331 ETH (Propafenone Hydrochloride 150 mg)
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; ventricular tachycardia; atrial flutter; wolff-parkinson-white syndrome 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
- Side effects
- Drug interactions
- Dosage information
- During pregnancy or Breastfeeding
- Reviews (66)
- Drug images
- Pricing & coupons
- En español
- Drug class: group I antiarrhythmics
Patient resources
- Drug Information
- Propafenone (Advanced Reading)
- Propafenone Tablets
- Propafenone Sustained-Release Capsules
- Other brands
- Rythmol, Rythmol SR
Professional resources
Related treatment guides
Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.