331 ETH Pill - white round, 9mm
Pill with imprint 331 ETH is White, Round and has been identified as Propafenone Hydrochloride 150 mg. It is supplied by Ethex Corporation.
Propafenone is used in the treatment of Atrial Fibrillation; Atrial Flutter; Wolff-Parkinson-White Syndrome; Ventricular Tachycardia and belongs to the drug class group I antiarrhythmics. Risk cannot be ruled out during pregnancy. Propafenone 150 mg is not a controlled substance under the Controlled Substances Act (CSA).
Images for 331 ETH

Propafenone Hydrochloride
- Imprint
- 331 ETH
- Strength
- 150 mg
- Color
- White
- Size
- 9.00 mm
- Shape
- Round
- Availability
- Prescription only
- Drug Class
- Group I antiarrhythmics
- Pregnancy Category
- C - Risk cannot be ruled out
- CSA Schedule
- Not a controlled drug
- Labeler / Supplier
- Ethex Corporation
- National Drug Code (NDC)
- 58177-0331 (Discontinued)
More about propafenone
- Check interactions
- Compare alternatives
- Pricing & coupons
- Reviews (71)
- Drug images
- Side effects
- Dosage information
- During pregnancy
- Drug class: group I antiarrhythmics
- Breastfeeding
- En español
Patient resources
Other brands
Professional resources
Other brands
Related treatment guides
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.