BENZAMYCIN vs ORTHO-NOVUM 10-21

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated October 6, 2026·How we rate

Possible drug interaction. BENZAMYCIN and ORTHO-NOVUM 10-21 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	BENZAMYCIN	ORTHO-NOVUM 10-21
Rating	74/100	New
Pharmacy pays	$0.05 /g	—
Type	RX	RX
Active ingredient	BENZOYL PEROXIDE AND ERYTHROMYCIN	MESTRANOL AND NORETHINDRONE
Manufacturer	Valeant Pharm Intl	Ortho Mcneil Pharm
Dosage forms	Kit	Tablet
Drug class	—	—
Boxed warning	None	None
Half-life	—	about 8 hours

benzamycin ortho-novum 10-21

Rating

74/100

New

Pharmacy pays

$0.05 /g

—

Type

Active ingredient

BENZOYL PEROXIDE AND ERYTHROMYCIN

MESTRANOL AND NORETHINDRONE

Manufacturer

Valeant Pharm Intl

Ortho Mcneil Pharm

Dosage forms

Kit

Tablet

Drug class

—

Boxed warning

None

Half-life

—

about 8 hours

Frequently asked questions

What is the difference between Benzamycin and Ortho-Novum 10-21?

Benzamycin contains Benzoyl Peroxide and Erythromycin, while Ortho-Novum 10-21 contains Mestranol and Norethindrone — 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.