A highly popular class of drugs for diabetes and obesity is showing early potential to help patients with Parkinson's disease, too. But more research is needed to determine whether newer iterations of GLP-1s from Novo Nordisk and Eli Lilly may also help Parkinson's patients. The trial followed 156 people with early Parkinson's disease for a year. But one group was given an additional daily injection of Sanofi's drug, while the other was given a placebo. But use of Sanofi's drug was associated with an increased risk of gastrointestinal side effects, which are common across all GLP-1s.

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Persons: Eli Lilly, Sanofi, drugmaker Organizations: Sanofi, Novo Nordisk, The New England, French Ministry of Health, Prevention, CNBC Locations: Novo, France, The