BLOCADREN vs LOPRESSOR

Independent side-by-side comparison.

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

Possible drug interaction. BLOCADREN and LOPRESSOR 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	BLOCADREN	LOPRESSOR
Rating	70/100	New
Pharmacy pays	$1.06 /mL	~$0.58 /30
Type	RX	RX
Active ingredient	TIMOLOL MALEATE	METOPROLOL TARTRATE
Manufacturer	Merck	Rubicon Research
Dosage forms	Tablet	Solution, Tablet
Drug class	Beta-Adrenergic Blocker	Beta-Adrenergic Blocker
Boxed warning	None	None
Half-life	—	about 3 to 4 hours
Treats	Angina Pectoris, Open-Angle Glaucoma, Heart Failure	Angina Pectoris, Atrial Fibrillation, Atrial Flutter

blocadren lopressor

Rating

70/100

New

Pharmacy pays

$1.06 /mL

~$0.58 /30

Type

Active ingredient

TIMOLOL MALEATE

METOPROLOL TARTRATE

Manufacturer

Merck

Rubicon Research

Dosage forms

Tablet

Solution, Tablet

Drug class

Beta-Adrenergic Blocker

Boxed warning

None

Half-life

—

about 3 to 4 hours

Treats

Angina Pectoris, Open-Angle Glaucoma, Heart Failure

Angina Pectoris, Atrial Fibrillation, Atrial Flutter

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Frequently asked questions

What is the difference between Blocadren and Lopressor?

Blocadren contains Timolol Maleate, while Lopressor contains Metoprolol Tartrate — 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.