Kesimpta (ofatumumab): Drug Basics and Frequently Asked Questions

Kesimpta (ofatumumab)

Drug Basics and Frequently Asked Questions

Warning Icon Are you looking for information on Arzerra (ofatumumab) for chronic lymphocytic leukemia instead?

Kesimpta (ofatumumab) is used to treat relapsing forms of multiple sclerosis (MS). It is a once-monthly injection into the stomach, thigh, or upper arm that people can do at home. Although the dosing is convenient, Kesimpta (ofatumumab) can raise the risk of infections such as the common cold or urinary tract infections (UTIs).




Monoclonal antibody


Not a controlled medication


No lower-cost generic available


Prescription only


Frequently asked questions about Kesimpta (ofatumumab)

Interactions between Kesimpta (ofatumumab) and other medications

Kesimpta (ofatumumab) may interact with certain medications or supplements. Always let your doctor and pharmacist know about any other medications or supplements (including prescribed and over-the-counter medications, vitamins, and dietary or herbal supplements) that you are currently taking. The list below does not include all possible drug interactions with Kesimpta (ofatumumab). Please note that only the generic name of each medication is listed below.

Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take.

Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

How much does Kesimpta (ofatumumab) cost?

There is currently no generic for Kesimpta (ofatumumab), so it can be expensive, even with insurance. GoodRx coupons, copay cards and patient assistance programs may help lower the cost.

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Kesimpta (brand)


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Pricing based on most commonly-filled versions: 1 pens of Kesimpta 20mg/0.4ml

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