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NYDRAZID vs RIFAMPIN

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 15, 2026·How we rate

Possible drug interaction. NYDRAZID and RIFAMPIN 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.

Rating

72/100
66/100

Pharmacy pays

~$96.88 /30
~$20.59 /30

Type

RX
RX

Active ingredient

ISONIAZID
RIFAMPIN

Dosage forms

Tablet, Injectable
Capsule

Drug class

Antimycobacterial
Rifamycin Antibacterial

Boxed warning

None
None

Treats

Tuberculosis
Brucellosis, Haemophilus Infections, Legionnaires' Disease

Frequently asked questions

Which is better-rated, Nydrazid or Rifampin?

By our independent rating, Nydrazid scores higher — 3.6 vs 3.3 out of 5 for Rifampin. Ratings are based on FDA regulatory (recall-safety) data.

Which is cheaper, Nydrazid or Rifampin?

Rifampin 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 Rifampin?

Nydrazid contains Isoniazid, while Rifampin 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.