NYDRAZID vs RIFADIN

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 14, 2026·How we rate

Possible drug interaction. NYDRAZID and RIFADIN 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	NYDRAZID	RIFADIN
Rating	72/100	70/100
Pharmacy pays	~$96.88 /30	~$20.59 /30
Type	RX	RX
Active ingredient	ISONIAZID	RIFAMPIN
Manufacturer	Bristol Myers Squibb	Sanofi Aventis US
Dosage forms	Tablet, Injectable	Injectable
Drug class	Antimycobacterial	Rifamycin Antibacterial
Boxed warning	None	None
Treats	Tuberculosis	Brucellosis, Haemophilus Infections, Legionnaires' Disease

nydrazid rifadin

Rating

72/100

70/100

Pharmacy pays

~$96.88 /30

~$20.59 /30

Type

Active ingredient

ISONIAZID

RIFAMPIN

Manufacturer

Bristol Myers Squibb

Sanofi Aventis US

Dosage forms

Tablet, Injectable

Injectable

Drug class

Antimycobacterial

Rifamycin Antibacterial

Boxed warning

None

Treats

Tuberculosis

Brucellosis, Haemophilus Infections, Legionnaires' Disease

Frequently asked questions

Which is better-rated, Nydrazid or Rifadin?

By our independent rating, Nydrazid scores higher — 3.6 vs 3.5 out of 5 for Rifadin. Ratings are based on FDA regulatory (recall-safety) data.

Which is cheaper, Nydrazid or Rifadin?

Rifadin costs pharmacies less to acquire — about $20.59 vs $96.88 for a 30-count supply, per the CMS NADAC survey. That gap is in the pharmacy's cost of goods, not necessarily in what you pay: your price is set afterwards by your insurer and the pharmacy.

What is the difference between Nydrazid and Rifadin?

Nydrazid contains Isoniazid, while Rifadin contains Rifampin — 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.