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Medically reviewed by Militian Inessa Mesropovna, PharmD. Last updated on 28.04.2022
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Vimpat 10mg/ml is indicated in patients 17 years and older with partial-onset seizures as monotherapy or adjunctive therapy.
Vimpat 10mg/ml injection for intravenous use is an alternative when oral administration is temporarily not feasible.
Vimpat 10mg/ml is used together with other medicines to help control partial seizures (convulsions) in the treatment of epilepsy. It acts on the central nervous system (CNS) to reduce the number and severity of seizures. However, Vimpat 10mg/ml cannot cure epilepsy and will only work to control seizures for as long as you continue to take it.
Vimpat 10mg/ml is available only with your doctor's prescription.
Dosage For Vimpat 10mg/ml Tablet And
Oral Solution
Monotherapy
The initial recommended dose of Vimpat 10mg/ml is 100 mg twice daily (200 mg per day); the dose should be increased by 50 mg twice daily (100 mg per day) every week, up to a recommended maintenance dose of 150 mg twice daily to 200 mg twice daily (300 mg to 400 mg per day). Alternatively, Vimpat 10mg/ml may be initiated with a single loading dose of 200 mg, followed approximately 12 hours later by 100 mg twice daily (200 mg per day); this dose regimen should be continued for one week. Based on individual response and tolerability, the dose can be increased at weekly intervals by 50 mg twice daily (100 mg per day), as needed, up to the recommended maintenance dose of 150 mg twice daily to 200 mg twice daily (300 mg to 400 mg per day). The loading dose should be administered with medical supervision because of the increased incidence of CNS adverse reactions.
For patients who are already on a single antiepileptic and will convert to Vimpat 10mg/ml monotherapy, the therapeutic dose of 150 mg twice daily to 200 mg twice daily (300 mg to 400 mg per day) should be maintained for at least 3 days before initiating withdrawal of the concomitant antiepileptic drug. A gradual withdrawal of the concomitant antiepileptic drug over at least 6 weeks is recommended.
Adjunctive Therapy
The initial recommended dose is 50 mg twice daily (100 mg per day). Based on individual patient response and tolerability, the dose can be increased at weekly intervals by 50 mg twice daily (100 mg per day). The recommended maintenance dose is 100 mg twice daily to 200 mg twice daily (200 mg to 400 mg per day). In clinical trials, the 300 mg twice daily (600 mg per day) dose was not more effective than the 200 mg twice daily dose (400 mg per day), but was associated with a substantially higher rate of adverse reactions.
Alternatively, Vimpat 10mg/ml may be initiated with a single loading dose of 200 mg, followed approximately 12 hours later by a 100 mg twice daily (200 mg per day); this maintenance dose regimen should be continued for one week. Based on individual patient response and tolerability, the dose can be increased at weekly intervals by 50 mg twice daily (100 mg per day), as needed, up to the maximum recommended maintenance dose of 200 mg twice daily (400 mg per day). The loading dose should be administered with medical supervision because of the increased incidence of CNS adverse reactions.
When discontinuing Vimpat 10mg/ml, a gradual withdrawal over at least 1 week is recommended.
Dosage For Vimpat 10mg/ml Injection
Intravenous Vimpat 10mg/ml can be administered in the same dosing regimens described for oral dosing, including the loading dose. These dosages may be infused intravenously over a period of 15 minutes to 60 minutes.
Intravenous infusion of 30 to 60 minutes is preferable, and should be used when a 15 minute administration is not required.
Monitor closely patients with known cardiac conduction problems, on concomitant medications that prolong PR interval, or with severe cardiac disease (e.g., myocardial ischemia, heart failure), as intravenous infusion of Vimpat 10mg/ml may cause bradycardia or AV blocks in these patients.
When switching from oral to intravenous Vimpat 10mg/ml, the initial total daily intravenous dosage regimen of Vimpat 10mg/ml should be equivalent to the dosage regimen of oral Vimpat 10mg/ml. The clinical study experience of intravenous Vimpat 10mg/ml is limited to 5 days of consecutive treatment. At the end of the intravenous treatment period, the patient may be switched to Vimpat 10mg/ml oral administration at the equivalent daily dosage and frequency of the intravenous administration.
Dosage Information In Patients With Renal Impairment
No dose adjustment is necessary in patients with mild to moderate renal impairment. A maximum dose of 300 mg per day Vimpat 10mg/ml is recommended for patients with severe renal impairment [creatinine clearance (CLCR) less than or equal to 30 mL/min] and in patients with endstage renal disease. Vimpat 10mg/ml is effectively removed from plasma by hemodialysis. Following a 4-hour hemodialysis treatment, dosage supplementation of up to 50% should be considered. In all renally impaired patients, the dose titration should be performed with caution. Patients with renal impairment who are taking strong inhibitors of CYP3A4 and CYP2C9 may have a significant increase in exposure to Vimpat 10mg/ml. Dose reduction may be necessary in these patients.
Dosage Information In Patients With Hepatic Impairment
The dose titration should be performed with caution in patients with hepatic impairment. A maximum dose of 300 mg per day is recommended for patients with mild or moderate hepatic impairment.
Vimpat 10mg/ml use is not recommended in patients with severe hepatic impairment. Patients with hepatic impairment who are taking strong inhibitors of CYP3A4 and CYP2C9 may have a significant increase in exposure to Vimpat 10mg/ml. Dose reduction may be necessary in these patients.
Administration Instructions
Vimpat 10mg/ml may be taken with or without food.
Vimpat 10mg/ml
Oral Solution
A calibrated measuring device is recommended to measure and deliver the prescribed dose accurately. A household teaspoon or tablespoon is not an adequate measuring device.
Vimpat 10mg/ml Injection
Vimpat 10mg/ml injection can be administered intravenously without further dilution or may be mixed with diluents listed below. The diluted solution should not be stored for more than 4 hours at room temperature.
Diluents:
Sodium Chloride Injection 0.9% (w/v)
Dextrose Injection 5% (w/v)
Lactated Ringer's Injection
Product with particulate matter or discoloration should not be used. Any unused portion of Vimpat 10mg/ml injection should be discarded.
How supplied
Dosage Forms And Strengths
- 50 mg (pink), 100 mg (dark yellow), 150 mg (salmon), and 200 mg (blue) film-coated tablets
- 200 mg/20 mL injection
- 10 mg/mL oral solution
Storage And Handling
Vimpat 10mg/ml (Vimpat 10mg/ml) Tablets 50 mg are pink, oval, film-coated tablets debossed with “SP” on one side and “50” on the other. They are supplied as follows:
Bottles of 60 NDC 0131-2477-35
Unit Dose Carton of 60 tablets [6 cards, each card contains 10 tablets] NDC 0131-2477-60
Vimpat 10mg/ml (Vimpat 10mg/ml) Tablets 100 mg are dark yellow, oval, film-coated tablets debossed with “SP” on one side and “100” on the other. They are supplied as follows:
Bottles of 60 NDC 0131-2478-35
Unit Dose Carton of 60 tablets [6 cards, each card contains 10 tablets] NDC 0131-2478-60
Vimpat 10mg/ml (Vimpat 10mg/ml) Tablets 150 mg are salmon, oval, film-coated tablets debossed with “SP” on one side and “150” on the other. They are supplied as follows:
Bottles of 60 NDC 0131-2479-35
Unit Dose Carton of 60 tablets [6 cards, each card contains 10 tablets] NDC 0131-2479-60
Vimpat 10mg/ml (Vimpat 10mg/ml) Tablets 200 mg are blue, oval, film-coated tablets debossed with “SP” on one side and “200” on the other. They are supplied as follows:
Bottles of 60 NDC 0131-2480-35
Unit Dose Carton of 60 tablets [6 cards, each card contains 10 tablets] NDC 0131-2480-60
Vimpat 10mg/ml (Vimpat 10mg/ml) injection 200 mg/20 mL is a clear, colorless sterile solution supplied in 20 mL colorless single-use glass vials.
200 mg/20 mL vial in cartons of 10 vials NDC 0131-1810-67
Vimpat 10mg/ml (Vimpat 10mg/ml) oral solution 10 mg/mL is a clear, colorless to yellow or yellow-brown, strawberry-flavored liquid. It is supplied in PET bottles as follows:
200 mL bottles NDC 0131-5410-71
465 mL bottles NDC 0131-5410-70
Storage
Store at 20°C to 25°C (68°F to 77°F); excursions permitted between 15°C to 30°C (59°F to 86°F).
Do not freeze Vimpat 10mg/ml injection or oral solution. Discard any unused Vimpat 10mg/ml oral solution remaining after seven (7) weeks of first opening the bottle.
Manufactured for UCB, Inc. Smyrna, GA 30080. Revised June 2015.
See also:
What is the most important information I should know about Vimpat 10mg/ml?
You should not use this medication if you are allergic to Vimpat 10mg/ml.
Before you take Vimpat 10mg/ml, tell your doctor if you have kidney disease, liver disease, nerve problems caused by diabetes, or a serious heart condition such as "sick sinus syndrome" or "AV block" (unless you have a pacemaker), heart failure, or other severe heart disorder.
You may have thoughts about suicide while taking this medication. Your doctor will need to check you at regular visits. Do not miss any scheduled appointments.
Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, depression, anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, hyperactive (mentally or physically), or have thoughts about suicide or hurting yourself.
Keep track of the amount of medicine used from each new bottle. Vimpat 10mg/ml is a drug of abuse and you should be aware if anyone is using your medicine improperly or without a prescription.
Use Vimpat 10mg/ml solution as directed by your doctor. Check the label on the medicine for exact dosing instructions.
- Vimpat 10mg/ml solution comes with an extra patient information sheet called a Medication Guide. Read it carefully. Read it again each time you get Vimpat 10mg/ml solution refilled.
- Take Vimpat 10mg/ml solution by mouth with or without food.
- Use a measuring device marked for medicine dosing. Ask your pharmacist for help if you are unsure of how to measure your dose.
- Taking Vimpat 10mg/ml solution at the same time each day will help you remember to take it.
- Continue to take Vimpat 10mg/ml solution even if you feel well. Do not miss any doses.
- Do not suddenly stop taking Vimpat 10mg/ml solution. You may have an increased risk of seizures. If you need to stop Vimpat 10mg/ml solution, your doctor will gradually lower your dose.
- If you miss a dose of Vimpat 10mg/ml solution, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
Ask your health care provider any questions you may have about how to use Vimpat 10mg/ml solution.
There are specific as well as general uses of a drug or medicine. A medicine can be used to prevent a disease, treat a disease over a period or cure a disease. It can also be used to treat the particular symptom of the disease. The drug use depends on the form the patient takes it. It may be more useful in injection form or sometimes in tablet form. The drug can be used for a single troubling symptom or a life-threatening condition. While some medications can be stopped after few days, some drugs need to be continued for prolonged period to get the benefit from it.Vimpat 10mg/ml is used to prevent and control seizures. It is an anticonvulsant or antiepileptic drug. It works by reducing the spread of seizure activity in the brain.
How to use Vimpat 10mg/ml
Read the Medication Guide provided by your pharmacist before you start taking Vimpat 10mg/ml and each time you get a refill. If you have any questions, consult your doctor or pharmacist.
Take this medication by mouth as directed by your doctor, usually twice a day with or without food.
If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose.
Dosage is based on your medical condition and response to treatment. To reduce your risk of side effects, your doctor may direct you to start this medication at a low dose and gradually increase your dose. Follow your doctor's instructions carefully.
This medication works best when the amount of drug in your body is kept at a constant level. Therefore, take this drug at evenly spaced intervals. To help you remember, take it at the same times each day.
Do not stop taking this medication without consulting your doctor. Seizures may become worse when the drug is suddenly stopped. Your dose may need to be gradually decreased. Consult your doctor or pharmacist for more details.
Though it is very unlikely to occur, this medication can result in abnormal drug-seeking behavior (addiction/habit-forming). Do not increase your dose, take it more frequently, or use it for a longer period of time than prescribed. Properly stop this medication when so directed. This will lessen the chances of becoming addicted.
Tell your doctor right away if your seizure control worsens (such as the number of seizures increases).
See also:
What other drugs will affect Vimpat 10mg/ml?
Vimpat 10mg/ml should be used with caution in patients treated with medicinal products known to be associated with PR prolongation (eg, carbamazepine, lamotrigine, pregabalin) and in patients treated with class I antiarrhythmic drugs. However, subgroup analysis did not identify an increased magnitude of PR prolongation in patients with concomitant administration of carbamazepine or lamotrigine in clinical trials.
In vitro Data: Data generally suggest that Vimpat 10mg/ml has a low interaction potential. In vitro studies indicate that the enzymes CYP1A2, 2B6, and 2C9 are not induced and that CYP1A1, 1A2, 2A6, 2B6, 2C8, 2C9, 2D6, and 2E1 are not inhibited by Vimpat 10mg/ml at plasma concentrations observed in clinical trials. An in vitro study indicated that Vimpat 10mg/ml is not transported by P-glycoprotein in the intestine.
In vitro data show that CYP2C9, CYP2C19 and CYP3A4 are capable of catalysing the formation of the O-desmethyl metabolite.
In vivo Data: Vimpat 10mg/ml does not inhibit or induce the enzyme CYP2C19 and CYP3A4 to a clinically relevant extent.
Vimpat 10mg/ml did not affect the AUC of midazolam (metabolized by CYP3A4, Vimpat 10mg/ml given 200 mg b.i.d.) but Cmax of midazolam was slightly increased (30%). Vimpat 10mg/ml did not affect the pharmacokinetics of omeprazole (metabolised by CYP2C19 and 3A4, Vimpat 10mg/ml given 300 mg b.i.d.).
The CYP2C19 inhibitor omeprazole (40 mg q.d.) did not give rise to a clinically significant change in Vimpat 10mg/ml exposure. Thus, moderate inhibitors of CYP2C19 are unlikely to affect systemic Vimpat 10mg/ml exposure to a clinically relevant extent.
Caution is recommended in concomitant treatment with strong inhibitors of CYP2C9 (eg, fluconazole) and CYP3A4 (eg, itraconazole, ketoconazole, ritonavir, clarithromycin), which may lead to increased systemic exposure of Vimpat 10mg/ml. Such interactions have not been established in vivo but are possible based on in vitro data.
Strong enzyme inducers such as rifampicin or St. John's wort (Hypericum perforatum) may moderately reduce the systemic exposure of Vimpat 10mg/ml. Therefore, starting or ending treatment with these enzyme inducers should be done with caution.
Antiepileptic Drugs: In interaction trials, Vimpat 10mg/ml did not significantly affect the plasma concentrations of carbamazepine and valproic acid. Vimpat 10mg/ml plasma concentrations were not affected by carbamazepine and by valproic acid. A population pharmacokinetic analysis estimated that concomitant treatment with other antiepileptic drugs known to be enzyme inducers (carbamazepine, phenytoin, phenobarbital, in various doses) decreased the overall systemic exposure of Vimpat 10mg/ml by 25%.
Oral Contraceptives:
Others: Interaction trials showed that Vimpat 10mg/ml had no effect on the pharmacokinetics of digoxin. There was no clinically relevant interaction between Vimpat 10mg/ml and metformin.
No data on the interaction of Vimpat 10mg/ml with alcohol are available.
Vimpat 10mg/ml has a low protein-binding of less than 15%. Therefore, clinically relevant interactions with other drugs through competition for protein-binding sites are considered unlikely.
Incompatibilities: Tablet: Not applicable.
Solution for Infusion: Vimpat 10mg/ml must not be mixed with other medicinal products except those mentioned in Cautions for Usage.
See also:
What are the possible side effects of Vimpat 10mg/ml?
Based on the analysis of pooled placebo-controlled clinical trials in 1,308 patients with partial-onset seizures, a total of 61.9% of patients randomized to Vimpat 10mg/ml and 35.2% of patients randomized to placebo reported at least 1 adverse reaction. The most frequently reported adverse reactions with Vimpat 10mg/ml treatment were dizziness, headache, nausea and diplopia. They were usually mild to moderate in intensity. Some were dose-related and could be alleviated by reducing the dose. Incidence and severity of CNS and gastrointestinal (GI) adverse reactions usually decreased over time.
Over all controlled studies, the discontinuation rate due to adverse reactions was 12.2% for patients randomized to Vimpat 10mg/ml and 1.6% for patients randomized to placebo. The most common adverse reaction resulting in discontinuation of Vimpat 10mg/ml therapy was dizziness.
Incidence of CNS adverse reactions eg, dizziness may be higher after a loading dose.
The table shows the frequencies of adverse reactions which have been reported in pooled placebo-controlled clinical trials (with an incidence rate ≥1% in the Vimpat 10mg/ml group and which are >1% more than placebo) and post-marketing experience. The frequencies are defined as follows: Very common (≥1/10), common (≥1/100 to <1/10), uncommon (≥1/1,000 to <1/100). Within each frequency grouping, undesirable effects are presented in order of decreasing seriousness.
The use of Vimpat 10mg/ml is associated with dose-related increase in the PR interval. Adverse reactions associated with PR interval prolongation (eg, atrioventricular block, syncope, bradycardia) may occur.In clinical trials in epilepsy patients, the incidence rate of reported first degree AV block is uncommon, 0.7%, 0%, 0.5% and 0% for Vimpat 10mg/ml 200 mg, 400 mg, 600 mg or placebo, respectively. No second or higher degree AV block was seen Vimpat 10mg/ml treated patients.
The incidence rate for syncope is uncommon and did not differ between Vimpat 10mg/ml-treated epilepsy patients (0.1%) and placebo-treated epilepsy patients (0.3%).
Atrial fibrillation or flutter were not reported in short-term clinical trials; however both have been reported in open-label epilepsy trials and in post-marketing experience.
Laboratory Abnormalities: Abnormalities in liver function tests have been observed in controlled trials with Vimpat 10mg/ml in adult patients with partial-onset seizures who were taking 1-3 concomitant antiepileptic drugs. Elevations of ALT to ≥3 x upper limit of normal (ULN) occurred in 0.7% (7/935) of Vimpat 10mg/ml patients and 0% (0/356) of placebo patients.
Multiorgan Hypersensitivity Reactions:
Multiorgan hypersensitivity reactions have been reported in patients treated with some antiepileptic agents. These reactions are variable in expression but typically present with fever and rash and can be associated with involvement of different organ systems. Potential cases have been reported rarely with Vimpat 10mg/ml and if multiorgan hypersensitivity reaction is suspected, Vimpat 10mg/ml should be discontinued.Vimpat 10mg/ml is a functionalized amino acid that has activity in the maximal electroshock seizure test, and is indicated for the adjunctive treatment of partial-onset seizures and diabetic neuropathic pain. Recent studies indicate that Vimpat 10mg/ml only affects those neurons which are depolarized or active for long periods of time, typical of neurons at the focus of an epileptic seizure, as opposed to other antiepileptic drugs such as carbamazepine or lamotrigine which slow the recovery from inactivation and reduce the ability of neurons to fire action potentials.