Tambocor

Atrial Fibrillation, Tachycardia, Atrioventricular Nodal Reentry, Tachycardia, Ventricular + 11 more

Treatment

22 FDA approvals

20 Active Studies for Tambocor

What is Tambocor

Flecainide

The Generic name of this drug

Treatment Summary

Flecainide is a medication used to treat abnormal heart rhythms such as atrial fibrillation and flutter. It was first developed in 1966 and synthesized in 1972, and was officially approved by the FDA in 1985. Flecainide belongs to a class of medications called Class I anti-arrhythmic agents, which also includes drugs like encainide and propafenone.

Tambocor

is the brand name

Tambocor Overview & Background

Brand Name

Generic Name

First FDA Approval

How many FDA approvals?

Tambocor

Flecainide

1985

82

Approved as Treatment by the FDA

Flecainide, commonly known as Tambocor, is approved by the FDA for 22 uses like Tachycardia, Supraventricular and Supraventricular tachycardia .

Tachycardia, Supraventricular

Supraventricular tachycardia

Atrial Fibrillation

severe ventricular arrhythmias

prophylaxis of severe Paroxysmal supraventricular tachycardia

prophylaxis of severe Sustained ventricular tachycardia

Ventricular Tachycardia

severe Supraventricular Tachycardias

severe Paroxysmal atrial fibrillation

severe Atrioventricular nodal reentrant tachycardia

prophylaxis of severe Paroxysmal atrial fibrillation

prophylaxis of severe Atrioventricular nodal reentrant tachycardia

severe Sustained ventricular tachycardia

prophylaxis of severe ventricular arrhythmias

severe Paroxysmal supraventricular tachycardia

prophylaxis of severe Supraventricular Tachycardias

Paroxysmal supraventricular tachycardia

Paroxysmal supraventricular tachycardia

Tachycardia, Ventricular

Tachycardia, Ventricular

Tachycardia, Atrioventricular Nodal Reentry

Tachycardia, Atrioventricular Nodal Reentry

Effectiveness

How Tambocor Affects Patients

Flecainide is a medication used to treat heart arrhythmias by blocking sodium and potassium ion channels in the heart and increasing the amount of energy needed for the heart to beat. It needs to be taken once a day, but it is important to be careful with this medication as it can easily become dangerous if the dose is too high. People with existing structural heart disease or poor heart function should not take flecainide.

How Tambocor works in the body

Flecainide works by blocking sodium channels in the heart and preventing potassium channels from opening. This helps to prolong the refractory period of the heart and lengthen the action potentials in the Purkinjie fibers and muscle fibers. It also blocks the release of calcium from the sarcoplasmic reticulum, reducing the depolarization of cells.

When to interrupt dosage

The amount of Tambocor is contingent upon the diagnosed disorder, including Paroxysmal supraventricular tachycardia, severe Atrioventricular nodal reentrant tachycardia and Tachycardia, Ventricular. The dosage fluctuates, in accordance with the mode of administration (e.g. Tablet - Oral or Oral) detailed in the next table.

Condition

Dosage

Administration

Paroxysmal supraventricular tachycardia

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Tachycardia, Atrioventricular Nodal Reentry

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Tachycardia, Ventricular

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Tachycardia, Supraventricular

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

prophylaxis of severe Paroxysmal atrial fibrillation

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Tachycardia, Ventricular

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

prophylaxis of severe ventricular arrhythmias

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Supraventricular tachycardia

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Ventricular Tachycardia

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Tachycardia, Atrioventricular Nodal Reentry

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Paroxysmal supraventricular tachycardia

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Atrial Fibrillation

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

severe ventricular arrhythmias

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Atrial Fibrillation

100.0 mg, , 50.0 mg, 150.0 mg

Tablet - Oral, Oral, , Tablet

Warnings

Tambocor has five counter-indications, meaning it should not be taken when experiencing the conditions in the following table.

Tambocor Contraindications

Condition

Risk Level

Notes

Bundle-Branch Block

Do Not Combine

Shock, Cardiogenic

Do Not Combine

Atrioventricular Block

Do Not Combine

persistent second-degree atrioventricular block

Do Not Combine

Severe Hypersensitivity Reactions

Do Not Combine

Flecainide may interact with Pulse Frequency

There are 20 known major drug interactions with Tambocor.

Common Tambocor Drug Interactions

Drug Name

Risk Level

Description

Abemaciclib

Major

The excretion of Abemaciclib can be decreased when combined with Flecainide.

Acenocoumarol

Major

The metabolism of Acenocoumarol can be decreased when combined with Flecainide.

Anagrelide

Major

The risk or severity of QTc prolongation can be increased when Flecainide is combined with Anagrelide.

Arsenic trioxide

Major

The risk or severity of QTc prolongation can be increased when Flecainide is combined with Arsenic trioxide.

Artemether

Major

The risk or severity of QTc prolongation can be increased when Flecainide is combined with Artemether.

Tambocor Toxicity & Overdose Risk

The lethal dose of flecainide in rats is 1346mg/kg and in mice is 170mg/kg. For those who overdose, symptoms may include changes in their heart's electrical activity such as a slower heartbeat, a longer time between heartbeats, a longer QRS duration, a longer QT interval, increased T wave size, lower heart rate, and weaker heart contractions. Low blood pressure or death may also occur. Treatment should involve providing supportive care and administering drugs to help the heart function. Hemodialysis is not expected to help remove flecainide from the bloodstream.

Tambocor Novel Uses: Which Conditions Have a Clinical Trial Featuring Tambocor?

176 active studies are examining the potential of Tambocor to reduce severe ventricular arrhythmias, provide prophylaxis against severe ventricular arrhythmias, and treat Ventricular Tachycardia.

Condition

Clinical Trials

Trial Phases

prophylaxis of severe Paroxysmal atrial fibrillation

0 Actively Recruiting

Atrial Fibrillation

94 Actively Recruiting

Not Applicable, Phase 2, Phase 4, Phase 1, Phase 3, Early Phase 1

Paroxysmal supraventricular tachycardia

0 Actively Recruiting

severe ventricular arrhythmias

0 Actively Recruiting

Ventricular Tachycardia

13 Actively Recruiting

Not Applicable, Phase 3, Phase 2, Early Phase 1

Tachycardia, Atrioventricular Nodal Reentry

0 Actively Recruiting

Tachycardia, Ventricular

0 Actively Recruiting

Tachycardia, Ventricular

0 Actively Recruiting

Tachycardia, Atrioventricular Nodal Reentry

0 Actively Recruiting

prophylaxis of severe ventricular arrhythmias

0 Actively Recruiting

Atrial Fibrillation

0 Actively Recruiting

Tachycardia, Supraventricular

1 Actively Recruiting

Phase 4

Paroxysmal supraventricular tachycardia

0 Actively Recruiting

Supraventricular tachycardia

0 Actively Recruiting

Tambocor Reviews: What are patients saying about Tambocor?

5

Patient Review

3/9/2013

Tambocor for A Type of Fast Heartbeat - Paroxysmal Atrial Tachycardia

After taking this medication for an extended period of time with no positive results, I was taken off of it. Ablation was attempted but unsuccessful. I experienced several VTach episodes where my heart rate would spike for 15 minutes straight. I was hospitalized and put back on Tambocor at a higher dose. After increasing the dosage and taking it for a full month, I have only had 3 decent days with minimal PVCs.

5

Patient Review

4/10/2014

Tambocor for Atrial Fibrillation

Initially, I was only prescribed one 50mg tablet to be taken twice a day. This did not work for me, so my dosage was increased to two 50mg tablets per day. This change has been very effective; it's been over two weeks since my last episode.

5

Patient Review

3/5/2012

Tambocor for A Type of Fast Heartbeat - Paroxysmal Atrial Tachycardia

4.7

Patient Review

12/21/2011

Tambocor for Atrial Fibrillation

4

Patient Review

4/17/2013

Tambocor for Paroxysmal Atrial Fibrillation

Since taking this medication, I have felt very anxious and shaky.

4

Patient Review

8/2/2012

Tambocor for Atrial Fibrillation

4

Patient Review

9/6/2012

Tambocor for Atrial Fibrillation

3.7

Patient Review

9/3/2019

Tambocor for Paroxysmal Atrial Fibrillation

I have been dealing with AFib for a while now, and this medication has really helped to lessen the frequency and severity of my episodes. I still experience some chest pain and palpitations, but it is much better than it was before.

3.3

Patient Review

11/11/2021

Tambocor for Atrial Fibrillation

I've only been on this for three weeks, and the only side effect I've noticed is shortness of breath. I contacted my doctor, but they haven't gotten back to me yet; as a result, I ended up cutting the dose myself. This has made a big difference--I no longer have shortness of breath. Instead of taking 50 mg twice a day, I am now taking one 50 mg at night and only a half in the day hours. Recently, I had the Cardioversion which put me back to a normal rhythm.

3

Patient Review

7/24/2013

Tambocor for Heart Ventricle Rhythm Problem

The treatment is working which I'm happy about, though the side effects are quite troublesome. Anxiety, hair loss, and shortness of breath have all been issues.

3

Patient Review

3/30/2012

Tambocor for Life-Threatening Rapid Ventricular Heartbeat

1.3

Patient Review

10/5/2013

Tambocor for Atrial Fibrillation Electrically Shocked to Normal Rhythm

I had a really bad reaction to this drug. It was like poison to my system. I'm going to London to get the Tambacore brand instead.

1

Patient Review

5/29/2013

Tambocor for Atrial Fibrillation

Although this is technically effective, I am now having hand tremors and anxiety. These are probable side effects that should be considered before taking the medication.
image of drug pills surrounding a glass of water symbolizing drug consumption

Patient Q&A Section about tambocor

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

What are 3 side effects of flecainide?

"The person may experience shortness of breath, wheezing, difficult or labored breathing, fast or irregular heartbeat, dizziness, lightheadedness, or fainting."

Answered by AI

What is the medicine Tambocor used for?

"This medication is used to treat certain types of serious (possibly fatal) irregular heartbeat. These include conditions such as persistent ventricular tachycardia and paroxysmal supraventricular tachycardia. The medication is used to restore normal heart rhythm and maintain a regular, steady heartbeat."

Answered by AI

What are the most common side effects of flecainide?

"Stomach problems. Symptoms may include: constipation, bloating, gas, diarrhea, and abdominal pain. Vision problems. Symptoms may include: blurred vision, double vision, and decreased vision. Low blood pressure. Symptoms may include: dizziness, lightheadedness, fainting, and fatigue. Uncontrollable shaking of parts of your body, such as your hands, arms, head, or legs. Headache."

Answered by AI

Does Tambocor lower heart rate?

"You may experience nausea, vomiting, slow heart rate, fainting, or seizure (convulsions) if you overdose on Flecainide (Tambocor)."

Answered by AI

Clinical Trials for Tambocor

Image of Northwestern University in Chicago, United States.

Exercise Program for Atrial Fibrillation and Heart Failure

60 - 99
All Sexes
Chicago, IL

Atrial fibrillation (AF) and heart failure with preserved ejection fraction (HFpEF) are very common conditions that often occur together and result in worsening symptoms and reduced quality of life (QoL). Limitations being able to participate in activities of daily living is a primary complaint for AF-HFpEF patients, yet effective strategies to address this issue remain limited. While exercise interventions targeting aerobic training (AT) are recommended for patients with AF and HFpEF, unique challenges exist in this patient population who tend to be older. Specifically, many older patients with AF and HFpEF have muscle weakness, sarcopenia and frailty, that can make aerobic-focused exercise difficult and less tolerable. This study proposes that starting with progressive resistance training (PRT) before aerobic exercise may overcome these issues by improving muscle strength, making AT more manageable, and leading to better health outcomes. The goal of this study is to assess whether a sequential exercise program, named 'PREACTIVE' improves how people feel, decrease the amount of symptoms, and their ability to participate in exercise and activities. This study will specifically test a sequenced exercise approach of resistance training followed by aerobic exercise to improve symptoms, and quality of life in AF-HFpEF.

Waitlist Available
Has No Placebo

Northwestern University

Deepika Laddu, PhD

Image of Inova Alexandria Hospital in Alexandria, United States.

Heparin Dosing for Blood Clots and Heart Conditions

18+
All Sexes
Alexandria, VA

The goal of this clinical trial study is to test whether a mathematical calculation, using the patient's gender, weight and kidney function, can better predict a patient's heparin goal dose than a flat number of units per patient weight can. Participants will have the first dose of heparin infusion calculated, after which if adjustments are needed, the Hospital's prebuilt table for results driven dosing for this purpose is used. The researchers will compare the time it takes for the participants to get to the desired goal using the patient's information for calculation versus patients in the past who received the medication using the flat rate. The hypothesis is that the patients with enhanced personal data, gender, weight and kidney function, included for the initial dose, will get to their goal lab value sooner and with less chance of delay or overshooting the goal. A quicker time to goal lab value is beneficial to patients in many ways, including earlier treatment of the clot or coronary issue that the patient is experiencing.

Phase 4
Waitlist Available

Inova Alexandria Hospital

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Image of Mission Cardiovascular Research Institute in Fremont, United States.

REGN7508 + REGN9933 for Atrial Fibrillation

18+
All Sexes
Fremont, CA

This study is researching experimental drugs called REGN7508 and REGN9933. The study is focused on participants who have atrial fibrillation, which means that the heart beats too fast and unevenly. REGN7508 and REGN9933 are designed to help stop blood clots forming in patients with atrial fibrillation. The aim of the study is to see how well REGN7508 and REGN9933 work in patients that get medicine for their atrial fibrillation. The bleeding effects of REGN7508 and REGN9933 will be compared to another medicine (apixaban), which is available on the market to treat and prevent formation of blood clots. The study is looking at several other research questions, including: * What side effects may happen from taking REGN7508 or REGN9933 * How well do the study drugs reduce the risk of having a stroke * How much of REGN7508 or REGN9933 is in the blood at different times * Whether the body makes antibodies against REGN7508 or REGN9933 (which could make the drugs less effective or could lead to side effects)

Phase 2
Recruiting

Mission Cardiovascular Research Institute (+19 Sites)

Clinical Trial Management

Regeneron Pharmaceuticals

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Image of The Cleveland Clinic in Cleveland, United States.

Metabolic Surgery for Atrial Fibrillation

18 - 80
All Sexes
Cleveland, OH

Atrial fibrillation (AF) is the most common sustained cardiac arrhythmia. It is estimated that between 3 and 6 million Americans are currently living with AF, while 12 million people in the United States will have AF in 2030. Obesity and its comorbidities such as type 2 diabetes (T2DM), hypertension, and obstructive sleep apnea (OSA) are major risk factors for development and progression of AF. Metabolic and Bariatric Surgery (MBS) is the most effective currently available treatment for obesity. Patients typically lose 20 to 35 percent of body weight after surgery which is often sustained for many years. MBS can improve all 5 major risk factors of AF including obesity, hypertension, T2DM, OSA, and systemic inflammation. The purpose of the study is to understand if MBS can affect the severity of AF and the toll AF's symptoms take on patients.

Phase 4
Waitlist Available

The Cleveland Clinic

Ali Aminani

Ethicon, Inc.

Image of The Ottawa Hospital Civic Campus in Ottawa, Canada.

Cardiac CT Angiography for Atrial Fibrillation and Flutter

18+
All Sexes
Ottawa, Canada

The goal of this randomized clinical trial is to learn whether patients with symptomatic atrial fibrillation or atrial flutter (AF) who require heart imaging to rule out a blood clot before cardioversion would benefit from cardiac computed tomography angiography (CCT) in the emergency department (ED) compared to current standard of care management. This will be a multicenter trial evaluating whether CCT-facilitated cardioversion in the ED reduces hospital admission, reduces repeat presentations to hospital and improves patient quality of life compared to the current standard of care. Participants will undergo CCT-facilitated cardioversion or be treated according to current standard of care while in the ED and complete quality of life questionnaires in the ED and follow-up at 30 days.

Waitlist Available
Has No Placebo

The Ottawa Hospital Civic Campus

Benjamin Chow, MD PhD FRCPC FACC FESC FA

Image of UCSF Medical Center at Parnassus in San Francisco, United States.

Alcohol Abstinence for Atrial Fibrillation

18+
All Sexes
San Francisco, CA

Per the 2021 National Survey on Drug Use and Health administered by the U.S. Department of Health and Human Services, 85% of all American adults consume alcohol. Atrial fibrillation (AF) is the most common arrhythmia, affecting more than 10 million individuals in U.S., comprising 4.5% of the adult population. Although alcohol abstinence clearly reduces AF in heavy drinkers, observational data comparing the health effects of limited consumption versus abstention are conflicting. The Mediterranean diet is one of the few that has demonstrated clear cardiovascular benefits in a randomized study-this diet allows for the consumption of red wine (or high polyphenol/ low alcohol alcohol), generally not more than one drink in 24 hours, with meals, avoiding spirits and binge drinking. The effect of the "Mediterranean drinking pattern" on AF risk compared to alcohol abstinence remains unknown. This single center, randomized, controlled trial aims to compare the effects of a digital health intervention to encourage durable alcohol abstinence versus allowing guideline-adherent moderate alcohol consumption on AF severity. The knowledge gained from this study may be used to determine optimal thresholds for alcohol use among AF patients.

Recruiting
Has No Placebo

UCSF Medical Center at Parnassus

Gregory M Marcus, MD, MAS

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