ENHERTU vs TOLAK

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 22, 2026·How we rate

Possible drug interaction. ENHERTU and TOLAK 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	ENHERTU	TOLAK
Rating	New	72/100
Pharmacy pays	—	$0.61 /mL
Type	RX	RX
Active ingredient	FAM-TRASTUZUMAB DERUXTECAN-NXKI	FLUOROURACIL
Manufacturer	Daiichi Sankyo Inc	Hill Dermaceuticals
Dosage forms	Injectable	Topical
Drug class	—	Nucleoside Metabolic Inhibitor
Boxed warning	Boxed warning	None
Treats	Breast Neoplasms, Gastrointestinal Neoplasms	Breast Neoplasms, Basal Cell Carcinoma, Colonic Neoplasms

enhertu tolak

Rating

New

72/100

Pharmacy pays

—

$0.61 /mL

Type

Active ingredient

FAM-TRASTUZUMAB DERUXTECAN-NXKI

FLUOROURACIL

Manufacturer

Daiichi Sankyo Inc

Hill Dermaceuticals

Dosage forms

Injectable

Topical

Drug class

—

Nucleoside Metabolic Inhibitor

Boxed warning

None

Treats

Breast Neoplasms, Gastrointestinal Neoplasms

Breast Neoplasms, Basal Cell Carcinoma, Colonic Neoplasms

Frequently asked questions

What is the difference between Enhertu and Tolak?

Enhertu contains Fam-Trastuzumab Deruxtecan-Nxki, while Tolak contains Fluorouracil — 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.