medicationsRythmol Sr

Rythmol SR Coupon & Prices

Is your Rythmol SR medication too expensive?

Get notified when Rythmol SR medication becomes available.

Get Started Now
Medically reviewed by  Jamie Winn, PharmD

Is NiceRx a Rythmol SR coupon provider?

We are a service provider that helps eligible individuals access patient assistance programs. That means that we do not offer printable Rythmol SR manufacturer coupons, Rythmol SR discounts, or free Rythmol SR samples. We are not a Rythmol SR coupon provider or Rythmol SR discount card. Our service extends to assisting eligible individuals to access the medications they need through patient assistance programs.

Rythmol SR patient assistance program

Patient assistance programs are typically sponsored by pharmaceutical companies and provide free or discounted medications to individuals with low income who are uninsured or under-insured and meet the eligibility criteria that vary by program. There are currently no known patient assistance programs for this medication.

How much does Rythmol SR cost without insurance?

Rythmol SR cost without insurance will vary depending on where you buy it. As a guide, Rythmol SR oral capsules, extended-release 225 mg usually cost $780 for 60 capsules.

How much does Rythmol SR cost with insurance?

The copay for Rythmol SR with insurance depends on the terms of your healthcare plan. To find out how much this is, your healthcare provider or pharmacist will be able to calculate your copay with your current insurance.

What is Rythmol SR?

Rythmol SR is an FDA (U.S. Food and Drug Administration) approved medication manufactured by GSK. This medication is used to help prevent certain types of serious irregular heartbeat (such as paroxysmal supraventricular tachycardia and atrial fibrillation). It is used to help maintain a regular, steady heartbeat.

Rythmol SR is an antiarrhythmic indicated to prolong the time to recurrence of symptomatic atrial fibrillation (AF) in patients with episodic AF who do not have structural heart disease.

Rythmol SR is used in patients with permanent atrial fibrillation or with atrial flutter or PSVT that has not been evaluated. In patients with atrial fibrillation and atrial flutter, use Rythmol SR with drugs that increase the atrioventricular nodal refractory period. The effect of propafenone on mortality is not known.

What doses of Rythmol SR are available?

Rythmol SR is available in extended-release capsule form, in the following doses: 225 mg, 325 mg, and 425 mg.

Initiate therapy with 225 mg given every 12 hours. The dosage may be increased at a minimum of 5-day intervals to 325 mg every 12 hours and, if necessary, to 425 mg every 12 hours. Dose reduction should be considered in patients with hepatic impairment, significant widening of the QRS complex, or second or third-degree AV block.

Always speak with your healthcare provider for medical advice about any changes to your dose so they can monitor and evaluate your condition.

Rythmol SR active ingredients

Rythmol SR contains propafenone as the active ingredient.

Rythmol SR side effects

The most common side effects of Rythmol SR in clinical trials include:

  • Dizziness
  • Palpitations
  • Chest pain
  • Dyspnea
  • Taste disturbance
  • Nausea
  • Tiredness
  • Anxiety
  • Constipation
  • Upper respiratory tract infection, sore throat, trouble breathing
  • Edema
  • Influenza

In rare instances, Rythmol SR can cause more serious side effects. These can include:

  • New or worsened abnormal heartbeats (arrhythmias), that can cause sudden death or be life-threatening – your doctor may do an electrocardiogram (ECG or EKG) before and during treatment to check your heart for these problems
  • Treatment may unmask Brugada or Brugada-like Syndrome
  • Overt heart failure
  • Dose-related first degree AV block or other conduction disturbances – do not give to patients with conduction defects in absence of a pacemaker
  • Agranulocytosis

Your doctor will assess the benefits of using Rythmol SR against your risk of side effects. Patients are encouraged to report negative side effects or adverse reactions of Rythmol SR to the FDA. Visit, or call 1-800-FDA-1088.

Rythmol SR drug interactions

Rythmol SR can interact with other medications. These include:

  • Other antiarrhythmic agents or drugs that prolong the QT interval – amiodarone, dofetilide, flecainide, pimozide, procainamide, quinidine, macrolide antibiotics, and certain quinolone antibiotics
  • Avoid simultaneous use with both a cytochrome P450 2D6 inhibitor and a 3A4 inhibitor
  • Beta-blockers – sotalol, metoprolol, propranolol
  • Digoxin
  • Warfarin
  • Desipramine
  • Ketoconazole
  • Phenytoin
  • Rifampin
  • Grapefruit or drinking grapefruit juice

This list is not exhaustive and other prescription drugs may interact with Rythmol SR. Tell your doctor about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

Rythmol SR contraindications

You should not use Rythmol SR if you:

  • Are allergic to the active ingredient propafenone hydrochloride
  • Are allergic to any of the other ingredients in Rythmol SR
  • Have heart failure
  • Have cardiogenic shock
  • Have sinoatrial, atrioventricular, and intraventricular disorders of impulse generation and/or conduction in the absence of a pacemaker
  • Have known Brugada Syndrome
  • Have bradycardia (slower than normal heart rhythm)
  • Have marked hypotension (low blood pressure)
  • Have bronchospastic disorders and severe obstructive pulmonary disease
  • Have electrolyte imbalance
  • Are pregnant or are planning to become pregnant

Talk to your doctor before using Rythmol SR if you:

  • Are taking any of the medications that could interact with Rythmol SR
  • Have a breathing disorder
  • Have impaired hepatic and renal function
  • Have lupus
  • Have myasthenia gravis
  • Are breastfeeding or are planning to breastfeed

Rythmol SR generic

Rythmol SR is the trademark brand name for propafenone hydrochloride manufactured by GSK. A generic version of propafenone hydrochloride is available. Generic drugs are generally cheaper than brand-name drugs, but you can still find Rythmol SR savings through NiceRx.

Related conditions

The content on this website is intended for information purposes only. It does not constitute medical advice. The information on this website should not be relied upon and is not a substitute for professional medical advice. You should always speak to your doctor regarding the risks and benefits of any treatment.