Razine
Razine Uses, Dosage, Side Effects, Food Interaction and all others data.
Razine has anti-ischemlc and antlanginal effects that do not depend upon reductions in heart rate or blood pressure.The exact mechanism of action of ranolazine is unknown. Razine at therapeutic levels can inhibit the cardiac late sodium current (INa). However, the relationship of this inhibition to angina symptoms is uncertain.
The QT prolongation effect of ranolazine on the surface electrocardiogram is the result of inhibition of IKr which prolongs the ventricular action potential.
Razine exerts both antianginal and ischemic effects independent from lowering heart rate or blood pressure. It blocks IKr, the rapid portion of the delayed rectifier potassium current, and prolongs the QTc interval in a dose-dependent fashion. The Ikr is important for cardiac repolarization. Razine exerts its therapeutic effects without negative chronotropic, dromotropic, or inotropic actions neither at rest, nor during exercise.
Trade Name | Razine |
Availability | Prescription only |
Generic | Ranolazine |
Ranolazine Other Names | Ranolazina, Ranolazine |
Related Drugs | amlodipine, aspirin, metoprolol, carvedilol, propranolol, atenolol |
Type | Tablet |
Formula | C24H33N3O4 |
Weight | Average: 427.5365 Monoisotopic: 427.247106559 |
Protein binding | Approximately 62% of the administered dose of ranolazine is bound to plasma proteins. Ranolazine appears to have a higher binding affinity for alpha-1 acid glycoprotein. |
Groups | Approved, Investigational |
Therapeutic Class | Other Anti-anginal & Anti-ischaemic drugs |
Manufacturer | Ajanta Pharma Ltd |
Available Country | India |
Last Updated: | September 19, 2023 at 7:00 am |
![Razine Razine](https://www.medicinesfaq.com/media/png/razine.png)
Uses
Razine is used for the treatment of chronic angina. Razine may be used with beta-blockers, nitrates, calcium channel blockers, anti-platelet therapy, lipid-lowering therapy, ACE inhibitors, and angiotensin receptor blockers. It has been shown to decrease angina episodes in patients with coronary artery disease on maximal doses of amlodipine. Because Razine prolongs the QT interval, it should be reserved for patients who have not achieved an adequate response with other antianginal drugs.The effect on angina rate or exercise tolerance appeared to be smaller in women than men.
Razine is also used to associated treatment for these conditions: Chronic Angina, Arrhythmia of ventricular origin
How Razine works
Myocardial ischemia exerts effects on adenosine triphosphate flux, leading to a decrease in the energy available for contraction and relaxation of the heart muscle. Electrolyte balance of sodium and potassium is necessary for maintaining normal cardiac contraction and relaxation. Disruption of adequate sodium and potassium electrolyte balance leads to excessively high concentrations of sodium and calcium, which likely interferes with oxygen supply to the heart muscle. This imbalance eventually leads to angina symptoms of chest pain or pressure, nausea, and dizziness, among others.
The mechanism of action for ranolazine is not fully understood. At therapeutic concentrations, it can inhibit the cardiac late sodium 205 current (INa), which may affect the electrolyte balance in the myocardium, relieving angina symptoms. The clinical significance this inhibition in the treatment of angina symptoms is not yet confirmed.
Razine inhibits sodium and potassium ion channel currents. It has been shown to exert weak activity on L-type calcium channels making it a weak direct vasodilator and exerts minimal direct effects on atrioventricular nodal conduction. Some additional mechanisms have been elucidated. Razine exerts antagonistic activity towards the alpha 1 and beta 1 adrenergic receptors and inhibition of fatty acid oxidation.
Dosage
Razine dosage
Initiate Razine dosing at 500 mg twice daily and increase to 1000 mg twice daily, if needed, based on clinical symptoms. Take Razine with or without meals. Swallow Razine tablets whole; do not crush, break or chew. The maximum recommended daily dose of Razine is 1000 mg twice daily. If a dose of Razine is missed, take the prescribed dose at the next scheduled time; do not double the next dose.
Side Effects
Cardiac Disorders: bradycardia, palpitations
Ear and Labyrinth Disorders: tinnitus, vertigo
Gastrointestinal Disorders: abdominal pain, dry mouth, vomiting
General Disorders and Administrative Site Adverse Events: peripheral edema
Respiratory, Thoracic, and Mediastinal Disorders: dyspnea
Vascular Disorders: hypotension, orthostatic hypotension
Toxicity
The reported LD50 of oral ranolazine in the rat is 980 mg/kg. High oral doses of ranolazine have led to dizziness, nausea, and vomiting. These effects have been shown to be dose related. High intravenous doses can cause diplopia, confusion, paresthesia, in addition to syncope. In the case of an overdose, provide supportive therapy accompanied by continuous ECG monitoring for QT interval prolongation.
Precaution
Razine blocks QTc and prolongs the QTc interval in a dose-related manner. Clinical experience in an acute coronary syndrome population did not show an increased risk of proarrhythmia or sudden death.
Co-administration of ranolazine with digoxin increases the plasma concentrations of digoxin by approximately 1.5-fold and the dose of digoxin may have to be reduced accordingly. The dose of other P-gp substrates may have to be reduced as well when ranolazine Is co-admlnistered. Caution should be exercised when co-adminlstering ranolazine with P-gp inhibitors such as ritonavir or cydosporine.
Interaction
CYP 3A Inhibitors: Do not use Razine with strong CYP 3A inhibitors. With moderate CYP 3A inhibitors (e.g., diltiazem, verapamil, erythromycin) limit maximum dose of ranolazine to 500 mg twice daily.
CYP 3A Inducers: Do not use Razine with inducers.
P-gp Inhibitors (e.g., Cyclosporin): May need to lower the Razine dose based on clinical dose.
Drugs transported by P-gp or metabolized by CYP2D6 (eg., digoxin, TCA): May need reduced doses of these drugs when used with ranolazine.
Food Interaction
- Avoid grapefruit products.
- Take with or without food. The absorption is unaffected by food.
[Major] GENERALLY AVOID: Grapefruit and grapefruit juice may significantly increase the plasma concentrations of orally administered ranolazine.
The proposed mechanism is inhibition of CYP450 3A4-mediated first-pass metabolism in the gut wall by certain compounds present in grapefruit.
Because ranolazine prolongs QT interval in a dose-dependent manner, high plasma levels of ranolazine may increase the risk of ventricular arrhythmias such as ventricular tachycardia, ventricular fibrillation, and torsade de pointes.
MANAGEMENT: Patients treated with ranolazine should avoid consumption of grapefruit juice and other grapefruit products if possible.
Otherwise, the dosage of ranolazine should be limited to 500 mg twice a day.
Razine Drug Interaction
Major: atorvastatin, acetaminophen / hydrocodoneModerate: ticagrelor, apixaban, empagliflozin, metoprolol, metoprolol, rivaroxabanUnknown: aspirin, aspirin, ubiquinone, rosuvastatin, omega-3 polyunsaturated fatty acids, insulin glargine, furosemide, nitroglycerin, clopidogrel, cyanocobalamin, ascorbic acid, cholecalciferol
Razine Disease Interaction
Major: severe hepatic impairmentModerate: QT prolongation, renal disease
Volume of Distribution
The mean apparent volume of distribution of ranolazine is reported to be 53.2 L and the average steady-state volume of distribution is estimated to range from 85 to 180 L.
Elimination Route
The time to reach peak serum concentration is quite variable but has been observed to be in the range of 2-6 hours, with steady-state within 3 days. The FDA indicates a Tmax of 3-5 hours. The average steady-state Cmax is about 2600 ng/mL. Absorption of ranolazine is not significantly affected by food consumption. The bioavailability of ranolazine taken in the tablet form compared to that from a solution of ranolazine is about 76%.
Half Life
The apparent terminal half-life of ranolazine is 7 hours.
Clearance
The reported clearance rate of orally administered ranolazine is of 45 L/h when administered at a dose of 500 mg twice daily. The clearance rate of ranolazine is dose-dependent and renal impairment can increase ranolazine serum concentration by 40-50%.
Elimination Route
From the administered dose, about 3/4 of the dose is excreted renally, while 1/4 of the dose is excreted in the feces. An estimated 5% of an ingested dose is excreted as unchanged drug.
Pregnancy & Breastfeeding use
Pregnancy Category C. There are no adequate studies assessing the effect of ranolazine on the developing fetus. There are no adequate well-controlled studies in pregnant women. Razine should be used during pregnancy only when the potential benefit to the patient justifies the potential risk to the fetus.lt is not known whether ranolazine is excreted in human milk. Because of the potentiality for serious adverse reactions from ranolazine in nursing infants, a decision should be made whether to discontinue nursing or to discontinue Razine, taking into account the importance of the drug to the mother.
Contraindication
Razine is contraindicated in patients:
- With pre-existing QT prolongation
- With hepatic impairment
- Taking QT prolonging drugs
- Taking potent and moderately potent CYP3A inhibitors such as ketoconazole, itraconazole, clarithromycin, nefazodone, nelfinavir, ritonavir, indinavir, and saquinavir, including diltiazem.
Special Warning
Pediatric use: Safety and effectiveness in pediatric patients have not been established.Renal Impairment:
- Mild to moderate (CrCl 30-80 mL/min): Dose titration needed
- Severe (CrCl <30 mL/min): Contraindicated
Hepatic Impairment:
- Mild: Dose titration needed
- Moderate to severe: Contraindicated
Acute Overdose
Symptoms: Dizziness, nausea, vomiting, diplopia, lethargy, syncope, severe tremor, incoordination, dysplasia, hallucination.
Management: Symptomatic and supportive treatment.
Storage Condition
Store Razine tablets at 25°C with excursion permitted to 15° to 30°C. Protect from light and moisture.
Innovators Monograph
You find simplified version here Razine
Razine contains Ranolazine see full prescribing information from innovator Razine Monograph, Razine MSDS, Razine FDA label
FAQ
What is Razine used for?
Razine used to treat heart related chest pain. Typically it is used together with other medications when those are insufficient.
How safe is Razine?
Razine is a safe drug with minimal side effects. It is metabolized mainly in the liver and cleared by the kidney.
How does Razine work?
Razine by reducing the flow of calcium into the cells, Razine is thought to help the heart to relax, improving blood flow to the heart muscle and relieving the symptoms of angina pectoris.
What are the common side effects of Razine?
Common side effects of Razine include:
- dizziness,
- spinning sensation,
- nausea,
- vomiting,
- stomach pain,
- constipation,
- headache,
- dry mouth,
- weakness,
- ringing in your ears,
- swelling in hands/ankles/feet,
- slow/fast/irregular heartbeats,
- tremors,
- blood in the urine, and
- shortness of breath.
Is Razine safe during pregnancy?
This drug should not be used during pregnancy unless clearly needed. The manufacturer makes no recommendation regarding use during pregnancy. Animal studies failed to reveal evidence of fetal harm at exposures 4 times the maximum recommended human dose.
Is Razine safe during breastfeeding?
Use should be avoided.Benefit should outweigh risk.The effects in the nursing infant are unknown.
Can I drink alcohol with Razine?
Intake of alcohol with Razine will make you feel dizzy and sleepy. It is better to avoid alcohol when you are on this drug especially when you have to be alert.
When is the best time to take Razine?
Try to take your doses at the same times of day each day, as this will help you to remember to take them regularly. You can take Razine either before or after a meal.
How long does it take for Razine to start working?
Razine doesn't work very fast, and usually takes about 4 hours for peak effect.
What does Razine do for the heart?
By reducing the flow of calcium into the cells, Razine is thought to help the heart to relax, improving blood flow to the heart muscle and relieving the symptoms of angina pectoris.
Does Razine lower blood pressure?
Razine has beneficial metabolic properties and does not affect heart rate or blood pressure.
What happens if I stop taking Razine?
Do not suddenly stop taking this medication without consulting your doctor. Your condition may become worse when the drug is suddenly stopped. Your dose may need to be gradually decreased.
Can Razine cause shortness of breath?
Razine can causes slow/fast/irregular heartbeats, tremors, blood in the urine, and. shortness of breath.
Who should not take Razine?
You should not take Razine if you have cirrhosis of the liver.
Tell your doctor about all your current medicines and any you start or stop using. Many drugs can interact, and some drugs should not be used together.
What happens if I miss a dose?
Skip the missed dose and use your next dose at the regular time. Do not use two doses at one time.
What happens if I overdose?
Seek emergency medical attention.Overdose can cause nausea, vomiting, numbness or tingling, dizziness, double vision, confusion, or fainting.
What does Razine do for the heart?
By reducing the flow of calcium into the cells, Razine is thought to help the heart to relax, improving blood flow to the heart muscle and relieving the symptoms of angina pectoris.
Is Razine bad for kidneys?
Razine does not commonly cause kidney problems.