Rytmonorm Tablet: Uses, Dosage, Side Effects, Precautions and Alternates

Quick overview

Rytmonorm Tablet contains propafenone hydrochloride, a Class 1c antiarrhythmic agent used to treat abnormal heart rhythms. It works by blocking sodium channels in heart muscle cells to calm unstable electrical activity, with a weak secondary beta-blocking effect. It is a prescription-only medicine and should be taken exactly as directed by a doctor.

What is Rytmonorm Tablet

Rytmonorm is a prescription-only medicine used to treat abnormal heart rhythms (arrhythmias). Its active ingredient is propafenone hydrochloride, which belongs to a group of medicines called anti-arrhythmic agents.

Rytmonorm Tablet uses

• Treating supraventricular extrasystoles and supraventricular tachycardias
• Treating Wolff-Parkinson-White (WPW) syndrome
• Treating life-threatening documented ventricular tachyarrhythmia
• Managing paroxysmal atrial fibrillation and atrial flutter

Benefits of Rytmonorm Tablet

• Heart Rhythm Control: Helps treat certain abnormal heart rhythms.
• Atrial Fibrillation Support: May help maintain normal rhythm in selected patients.
• Atrial Flutter Support: Can help control certain atrial arrhythmias.
• Rhythm Stabilization: Slows abnormal electrical signals in the heart.
• Palpitation Reduction: May reduce symptoms caused by certain arrhythmias.

How Rytmonorm Tablet works

The medicine blocks sodium channels in heart muscle cells, which slows the electrical signals that cause the heartbeat. This calms unstable electrical activity in the heart. It also has a weak, secondary effect of blocking beta-adrenergic receptors, which reduces the heart's response to adrenaline.

Rytmonorm Tablet dosage

Swallow the tablets whole with a full glass of water. Do not take with grapefruit juice. Take your medicine at about the same time each day for the best effect. If you forget a dose, skip the missed dose and take your next dose as scheduled; do not take a double dose. Keep taking your medicine for as long as your doctor tells you, even if you feel well. You may need a lower dose if you are elderly, have kidney or liver problems, or have a low body weight.

Available forms and strengths

• Film-coated tablet
• Solution for injection

Side effects of Rytmonorm Tablet

Common

• Dizziness
• Palpitations
• Cardiac conduction disorders
• Nausea and vomiting
• Headache
• Anxiety
• Sleep disorders
• Constipation
• Fatigue
• Taste or smell disturbances
• Dry mouth
• Abdominal pain
• Diarrhea

Serious

• Syncope (fainting)
• Blurred vision
• Hypotension (low blood pressure)
• Agranulocytosis
• Lupus-like syndrome
• Severe proarrhythmia (new or worsened heart rhythm problems, including ventricular fibrillation)
• Signs of liver problems (yellowing of skin/eyes, pale stools, dark urine)
• Unusual bleeding or bruising
• Signs of infection (sore throat, chills, fever)
• Convulsions, seizures, or fits
• Difficulty breathing
• Coma
• Chest pain

Warnings and precautions

• This medicine can cause new or worsened irregular heart rhythms, including potentially fatal ones like ventricular fibrillation. This risk is highest when starting treatment or increasing the dose.
• Do not take this medicine if you have Brugada syndrome, significant structural heart disease, uncontrolled heart failure, a recent heart attack (within 3 months), severe low blood pressure, severe asthma or breathing disorders, electrolyte imbalances, myasthenia gravis, or if you are taking ritonavir.
• Avoid grapefruit juice while taking this medicine, as it can increase the amount of drug in your blood.
• If you have a pacemaker, it needs to be checked and may need reprogramming during treatment, since this medicine can change how the pacemaker senses and paces the heart.
• Report any unexplained fever, sore throat, or chills to your doctor promptly, as these could be signs of a serious blood disorder.
• There is not enough research on using this medicine during pregnancy. It should only be used if your doctor decides the benefits outweigh the possible risks to the baby.
• This medicine may pass into breast milk, so it should be used with caution while breastfeeding. Talk to your doctor about the risks and benefits.
• If you have kidney problems, this medicine should be used carefully, since it may build up in your body and needs close monitoring.
• If you have liver problems, your dose will likely need to be much lower, because the medicine can build up in your body.
• Alcohol can add to the central nervous system effects of this medicine, such as drowsiness or dizziness.
• This medicine can cause blurred vision, dizziness, tiredness, and low blood pressure, which can affect your ability to drive or use machines safely. Be careful until you know how it affects you.

Storage

• Keep your tablets in the pack until it is time to take them
• Keep your tablets in a cool, dry place where the temperature stays below 25°C
• Do not store in the bathroom or near a sink, and do not leave it on a window sill or in the car
• Keep it where children cannot reach it, such as a locked cupboard at least one-and-a-half metres above the ground
• Do not take this medicine after the expiry date, or if the packaging is torn or shows signs of tampering
• If the medicine has expired or any is left over, ask your pharmacist what to do with it

When to see a doctor

• Get emergency help right away if you or someone else may have taken too much of this medicine, even if there are no symptoms yet.
• Seek urgent medical help if you notice signs of an allergic reaction such as rash, itching, swelling of the lips, face or tongue, hives, or trouble breathing.
• Seek urgent medical help for yellowing of the skin or eyes, pale stools, or dark urine, as these may signal liver problems.
• Get emergency help for convulsions, seizures, fits, difficulty breathing, coma, an unusually slow, fast, or irregular heartbeat, or chest pain.
• Call emergency services immediately if the person collapses, has a seizure, has trouble breathing, or cannot be woken up, since no specific antidote exists for an overdose of this medicine.

Alternatives

• Amiodarone
• Sotalol
• Flecainide