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What is Mayzent (siponimod) and how is it used?
Mayzent is a prescription medicine that is used to treat relapsing forms of multiple sclerosis, to include clinically isolated syndrome, relapsing-remitting disease, and active secondary progressive disease, in adults. It is not known if Mayzent is safe and effective in children.
What are the most important side effects and other facts about Mayzent (siponimod)?
1. Mayzent may cause serious side effects, including: Slow heart rate (bradycardia or bradyarrhythmia) when you start taking Mayzent. Mayzent can cause your heart rate to slow down, especially after you take your first dose. You should have a test to check the electrical activity of your heart called an electrocardiogram (ECG) before you take your first dose of Mayzent.
During the initial updosing period (4 days for the 1 mg daily dose or 5 days for the 2 mg daily dose), if you miss 1 or more doses of Mayzent, you need to restart the updosing. Call your healthcare provider if you miss a dose of Mayzent.
2. Infections. Mayzent can increase your risk of serious infections that can be life-threatening and cause death. Mayzent lowers the number of white blood cells (lymphocytes) in your blood. This will usually go back to normal within 3 to 4 weeks of stopping treatment. Your healthcare provider should review a recent blood test of your white blood cells before you start taking Mayzent.
Call your healthcare provider right away if you have any of these symptoms of an infection during treatment with Mayzent and for 3 to 4 weeks after your last dose of Mayzent:
3. A problem with your vision called macular edema. Macular edema can cause some of the same vision symptoms as a multiple sclerosis (MS) attack (optic neuritis). You may not notice any symptoms with macular edema. If macular edema happens, it usually starts in the first 1 to 4 months after your start taking Mayzent. Your healthcare provider should test your vision before you start taking Mayzent and any time you notice vision changes during treatment with Mayzent. Your risk of macular edema is higher if you have diabetes or have had an inflammation of your eye called uveitis.
Call your healthcare provider right away if you have any of the following:
- blurriness or shadows in the center of your vision
- sensitivity to light
- a blind spot in the center of your vision
- unusually colored (tinted) vision
Other side effects of Mayzent (siponimod)
Mayzent may cause serious side effects, including:
- increased blood pressure. Your healthcare provider should check your blood pressure during treatment with Mayzent.
- liver problems. Mayzent may cause liver problems. Your healthcare provider should do blood tests to check your liver before you start taking Mayzent. Call your healthcare provider right away if you have any of the following symptoms of liver problems:
- swelling and narrowing of the blood vessels in your brain. A condition called PRES (Posterior Reversible Encephalopathy Syndrome) has happened with drugs in the same class. Symptoms of PRES usually get better when you stop taking Mayzent. However, if left untreated, it may lead to a stroke. Call your healthcare provider right away if you have any of the following symptoms:
- sudden severe headache
- sudden loss of vision or other changes in your vision
- sudden confusion
- severe worsening of multiple sclerosis after stopping Mayzent. When Mayzent is stopped, symptoms of MS may return and become worse compared to before or during treatment. Always talk to your doctor before you stop taking Mayzent for any reason. Tell your healthcare provider if you have worsening symptoms of MS after stopping Mayzent.
The most common side effects of Mayzent include:
Tell your healthcare provider if you have any side effects that bother you or that do not go away.
These are not all of the possible side effects of Mayzent. For more information, ask your healthcare provider or pharmacist. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is the dosage for Mayzent (siponimod)?
The daily maintenance dose of Mayzent is either 1 mg or 2 mg, depending on your CYP2C9 genotype. Ask your healthcare provider if you are not sure about your daily maintenance dose.
Start your treatment with Mayzent using the following titration schedule:
Table 2 : Dose Titration Regimen to Reach MAYZENT 1 mg Maintenance Dosage
|Titration||Titration Dose||Titration Regimen|
|Day 1||0.25 mg||1 x 0.25 mg|
|Day 2||0.25 mg||1 x 0.25 mg|
|Day 3||0.50 mg||2 x 0.25 mg|
|Day 4||0.75 mg||3 x 0.25 mg|
- Take Mayzent exactly as your healthcare provider tells you. Do not change your dose or stop taking Mayzent unless your healthcare provider tells you to.
- Take Mayzent 1 time each day.
- Take Mayzent with or without food.
- If you miss 1 or more doses of Mayzent duringthe initial dose titration, you need to restart the medication.
- If you miss a dose of Mayzent after the initial dose-titration, take it as soon as you remember.
- If Mayzent treatment is stopped for 4 days in a row, treatment has to be restarted with the titration.
- Do not stop taking Mayzent without talking with your healthcare provider first.
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Do not take Mayzent if you:
What should I tell my healthcare provider before taking Mayzent?
Before taking Mayzent, tell your healthcare provider about all of your medical conditions, including if you:
- have an irregular or abnormal heartbeat
- a history of stroke or other diseases related to blood vessels in the brain
- breathing problems, including during your sleep
- a fever or infection, or you are unable to fight infections due to a disease or taking medicines that lower your immune system. Tell your healthcare provider if you have had chicken poxor have received the vaccine for chicken pox. Your healthcare provider may do a blood test for chicken pox virus. You may need to get the full course of vaccine for chicken pox and then wait 1 month before you start taking Mayzent.
- have slow heart rate
- have liver problems
- have diabetes
- have eye problems, especially an inflammation of the eye called uveitis
- have high blood pressure
- are pregnant or plan to become pregnant. Mayzent may harm your unborn baby. Talk to your healthcare provider right away if you become pregnant while taking Mayzent or if you become pregnant within 10 days after you stop taking Mayzent.
- If you are a woman who can become pregnant, you should use effective birth control during your treatment with Mayzent and for at least 10 days after you stop taking Mayzent.
- are breastfeeding or plan to breastfeed. It is not known if Mayzent passes into your breast milk. Talk to your healthcare provider about the best way to feed your baby if you take Mayzent.
- Tell your healthcare provider about all the medicines you take, including prescription medicines, over-the-counter medicines, vitamins, and herbal supplements. Especially tell your healthcare provider if you:
- take medicines to control your heart rhythm (antiarrhythmics), or blood pressure (antihypertensives), or heart beat (such as calcium channel blockers or beta-blockers)
- take medicines that affect your immune system, such as beta-interferon or glatiramer acetate, or any of these medicines that you took in the past
- have recently received a live vaccine. You should avoid receiving live vaccines during treatment with Mayzent. Mayzent should be stopped 1 week before and for 4 weeks after receiving a live vaccine. If you receive a live vaccine, you may get the infection the vaccine was meant to prevent. Vaccines may not work as well when given during treatment with Mayzent.
Know the medicines you take. Keep a list of your medicines with you to show your healthcare provider and pharmacist when you get a new medicine.
Using Mayzent and other medicines together may affect each other causing serious side effects.
Medically Reviewed on 4/17/2020
Article courtesy of the U.S. Food and Drug Administration