BETAPACE vs QUINIDINE SULFATE

Independent side-by-side comparison.

Rated against independent regulatory sources·Last updated June 7, 2026·How we rate

Possible drug interaction. BETAPACE and QUINIDINE SULFATE 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	BETAPACE	QUINIDINE SULFATE
Rating	New	New
Pharmacy pays	~$2.96 /30	~$326.26 /30
Type	RX	RX
Active ingredient	SOTALOL HYDROCHLORIDE	QUINIDINE SULFATE
Manufacturer	Legacy Pharma	Halsey
Dosage forms	Tablet	Tablet
Drug class	Antiarrhythmic	Antiarrhythmic
Boxed warning	Boxed warning	None
Half-life	about 12 hours (the label gives a mean elimination half-life of 12 hours)	—
Treats	Atrial Fibrillation, Atrial Flutter, Supraventricular Tachycardia	Atrial Fibrillation, Atrial Flutter

betapace quinidine sulfate

Rating

New

Pharmacy pays

~$2.96 /30

~$326.26 /30

Type

Active ingredient

SOTALOL HYDROCHLORIDE

QUINIDINE SULFATE

Manufacturer

Legacy Pharma

Halsey

Dosage forms

Tablet

Drug class

Antiarrhythmic

Boxed warning

None

Half-life

about 12 hours (the label gives a mean elimination half-life of 12 hours)

—

Treats

Atrial Fibrillation, Atrial Flutter, Supraventricular Tachycardia

Atrial Fibrillation, Atrial Flutter

Frequently asked questions

Which is cheaper, Betapace or Quinidine Sulfate?

Betapace costs pharmacies less to acquire — about $2.96 vs $326.26 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 Betapace and Quinidine Sulfate?

Betapace contains Sotalol Hydrochloride, while Quinidine Sulfate contains Quinidine Sulfate — 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.