Multiple Sclerosis (MS) is a chronic neurological disease characterized by demyelination of the brain and spine. Currently, there are several treatments designed to decrease the frequency of attacks and delay disease progression. One of these treatments, interferon beta, has shown the potential to decrease relapse rates by approximately 30%, but because the body quickly clears these proteins, patients require more frequent dosing. Another interferon therapy called pegylated interferon beta-1a (Plegridy) was released and it was shown to last longer in the body than interferon beta-1a. This is why Plegridy can be take by an injection into tissue under the skin once every 14 days. However, some of the most common side effects of interferon beta therapy include flu-like symptoms and injection skin reactions, which can often cause patients to want to stop treatment. Clinical practitioners often advise patients to take acetaminophen (Tylenol) or aspirin before the injection in order to prevent the onset or decrease the severity of flu-like symptoms. A previous study with patients taking interferon beta-1a showed that taking a low dose oral steroid (prednisone) in addiction to a medication like Tylenol reduced flu-like symptoms compared to just taking Tylenol by itself. Because Plegridy lasts longer in the body and has more convenient dosing for patients, researchers in this study decided to investigate whether taking prednisone in addition to acetaminophen before the injection would help decrease or prevent the occurrence of flu-like symptoms and injection site reactions in patients taking the therapy.
