###Human: How long is it safe to use Relibeta injection for multiple sclerosis? ###Assistant: Hello. Relibeta (Interferon Beta - 1A) is a disease-modifying agent, used to prevent relapses. It can be used for many years. It is effective in preventing relapses. It is necessary to check periodically for complete blood count and liver enzymes. Kind regards. For more information consult a neurologist online -->