Kesimpta is a brand-name injection prescribed for relapsing forms of multiple sclerosis and clinically isolated syndrome. Kesimpta contains the active ingredient ofatumumab.

The Food and Drug Administration (FDA) has approved Kesimpta to treat the following in adults:

  • Relapsing-remitting multiple sclerosis (RRMS): With RRMS, the condition changes between stages of remission and relapse. During remission, you have few or no symptoms. During a relapse, symptoms flare up.
  • Active secondary progressive (SPMS): With SPMS, you have no periods of remission. Symptoms continue to worsen over time.
  • Clinically isolated syndrome (CIS): With CIS, you experience symptoms similar to those of MS in an episode lasting 24 hours or more. Sometimes, CIS may become MS, but in other cases, it may not.

For information about the uses of Kesimpta, see the “Kesimpta for MS” section.

Drug details

Here is some key information about Kesimpta.

  • Drug class: CD20-directed cytolytic antibody, which is a type of monoclonal antibody
  • Drug form: subcutaneous injection
  • Generic or biosimilar available? no
  • Prescription required? yes
  • Controlled substance? no
  • Year of FDA approval: 2020

Kesimpta is available only as a brand-name medication. It’s a biologic drug, which is a medication made from living cells.

Because it’s not possible to copy living cells in a lab, biologic drugs don’t have generic forms. Instead, they may have a biosimilar form. A biosimilar form is a drug that has been shown to be just as safe and effective as the original biologic form. Kesimpta is not currently available in biosimilar form.

Biosimilar drugs usually cost less than brand-name biologic drugs.

Kesimpta can cause mild or serious side effects. The following lists contain some of the key side effects that may occur while using Kesimpta. These lists don’t include all possible side effects.

For more information about the possible side effects of Kesimpta, talk with your doctor or pharmacist. They can give you tips on how to deal with any side effects that may concern or bother you.

Note: The Food and Drug Administration (FDA) tracks side effects of drugs it has approved. If you would like to notify the FDA about a side effect you’ve had with Kesimpta, you can do so through MedWatch.

Mild side effects

Mild side effects* of Kesimpta can include:

Most of these side effects may go away within a few days to a couple of weeks. But if they become more severe or don’t go away, talk with your doctor or pharmacist.

* This is a partial list of mild side effects from Kesimpta. To learn about other mild side effects, talk with your doctor or pharmacist or view Kesimpta’s prescribing information.

Serious side effects

Serious side effects from Kesimpta aren’t common, but they can occur. Call your doctor right away if you have serious side effects. Call 911 or your local emergency number if your symptoms feel life threatening or if you think you’re having a medical emergency.

Serious side effects and their symptoms can include:

  • Weakened immune system, which could cause infections that may become serious or fatal. Symptoms can include:
    • an infection that won’t go away
    • an infection that keeps coming back
    • getting sick more easily or more often than usual
  • Low level of immunoglobulins (a type of protein). Symptoms can include:
    • frequent infections
    • rash
    • fever
  • Injection-related reactions. Symptoms can include:
    • fever
    • chills
    • muscle aches
    • difficulty breathing
    • feeling dizzy or faint
  • Hepatitis B reactivation (flare-up of the hepatitis B virus).*
  • Progressive multifocal leukoencephalopathy (a rare but very serious brain infection).*
  • Allergic reaction.*

* For more information about this side effect, see “Side effect details.”

Side effect details

Here are some details on certain side effects this drug may cause.

Hepatitis B reactivation

If a person has had hepatitis B, the virus that causes hepatitis B could become active again. This is known as hepatitis B reactivation. Symptoms may include diarrhea, abdomen pain, and jaundice.

Hepatitis B reactivation didn’t occur in clinical trials of people with multiple sclerosis (MS) or clinically isolated syndrome (CIS) who received Kesimpta. But this side effect did occur in clinical trials of people with chronic lymphocytic leukemia who received ofatumumab (Arzerra). Ofatumumab is the active drug ingredient in both Arzerra and Kesimpta.

The Food and Drug Administration (FDA) often requires a drug’s prescribing information to include potential serious risks. This is regardless of how rare the side effect may be or whether there’s a known link between the side effect and the medication.

Because Kesimpta contains ofatumumab, hepatitis B reactivation is included in Kesimpta’s prescribing information.

If you have any questions about hepatitis B reactivation, talk with your doctor.

Progressive multifocal leukoencephalopathy

Progressive multifocal leukoencephalopathy (PML) is a rare but very serious brain infection. Symptoms may include difficulty walking or speaking, changes in personality, and facial drooping.

PML didn’t occur in clinical trials of people with MS or CIS who used Kesimpta. But this side effect did occur in clinical trials of people with chronic lymphocytic leukemia who used ofatumumab (Arzerra). Ofatumumab is the active drug ingredient in both Arzerra and Kesimpta.

The FDA often requires a drug’s prescribing information to include potential serious risks. This is no matter how rare the side effect may be or whether there’s a known link between the side effect and the medication.

Because Kesimpta contains ofatumumab, PML is included in Kesimpta’s prescribing information.

If you have any questions about PML, talk with your doctor.

Allergic reaction

As with most drugs, some people can have an allergic reaction after using Kesimpta. But it’s not known how often allergic reactions may have occurred in people using Kesimpta in clinical trials.

Symptoms of a mild allergic reaction can include:

A more severe allergic reaction is rare but possible. Symptoms of a severe allergic reaction can include:

  • swelling under your skin, typically in your eyelids, lips, hands, or feet
  • swelling of your tongue, mouth, or throat
  • trouble breathing

Call your doctor right away if you have an allergic reaction to Kesimpta, as the reaction could become severe. Call 911 or your local emergency number if your symptoms feel life threatening or if you think you’re having a medical emergency.

As with all medications, the cost of Kesimpta can vary. For instance, the drug’s cost per month and cost per year may differ between people. The actual price you’ll pay depends on your insurance plan, your location, and the pharmacy you use.

Keep in mind that you may be able to get a 90-day supply of Kesimpta. If approved by your insurance company, getting a 90-day supply of the drug could reduce your number of trips to the pharmacy and help lower the cost. If you’re interested in this option, check with your doctor or your insurance company.

It’s important to note that you may have to get Kesimpta at a specialty pharmacy. This type of pharmacy is authorized to carry specialty medications. These are drugs that may be expensive or may require help from healthcare professionals to be used safely and effectively.

Before approving coverage for Kesimpta, your insurance company may require you to get prior authorization. This means that your doctor and insurance company will need to communicate about your prescription before the insurance company will cover the drug. The insurance company will review the prior authorization request and decide whether the drug will be covered.

If you’re not sure whether you’ll need to get prior authorization for Kesimpta, contact your insurance company.

Financial and insurance assistance

If you need financial support to pay for Kesimpta, or if you need help understanding your insurance coverage, help is available.

Novartis Pharmaceuticals, the manufacturer of Kesimpta, offers ways to help lower the cost of the drug. For more information and to find out if you’re eligible for support, call 855-537-4678 or visit the drug website.

Mail-order pharmacies

Kesimpta may be available through a mail-order pharmacy. Using this service may help lower the drug’s cost and allow you to get your medication without leaving home.

If recommended by your doctor, you may be able to receive a 90-day supply of Kesimpta, so there’s less concern about running out of the medication. If you’re interested in this option, check with your doctor and your insurance company. Some Medicare plans may help cover the cost of mail-order medications.

If you don’t have insurance, you can ask your doctor or pharmacist about online pharmacy options.

Generic or biosimilar version

Kesimpta is available only as a brand-name medication. It’s a biologic drug, which is a medication made from living cells.

Because it’s not possible to copy living cells in a lab, biologic drugs don’t have generic forms. Instead, they may have a biosimilar form. A biosimilar form is a drug that has been shown to be just as safe and effective as the original biologic form. Kesimpta is not currently available in biosimilar form.

Biosimilar drugs usually cost less than brand-name biologic drugs.

Other drugs are available that can treat multiple sclerosis (MS) and clinically isolated syndrome (CIS). To learn about these conditions, see the “Kesimpta for MS” section.

Some medications may be a better fit for you than others. If you’re interested in finding an alternative to Kesimpta, talk with your doctor. They can tell you about other medications that may work well for you.

Note: Some of the drugs listed here are used off-label to treat these specific conditions. Off-label drug use is when a drug approved by the Food and Drug Administration (FDA) for one purpose is used for a different purpose.

Examples of other drugs that may be used to treat MS and CIS include:

Here are answers to some frequently asked questions about Kesimpta.

What should I know about Kesimpta vs. Ocrevus?

Like Kesimpta, Ocrevus is FDA approved to treat relapsing-remitting multiple sclerosis (RRMS), active secondary progressive MS (SPMS), and clinically isolated syndrome (CIS) in adults. However, Ocrevus is also approved to treat primary progressive MS (PPMS) in adults.

Kesimpta is given as a subcutaneous injection. Ocrevus, on the other hand, is given by intravenous (IV) infusion.

If you’d like to know more about how these drugs compare, talk with your doctor. They can tell you about possible side effects of each drug. And they can recommend whether one option may be better for you than the other.

Does Kesimpta cause hair loss or weight gain?

No, these weren’t reported as side effects in clinical trials of the drug.

Symptoms of MS, which Kesimpta is used to treat, may lead to weight changes. For example, difficulty walking or exercising may lead to weight gain.

It’s possible that hair loss can be a side effect of other medications used to treat MS. This includes the drug methotrexate.

Keep in mind that stress can also contribute to both hair loss and weight changes.

If you’re concerned about hair loss or weight gain while you’re receiving Kesimpta, tell your doctor. They can suggest ways to help you manage these symptoms.

Will I need to have lab tests done while I’m using Kesimpta?

Yes, you’ll need to have blood tests done while you’re using Kesimpta. Before you start treatment, your doctor will order blood tests to check for infections, such as hepatitis B. They’ll also look at your immunoglobulin levels, which help show how well your immune system is working. (An immunoglobulin is a type of protein.)

Your doctor will continue to monitor your immunoglobulin levels throughout your Kesimpta treatment. If your levels become too low, they may have you stop using the drug. Low immunoglobulin levels may cause you to develop infections easier than usual, which may be serious.

Before you start using Kesimpta, talk with your doctor about blood tests that you need.

Is Kesimpta a chemotherapy or immunosuppressant drug?

Kesimpta is not a chemotherapy drug, but it is an immunosuppressant.

Chemotherapy works by killing rapidly multiplying cells in the body. It’s typically used to treat cancer because cancer cells usually multiply quickly. Some chemotherapy drugs may be used to treat MS. An example is mitoxantrone.

Kesimpta is a type of drug called an immunosuppressant, which aims to weaken the immune system. It’s believed that Kesimpta works by decreasing the activity of certain parts of your immune system. This helps ease the symptoms of multiple sclerosis (MS). For more information on how Kesimpta works, see the “How Kesimpta works” section.

If I used Kesimpta during pregnancy, can my child receive vaccines on schedule?

It depends. If you use Kesimpta during pregnancy, the drug may affect both your immune system and that of the fetus. Once your child is born, their doctor will order blood tests to check how strong your child’s immune system is.

Your child should not receive any live vaccines until their immune system is strong enough. Live vaccines contain live but weakened pieces of the virus or bacterium they’re meant to defend against. When an immune system is strong, live vaccines usually won’t cause infection. But live vaccines may cause infection if an immune system is not strong enough.

Once your child is born, they should be able to receive non-live vaccines on schedule. Non-live vaccines don’t contain live viruses or bacteria. So they aren’t likely to cause symptoms of the illness the vaccine is meant to prevent.

However, your child’s doctor may order blood tests to check whether the non-live vaccine is working. This is because non-live vaccines require the immune system to be strong in order to act properly. If your child has a weakened immune system, non-live vaccines may not work as well as usual.

For information on which vaccines are live and which are non-live, see “Live vaccines” and “Non-live vaccines” in the “Kesimpta interactions” section. If you have any questions about your child’s vaccine schedule, be sure to talk with their doctor.

The Food and Drug Administration (FDA) approves prescription drugs such as Kesimpta to treat certain conditions, including certain types of multiple sclerosis (MS). A drug’s approved uses are also called its indications.

Kesimpta is FDA-approved to treat the following conditions in adults:

  • Relapsing-remitting multiple sclerosis (RRMS): With RRMS, the condition changes between stages of remission and relapse. During remission, you have few or no symptoms. During a relapse, symptoms flare up.
  • Active secondary progressive MS (SPMS): With SPMS, there are no periods of remission. Symptoms continue to worsen over time.
  • Clinically isolated syndrome (CIS): With CIS, you experience symptoms similar to those of MS in an episode lasting 24 hours or more. CIS also involves your immune system attacking the myelin sheath. Sometimes, CIS may become MS, but in other cases, it may not.

MS explained

MS is a condition that affects your brain and spinal cord. With MS, your immune system mistakenly attacks the myelin sheath (the covering over your nerves). Your nerves help your brain communicate with the rest of your body. If the myelin sheath doesn’t work properly, your brain can’t communicate easily with the rest of your body. This may lead to the symptoms of MS, including vision changes, difficulty walking, and fatigue.

For more information about MS, see our MS hub.

Effectiveness for MS and CIS

Kesimpta has been shown to be an effective treatment option for RRMS, SPMS, and CIS. For details on how Kesimpta performed in clinical trials, see the Kesimpta prescribing information.

Kesimpta and children

Kesimpta is approved for use only in adults. At this time, it’s not known whether Kesimpta is a safe and effective treatment option for children with MS or CIS.

If you’re interested in MS or CIS treatments for your child, talk with your doctor.

The following information describes Kesimpta dosages that are commonly used or recommended. However, be sure to use the dosage your doctor prescribes for you. Your doctor will determine the best dosage to fit your needs.

Drug forms and strengths

Kesimpta comes as a liquid solution that’s given as a subcutaneous injection. The drug comes in two forms:

  • single-dose prefilled Sensoready pen
  • single-dose prefilled syringe

Your doctor can determine which form is right for you. Kesimpta is available in one strength: 20 milligrams (mg) of the drug in 0.4 milliliters (mL) of liquid solution.

Dosage for multiple sclerosis and clinically isolated syndrome

Kesimpta is approved to treat the following in adults:*

For this purpose, the usual dose of Kesimpta is one 20-mg injection into your thigh or abdomen (or the outer part of your upper arm if a caregiver administers your injections). Your doctor or another healthcare professional will first show you or your caregiver how to properly give a dose of medication. After that, you or your caregiver can inject the doses at home. (For more information on Kesimpta injections, see the “How to use Kesimpta” section.)

You’ll use Kesimpta more frequently at the beginning of treatment than later on. These starting doses are called loading doses, and they’re meant to help start treating your symptoms quickly. Here’s the typical dosing schedule:

  • Week 0: first dose
  • Week 1: second dose
  • Week 2: third dose
  • Week 3: no dose
  • Week 4: fourth dose

After your first four doses, you’ll receive a dose of Kesimpta once every month.

* For more information on these conditions, see the “Kesimpta for MS” section.

What if I miss a dose?

If you miss a dose of Kesimpta during your first 4 weeks of treatment, talk with your doctor or pharmacist. They can advise you on what to do.

If you miss a dose of Kesimpta after your first 4 weeks of treatment, give yourself a dose as soon as you remember, even if it’s almost time for your next dose. After that, your injections should continue to be 1 month apart, based on your new schedule from the day you remembered your dose.

If you have any questions about when to take your next dose, talk with your doctor or pharmacist.

To help make sure that you don’t miss a dose, try using a medication reminder. This can include setting an alarm or timer on your phone or downloading a reminder app. A kitchen timer can work, too.

Will I need to use this drug long term?

Kesimpta is meant to be used as a long-term treatment. If you and your doctor determine that Kesimpta is safe and effective for you, you’ll likely use it long term.

Kesimpta is used to treat certain forms of multiple sclerosis (MS) and clinically isolated syndrome (CIS). MS is a condition in which your immune system is overactive. It mistakenly attacks the myelin sheath (the covering over your nerves).

CIS also involves your immune system attacking the myelin sheath. With CIS, you experience symptoms similar to those of MS in an episode lasting 24 hours or more. CIS may or may not develop into MS.

Your nerves help your brain communicate with the rest of your body. If the myelin sheath doesn’t work properly, your brain can’t communicate easily with the rest of your body.

Kesimpta’s mechanism of action (how it works) to treat MS and CIS isn’t known exactly. But it’s believed that the drug attaches to a protein called CD20. This protein is on cells in your immune system called lymphocytes. When Kesimpta attaches to lymphocytes, it kills them.

Because MS is a condition in which your immune system is overactive, Kesimpta likely works by decreasing the activity of your immune system so that it doesn’t destroy your myelin sheath.

How long does it take to work?

Kesimpta should begin working as soon as you have your first dose. But it may take a few weeks before you notice your symptoms easing. This is because the drug takes some time to relieve your symptoms. For the first few weeks of Kesimpta treatment, you’ll receive a dose once weekly. This helps the medication to begin working quickly.

You should use Kesimpta according to your doctor’s or healthcare professional’s instructions.

Kesimpta comes as a liquid solution that’s administered as a subcutaneous injection. The drug comes in two forms:

  • single-dose prefilled Sensoready pen
  • single-dose prefilled syringe

Your doctor can recommend the form that is right for you.

Injection information

Your doctor or another healthcare professional will first show you or your caregiver how to inject the medication. After that, you or your caregiver can inject the doses at home.

You should inject Kesimpta into your thigh or abdomen. If a caregiver administers the drug, they may also inject the drug into the outer part of your upper arm. Be sure to avoid any areas with moles, scars, or stretch marks. Also avoid injecting into bruised, discolored, hard, or rough, dry skin.

For more information on how to inject Kesimpta using the Sensoready pen, see the drug website. You’ll find step-by-step instructions and videos.

After injection

Once you inject a dose of Kesimpta, be sure to discard the pen or syringe that you use. These are for one-time use only and should not be used again. To learn more about disposal, see the “Kesimpta expiration, storage, and disposal” section.

When to use

When you first begin Kesimpta treatment, you’ll use the medication almost every week, then switch to once per month. For details, see the “Kesimpta dosage” section.

You should try to take your dose of Kesimpta on the same day of the week throughout your treatment. This helps make sure that you have a consistent amount of medication working in your body at all times. That way, the drug can be more effective at treating your condition.

To help make sure that you don’t miss a dose, try using a medication reminder. This can include setting an alarm or timer on your phone or downloading a reminder app. A kitchen timer can work, too.

When you get Kesimpta from the pharmacy, the pharmacist will add an expiration date to the label on the box. This date is typically 1 year from the date they dispensed the medication.

The expiration date helps guarantee that the medication remains effective during this time. The current stance of the Food and Drug Administration (FDA) is to avoid using expired medications. If you have unused medication that has gone past the expiration date, ask your pharmacist how to correctly dispose of it.

Storage

How long a medication remains good to use can depend on many factors, including how and where you store the medication.

You should store Kesimpta Sensoready pens and syringes in the refrigerator at 36°F to 46°F (2°C to 8°C). To protect the medication from light, keep the pens and syringes in their original boxes until you’re ready to use them.

It’s important to not shake or freeze Kesimpta.

Disposal

Right after you’ve used a syringe, needle, or autoinjector, dispose of it in an FDA-approved sharps disposal container. This helps prevent others, including children and pets, from using the drug by accident or harming themselves with the needle. You can buy a sharps container online or ask your doctor, pharmacist, or health insurance company where to get one.

This article provides several useful tips on medication disposal. You can also ask your pharmacist for information about how to dispose of your medication.

There are no known interactions between Kesimpta and alcohol. However, alcohol may make some multiple sclerosis (MS) symptoms worse. Both alcohol use and MS may cause difficulty walking or changes in vision. So if you have these MS symptoms, drinking alcohol may make them more severe.

If you drink alcohol, talk with your doctor about the amount that may be safe to drink before you start treatment with Kesimpta.

Kesimpta can interact with several other medications. It’s not known to interact with herbs, supplements, or foods.

Different interactions can cause different effects. For instance, some interactions can interfere with how well a drug works. Other interactions can increase the number of side effects or make them more severe.

Kesimpta and other medications

This section lists medications that can interact with Kesimpta. The list doesn’t contain all drugs that may interact with Kesimpta.

Before using Kesimpta, talk with your doctor and pharmacist. Tell them about all prescription, over-the-counter, and other drugs you take. Also tell them about any vitamins, herbs, and supplements you use. Sharing this information can help you avoid potential interactions.

If you have questions about drug interactions that may affect you, ask your doctor or pharmacist.

Types of drugs that can interact with Kesimpta include medications that weaken your immune system. Kesimpta itself may weaken your immune system. So using Kesimpta with these medications may cause your immune system to become even weaker. This could increase the risk of infection.

Examples of these drugs include:

If you need to take any drugs that weaken your immune system during your treatment with Kesimpta, talk with your doctor or pharmacist. They may recommend monitoring you more often than usual for infection.

Kesimpta and herbs and supplements

There aren’t any herbs or supplements that have been specifically reported to interact with Kesimpta. However, you should still check with your doctor or pharmacist before using any of these products while receiving Kesimpta.

Kesimpta and foods

There aren’t any foods that have been specifically reported to interact with Kesimpta. If you have any questions about eating certain foods with Kesimpta, talk with your doctor.

Kesimpta and vaccines

Before you begin treatment with Kesimpta, your doctor will typically discuss vaccines with you. They’ll likely recommend that you get any immunizations you need prior to starting treatment with the medication. This should help avoid interactions between Kesimpta and vaccines.

Live vaccines

You should not get any live (active) vaccines 4 weeks before you start Kesimpta or while you’re using the medication.

You should also avoid live vaccines after you stop Kesimpta treatment, until your doctor recommends that you can receive them. This is because it may take time for your immune system to strengthen after you stop using Kesimpta. You should not receive any live vaccines until your immune system has recovered.

Live vaccines contain live but weakened pieces of the virus or bacterium they’re meant to defend against. When your immune system is strong, live vaccines usually won’t cause infection.

Kesimpta may weaken your immune system. So if you get a live vaccine, your immune system may not be able to fight the virus or bacterium. This may cause you to become sick or develop symptoms of the illness the vaccine is meant to prevent.

Examples of live vaccines include:

Non-live vaccines

If possible, you should avoid getting non-live (inactive) vaccines for 2 weeks before you start using Kesimpta and during your treatment.

Non-live vaccines don’t contain live viruses or bacteria. So you’re not likely to become sick or develop symptoms of the illness the vaccine is meant to prevent.

But non-live vaccines do require your immune system to be working well for the vaccines to act correctly. Kesimpta may weaken your immune system. So if you get a non-live vaccine during your treatment, it may not work as well as usual.

Examples of non-live vaccines include:

If you have any questions about which vaccines you may need or the best time to get a vaccine while you are using Kesimpta, talk with your doctor or pharmacist. They will be able to help you determine the best vaccination schedule for you.

If you can become pregnant, are breastfeeding, or are using birth control, it’s important to consider whether Kesimpta is a safe choice for you.

You can refer to this article for more information. If you have additional questions, talk with your doctor.

Before using Kesimpta, talk with your doctor about your health history. Kesimpta may not be right for you if you have certain medical conditions or other factors affecting your health. These include the ones mentioned here.

For more information about the potential adverse effects of Kesimpta, see the “Kesimpta side effects” section.

Hepatitis B: If you have active hepatitis B, you should not use Kesimpta. “Active” means you currently have the hepatitis B virus in your body. Your doctor will order lab tests to confirm this before you start using Kesimpta. If you do have hepatitis B, they’ll treat it before you begin using the drug.

Be sure to tell your doctor if you have a history of hepatitis B. The virus that causes hepatitis B could be in your system and become active again. Your doctor can determine whether Kesimpta is right for you.

Active infections: If you have an infection, including progressive multifocal leukoencephalopathy (PML), your doctor will treat the infection before starting Kesimpta. This is because Kesimpta may weaken your immune system, which can make it harder for your body to fight an infection. Be sure to tell your doctor about any infections that you have before you start using Kesimpta.

Recent vaccination: Before you start using Kesimpta, tell your doctor about any recent vaccinations that you’ve had. They may want you to wait a few weeks after you receive a vaccine before you begin Kesimpta treatment. For more information about how vaccines and Kesimpta interact, see “Kesimpta and vaccines” in the “Kesimpta interactions” section.

Allergic reaction: If you’ve had an allergic reaction to Kesimpta or any of its ingredients, you should not use Kesimpta. Ask your doctor what other medications are better options for you.

Pregnancy: It is unknown whether Kesimpta is safe to use during pregnancy. If you’re pregnant or planning to become pregnant, talk with your doctor. For more information, see this article.

Breastfeeding: It is unknown whether Kesimpta is safe to use while breastfeeding. If you’re breastfeeding or thinking about it, talk with your doctor before using Kesimpta. For more information, see this article.

Do not use more Kesimpta than your doctor recommends. For some drugs, doing so may lead to unwanted side effects or overdose.

What to do in case you use too much Kesimpta

If you think you’ve used too much of this drug, call your doctor. You can also call America’s Poison Centers at 800-222-1222 or use its online tool. But if your symptoms are severe, call 911 or your local emergency number, or go to the nearest emergency room right away.

Disclaimer: Medical News Today has made every effort to make certain that all information is factually correct, comprehensive, and up to date. However, this article should not be used as a substitute for the knowledge and expertise of a licensed healthcare professional. You should always consult your doctor or another healthcare professional before taking any medication. The drug information contained herein is subject to change and is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. The absence of warnings or other information for a given drug does not indicate that the drug or drug combination is safe, effective, or appropriate for all patients or all specific uses.