BICILLIN L-A vs DYNAPEN

Independent side-by-side comparison.

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

Possible drug interaction. BICILLIN L-A and DYNAPEN 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	BICILLIN L-A	DYNAPEN
Rating	New	New
Pharmacy pays	—	~$23.69 /30
Type	RX	RX
Active ingredient	PENICILLIN G BENZATHINE	DICLOXACILLIN SODIUM
Manufacturer	Wyeth Ayerst	Apothecon
Dosage forms	Injectable	—
Drug class	Penicillin-Class Antibacterial	Penicillin-Class Antibacterial
Boxed warning	None	None
Treats	Actinomycosis, Anthrax, Botulism	Cellulitis, Osteomyelitis, Postoperative Complications

bicillin l-a dynapen

Rating

New

Pharmacy pays

—

~$23.69 /30

Type

Active ingredient

PENICILLIN G BENZATHINE

DICLOXACILLIN SODIUM

Manufacturer

Wyeth Ayerst

Apothecon

Dosage forms

Injectable

—

Drug class

Penicillin-Class Antibacterial

Boxed warning

None

Treats

Actinomycosis, Anthrax, Botulism

Cellulitis, Osteomyelitis, Postoperative Complications

Get dynapen

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Frequently asked questions

What is the difference between Bicillin L-A and Dynapen?

Bicillin L-A contains Penicillin G Benzathine, while Dynapen contains Dicloxacillin Sodium — 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.