DYNAPEN vs PROSTAPHLIN

Independent side-by-side comparison.

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

Possible drug interaction. DYNAPEN and PROSTAPHLIN 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	DYNAPEN	PROSTAPHLIN
Rating	New	New
Pharmacy pays	~$23.69 /30	—
Type	RX	RX
Active ingredient	DICLOXACILLIN SODIUM	OXACILLIN SODIUM
Manufacturer	Apothecon	Apothecon
Dosage forms	—	Capsule
Drug class	Penicillin-Class Antibacterial	Penicillin-Class Antibacterial
Boxed warning	None	None
Treats	Cellulitis, Osteomyelitis, Postoperative Complications	Cellulitis, Bacterial Endocarditis, Osteomyelitis

dynapen prostaphlin

Rating

New

Pharmacy pays

~$23.69 /30

—

Type

Active ingredient

DICLOXACILLIN SODIUM

OXACILLIN SODIUM

Manufacturer

Apothecon

Dosage forms

—

Capsule

Drug class

Penicillin-Class Antibacterial

Boxed warning

None

Treats

Cellulitis, Osteomyelitis, Postoperative Complications

Cellulitis, Bacterial Endocarditis, Osteomyelitis

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Frequently asked questions

What is the difference between Dynapen and Prostaphlin?

Dynapen contains Dicloxacillin Sodium, while Prostaphlin contains Oxacillin 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.