ACULAR LS vs ALAMAST

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated August 23, 2026·How we rate

Possible drug interaction. ACULAR LS and ALAMAST 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	ACULAR LS	ALAMAST
Rating	72/100	New
Pharmacy pays	—	—
Type	RX	RX
Active ingredient	KETOROLAC TROMETHAMINE	PEMIROLAST POTASSIUM
Manufacturer	Abbvie	Santen
Dosage forms	Drops	Drops
Drug class	Nonsteroidal Anti-Inflammatory Drug	—
Boxed warning	None	None
Half-life	about 5 to 6 hours	—
Treats	Allergic Conjunctivitis, Inflammation, Pain	Allergic Conjunctivitis

acular ls alamast

Rating

72/100

New

Pharmacy pays

—

Type

Active ingredient

KETOROLAC TROMETHAMINE

PEMIROLAST POTASSIUM

Manufacturer

Abbvie

Santen

Dosage forms

Drops

Drug class

Nonsteroidal Anti-Inflammatory Drug

—

Boxed warning

None

Half-life

about 5 to 6 hours

—

Treats

Allergic Conjunctivitis, Inflammation, Pain

Allergic Conjunctivitis

Frequently asked questions

What is the difference between Acular Ls and Alamast?

Acular Ls contains Ketorolac Tromethamine, while Alamast contains Pemirolast Potassium — 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.