Source: FDA, National Drug Code (US) Revision Year: 2018
RYTHMOL SR (propafenone hydrochloride) is an antiarrhythmic drug supplied in extended-release capsules of 225, 325, and 425 mg for oral administration.
Chemically, propafenone hydrochloride is 2'-[2-hydroxy-3-(propylamino)-propoxy]-3-phenylpropiophenone hydrochloride, with a molecular weight of 377.92. The molecular formula is C21H27NO3•HCl.
Propafenone HCl has some structural similarities to beta-blocking agents. The structural formula of propafenone HCl is given below:
Propafenone HCl occurs as colorless crystals or white crystalline powder with a very bitter taste. It is slightly soluble in water (20°C), chloroform, and ethanol. RYTHMOL SR capsules are filled with cylindrical-shaped 2 × 2 mm microtablets containing propafenone and the following inactive ingredients: antifoam, gelatin, hypromellose, magnesium stearate, red iron oxide, shellac, sodium dodecyl sulfate, sodium lauryl sulfate, soy lecithin, and titanium dioxide.
| Dosage Forms and Strengths |
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RYTHMOL SR (propafenone HCl) capsules are supplied as white, opaque, hard gelatin capsules containing either 225 mg, 325 mg, or 425 mg of propafenone HCl. The 225-mg strength is imprinted in red with GS EUG followed by 225. The 325-mg strength is imprinted in red with GS F1Y followed by 325, and also has a single red band around ¾ of the circumference of the body. The 425-mg strength is imprinted in red with GS UY2 followed by 425, and also has 3 red bands around ¾ of the circumference of the body. |
| How Supplied | ||||||||
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RYTHMOL SR (propafenone HCl) capsules are supplied as white, opaque, hard gelatin capsules containing either 225 mg, 325 mg, or 425 mg of propafenone HCl. The 225-mg strength is imprinted in red with GS EUG followed by 225. The 325-mg strength is imprinted in red with GS F1Y followed by 325, and also has a single red band around ¾ of the circumference of the body. The 425-mg strength is imprinted in red with GS UY2 followed by 425, and also has 3 red bands around ¾ of the circumference of the body.
Trademark is owned by or licensed to the GSK group of companies. Manufactured for: GlaxoSmithKline, Research Triangle Park, NC 27709 |
| Drug | Countries | |
|---|---|---|
| RYTHMOL | Canada, France, United States, South Africa |
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