis, Human Bites, Bacillary Dysentery

Frequently asked questions

Which is cheaper, Penbritin-S or Polycillin-N?

Pharmacies pay about the same to acquire either one — roughly $13.42 for a 30-count supply, per the CMS NADAC survey. That is not what you will be charged: your price is set by your insurer and the pharmacy, not by what the drug cost them.

What is the difference between Penbritin-S and Polycillin-N?

Both Penbritin-S and Polycillin-N share the active ingredient Ampicillin Sodium.

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.