This medication is used to treat a type of multiple sclerosis that occurs when symptoms appear in cycles of worsening and improvement (relapsing/remitting multiple sclerosis-MS). It is not a cure for MS, but it is thought to help by preventing your immune system from attacking the nerves in your brain and spinal cord. It helps decrease the number of episodes of worsening and may prevent or delay disability.
Natalizumab is also used to treat a bowel condition called Crohn's disease (CD) when it is moderate to severe and/or keeps coming back. It is not a cure for CD, but it is thought to work by preventing your immune system from causing inflammation/swelling within your bowels.
Natalizumab is a protein called a monoclonal antibody.
How To Use
This medicine comes with a Medication Guide. Read it carefully before you start using natalizumab and each time you receive another dose. Ask your doctor, nurse, or pharmacist any questions that you may have about this medicine.
This medication is given by a health care professional in an infusion center, usually every 4 weeks or as directed by your doctor. This medication is mixed in a solution and injected slowly into a vein, usually over 1 hour. It should not be given as a rapid injection. You will be monitored for 1 hour after your treatment is finished to make sure you do not have a serious reaction to the medication. (See also Side Effects section.)
It is important to use this medication regularly to get the most benefit from it. Do not miss any doses without your doctor's approval.
Tell your doctor if your condition worsens. When using this medication for Crohn's disease, if your condition does not improve after 12 weeks of treatment, your doctor will need to switch your treatment plan.