BETHKIS vs COLY-MYCIN M

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 11, 2026·How we rate

Possible drug interaction. BETHKIS and COLY-MYCIN M 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	BETHKIS	COLY-MYCIN M
Rating	70/100	New
Pharmacy pays	$1.07 /mL	~$490.36 /30
Type	RX	RX
Active ingredient	TOBRAMYCIN	COLISTIMETHATE SODIUM
Manufacturer	Chiesi	Ph Health
Dosage forms	Solution	Injectable
Drug class	Aminoglycoside Antibacterial	Polymyxin-Class Antibacterial
Boxed warning	None	None
Treats	Infectious Bone Diseases, Central Nervous System Infections, Pseudomonas Infections	Escherichia Coli Infections, Klebsiella Infections, Pseudomonas Infections

bethkis coly-mycin m

Rating

70/100

New

Pharmacy pays

$1.07 /mL

~$490.36 /30

Type

Active ingredient

TOBRAMYCIN

COLISTIMETHATE SODIUM

Manufacturer

Chiesi

Ph Health

Dosage forms

Solution

Injectable

Drug class

Aminoglycoside Antibacterial

Polymyxin-Class Antibacterial

Boxed warning

None

Treats

Infectious Bone Diseases, Central Nervous System Infections, Pseudomonas Infections

Escherichia Coli Infections, Klebsiella Infections, Pseudomonas Infections

Frequently asked questions

What is the difference between Bethkis and Coly-Mycin M?

Bethkis contains Tobramycin, while Coly-Mycin M contains Colistimethate Sodium — 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.