Rythmol SR

(Propafenone Hydrochloride ER)
  • All Strengths

  • 225mg

  • 325mg

  • 425mg

Brand Choices

Rythmol SR 225mg

Extended Release Capsules
Rythmol SR 225mg
Rythmol SR 225mg

Rythmol SR 225mg

Extended Release Capsules

Currently Unavailable

Prescription required. Manufactured by Glaxo Smithkline Product of United States. Shipped from United States.

Rythmol SR 325mg

Extended Release Capsules
Rythmol SR 325mg
Rythmol SR 325mg

Rythmol SR 325mg

Extended Release Capsules

Currently Unavailable

Prescription required. Manufactured by Glaxo Smithkline Product of United States. Shipped from United States.

Rythmol SR 425mg

Extended Release Capsules
Rythmol SR 425mg
Rythmol SR 425mg

Rythmol SR 425mg

Extended Release Capsules

Currently Unavailable

Prescription required. Manufactured by Glaxo Smithkline Product of United States. Shipped from United States.

Rythmol SR Drug Information

Are you paying too much for Rythmol SR? Save up to 80% when purchasing your prescription drugs from Universal Drugstore. Our prescription service aspires to conveniently provide you with affordable medications at the lowest prices in Canada and internationally.

We’re working with a number of Canadian and international pharmacy partners, all licensed by their qualified governmental regulatory bodies. By collaborating with our partners, we are able to offer a wide range of brand and generic medications at very competitive prices. You can obtain discount prescription drugs through our online pharmacy. Our prices are already up to 80% lower than your local pharmacy. We are committed to providing you with the best service and prices. This is why we’ll match the price of any of our online pharmacy competitors who require a valid prescription.

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Why Buy Rythmol SR from Universal Drugstore?

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How Long Does It Take to Receive My Rythmol SR Order?

You can easily place an order on our website in under 5 minutes. First you need to set up an account with us, create a payment method, and send us your prescriptions. Alternatively, you can order by downloading our order form or by placing an order over the phone. Delivery can take approximately 2 weeks to North America, and 4 weeks to other countries.

  • Rythmol SR Overview

    Rythmol SR is used to treat certain types of serious (possibly fatal) irregular heartbeat (such as paroxysmal supraventricular tachycardia and atrial fibrillation). Rythmol SR is used to restore normal heart rhythm and maintain a regular, steady heartbeat. Propafenone is known as an anti-arrhythmic drug. It works by blocking the activity of certain electrical signals in the heart that can cause an irregular heartbeat. Treating an irregular heartbeat can decrease the risk for blood clots, and this effect can reduce your risk of heart attack or stroke.

  • Rythmol SR Warnings

    Though Rythmol SR often gives great benefits to people with irregular heartbeat, it may rarely cause a serious new irregular heartbeat. Therefore, when starting treatment with Rythmol SR, your doctor may recommend that you stay in the hospital for proper monitoring and emergency medical treatment if needed. Talk with your doctor about the benefits and risks of taking Rythmol SR.

  • How to Use Rythmol SR

    Take Rythmol SR by mouth with or without food, usually every 8 hours or as directed by your doctor. Dosage of Rythmol SR is based on your medical condition and response to treatment. Use Rythmol SR regularly to get the most benefit from it. To help you remember, take it at the same times each day. Avoid eating grapefruit or drinking grapefruit juice while using Rythmol SR unless your doctor or pharmacist says you may do so safely. Grapefruit can increase the chance of side effects with this medicine. Ask your doctor or pharmacist for more details. Tell your doctor if your condition does not improve or if it worsens.

  • Rythmol SR Precautions

    Before taking propafenone, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. Rythmol SR may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Before using Rythmol SR, tell your doctor or pharmacist your medical history,breathing problems (such as asthma, chronic bronchitis, emphysema), kidney problems, liver problems, myasthenia gravis, a certain inherited heart condition (Brugada Syndrome). Propafenone may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can rarely cause serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that need medical attention right away. The risk of QT prolongation may be increased if you have certain medical conditions or are taking other drugs that may cause QT prolongation. Before using propafenone,certain heart problems (heart failure, slow heartbeat, QT prolongation in the EKG), family history of certain heart problems (QT prolongation in the EKG, sudden cardiac death). Low levels of potassium or magnesium in the blood may also increase your risk of QT prolongation. This risk may increase if you use certain drugs (such as diuretics/"water pills") or if you have conditions such as severe sweating, diarrhea, or vomiting. Talk to your doctor about using propafenone safely. Rythmol SR may make you dizzy. Alcohol or marijuana (cannabis) can make you more dizzy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis). Before having surgery, tell your doctor or dentist that you are using Rythmol SR. Older adults may be more sensitive to the side effects of Rythmol SR, especially QT prolongation (see above). During pregnancy, Rythmol SR should be used only when clearly needed. Discuss the risks and benefits with your doctor. Rythmol SR passes into breast milk. Consult your doctor before breast-feeding.

  • Rythmol SR Misdose

    If you miss a dose of Rythmol SR, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose. Take your next dose at the regular time. Do not double the dose to catch up.

  • Rythmol SR Interactions

    See also How to Use section. Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval. Many drugs besides propafenone may affect the heart rhythm (QT prolongation), including amiodarone, dofetilide, flecainide, pimozide, procainamide, quinidine, sotalol, macrolide antibiotics (such as clarithromycin, erythromycin), and certain quinolone antibiotics (such as sparfloxacin), among others. Other medications can affect the removal of propafenone from your body, which may affect how propafenone works. Examples include asunaprevir, desipramine, ketoconazole, orlistat, phenobarbital, phenytoin, rifampin, and certain HIV protease inhibitors (such as ritonavir, tipranavir), among others. Propafenone can slow down the removal of other medications from your body, which may affect how they work. Examples of affected drugs include digoxin, imipramine, metoprolol, propranolol, warfarin, among others.

  • Rythmol SR Side Effects

    What are Rythmol SR side effects?

    Side effects are physical, mental or emotional symptoms which occur in addition to or outside of the desired effect of a therapeutic treatment such as an over-the-counter or prescribed drug or medication. Side effects from Rythmol SR may occur at the beginning or at the end of treatment and may also depend on the length of time an individual remains on the treatment. Side effects, also known as adverse effects, are generally more likely to occur when starting treatment. Individuals may also experience side effects from Rythmol SR as a result of an interaction with other medications.

    Side Effects of Rythmol SR

    The side effects of Rythmol SR may vary in number and intensity for many different reasons. Factors such as age, weight, gender and ethnicity may influence the side effects of Rythmol SR. Also, an individual’s state of general physical health and seriousness of the disease or illness as well as an increase or decrease in dosage may lead to side effects. Further, side effects from Rythmol SR may also occur as a result of an interaction with certain herbal supplements, foods or drinks.

    Prescription drug side effects can be serious and may cause patients to stop the treatment. However, when side effects from the use of a prescription drug, such as Rythmol SR, do occur a patient should consult their physician. A physician may prescribe an additional treatment in order to control the symptoms or an adjustment in the dosage may be made. In addition, changes to diet, exercise or other lifestyle activities may help to lessen the side effects of Rythmol SR.

    By understanding side effects and the factors which may influence the occurrence of side effects patients are empowered to take an active role in their care. Patients who have specific questions about the side effects of Rythmol SR, or any other medication, should contact their physician. General information about Rythmol SR and the side effects associated with Rythmol SR are described in the following:

    Common Rythmol SR Side Effects


    • ventricular tachycardia

    Less Severe

    • constipation
    • dizziness
    • dysgeusia
    • palpitations
    • dyspnea
    • symptoms of anxiety
    • upper respiratory infection
    • edema
    • influenza

    Less Frequent Rythmol SR Side Effects


    • angina
    • atrioventricular block
    • chronic heart failure

    Less Severe

    • blurred vision
    • xerostomia
    • fatigue
    • tremor
    • headache disorder
    • nausea
    • vomiting
    • diarrhea
    • chest pain
    • general weakness
    • depression
    • rales
    • ecchymosis

    Rare or Very Rare Rythmol SR Side Effects


    • agranulocytosis
    • bundle branch block
    • paroxysmal supraventricular tachycardia
    • atrial flutter
    • bradycardia
    • cardiac arrhythmia
    • hypotension
    • hypertension
    • prolonged QT interval
    • ventricular fibrillation
    • neuromuscular blockade
    • thrombocytopenic disorder
    • acute myocardial infarction
    • pancreatitis
    • tendonitis
    • cerebrovascular accident
    • paralysis
    • urinary retention
    • thromboembolic disorder
    • ocular hemorrhage
    • retinal disorder
    • gastrointestinal obstruction
    • peptic ulcer
    • rectal bleeding
    • hepatomegaly
    • diabetes mellitus
    • gout
    • hypokalemia
    • renal failure
    • atelectasis
    • hemoptysis
    • pleural effusions
    • pulmonary congestion
    • acute respiratory insufficiency
    • throat constriction
    • hemorrhage
    • neutropenic disorder

    Less Severe

    • pallor
    • arthritis
    • lymphadenopathy
    • tinnitus
    • vertigo
    • gastritis
    • glossitis
    • hyperglycemia
    • libido changes
    • increased urinary frequency
    • ocular inflammation
    • blepharoptosis
    • miosis
    • reduced visual acuity
    • abdominal distension
    • acute abdominal pain
    • duodenitis
    • dyspepsia
    • dysphagia
    • eructation
    • gastroesophageal reflux disease
    • gingival bleeding
    • sore tongue
    • gingival pain
    • halitosis
    • black tarry stools
    • stomatitis
    • sore throat
    • sensation of warmth
    • malaise
    • pain
    • fever
    • anorexia
    • dehydration
    • hypercholesterolemia
    • bursitis
    • cramps
    • muscle spasm
    • myalgia
    • neck pain
    • sciatica
    • memory impairment
    • ataxia
    • dementia
    • gait abnormality
    • hypertonia
    • hypesthesia
    • insomnia
    • paresthesia
    • dysarthria
    • syncope
    • mood changes
    • nightmares
    • sleep disorder
    • dysuria
    • nocturia
    • oliguria
    • pyuria
    • urinary incontinence
    • mastalgia
    • erectile dysfunction
    • prostatitis
    • cough
    • epistaxis
    • rhinitis
    • alopecia
    • skin inflammation
    • dry skin
    • erythema
    • nail disorders
    • petechiae
    • pruritus of skin
    • hyperhidrosis
    • urticaria
  • Rythmol SR Storage

    Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications away from children and pets. Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard Rythmol SR when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.

IMPORTANT DISCLAIMER: All medical content is supplied by a third party company who is independent from this web site. As such, this web site can not guarantee the reliability, accuracy, and /or medical efficacy of the information provided. In all circumstances, you should seek the advice of a health professional pertaining to drug, treatment and/or medical condition advice. Note that not all products are shipped by our contracted Canadian pharmacy. This website contracts with dispensaries around the world that ship products directly to our customers. Some of the jurisdiction include but are not limited to United Kingdom, Europe, Turkey, India, Canada, Vanuatu, Mauritius, and USA. The items within your order may be shipped from any one of these jurisdiction depending on the availability and cost of the products at the time you place your order. The products are sourced from these countries as well as others. Please note that the product appearance may vary from actual product received depending on availability.