EFAVIRENZ vs VIRAMUNE XR

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 20, 2026·How we rate

Possible drug interaction. EFAVIRENZ and VIRAMUNE XR 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	EFAVIRENZ	VIRAMUNE XR
Rating	New	72/100
Pharmacy pays	~$42.28 /30	~$4.55 /30
Type	RX	RX
Active ingredient	EFAVIRENZ	NEVIRAPINE
Manufacturer	Matrix Labs Ltd	Boehringer Ingelheim
Dosage forms	Capsule, Tablet	Tablet, extended release
Drug class	Human Immunodeficiency Virus 1 Non-Nucleoside Analog Reverse Transcriptase Inhibitor	Human Immunodeficiency Virus 1 Non-Nucleoside Analog Reverse Transcriptase Inhibitor
Boxed warning	None	None
Treats	Acquired Immunodeficiency Syndrome	Acquired Immunodeficiency Syndrome, Hiv Infections

efavirenz viramune xr

Rating

New

72/100

Pharmacy pays

~$42.28 /30

~$4.55 /30

Type

Active ingredient

EFAVIRENZ

NEVIRAPINE

Manufacturer

Matrix Labs Ltd

Boehringer Ingelheim

Dosage forms

Capsule, Tablet

Tablet, extended release

Drug class

Human Immunodeficiency Virus 1 Non-Nucleoside Analog Reverse Transcriptase Inhibitor

Boxed warning

None

Treats

Acquired Immunodeficiency Syndrome

Acquired Immunodeficiency Syndrome, Hiv Infections

Frequently asked questions

Which is cheaper, Efavirenz or Viramune XR?

Viramune XR costs pharmacies less to acquire — about $4.55 vs $42.28 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 Efavirenz and Viramune XR?

Efavirenz contains Efavirenz, while Viramune XR contains Nevirapine — 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.