You don't need both. The new treatment is only a bi-monthly injection. Study participants only needs both the injection and daily oral medication due to the st

You don't need both. The new treatment is only a bi-monthly injection. Study participants only needs both the injection and daily oral medication due to the study design. Since they were comparing the new (injection) treatment with an old (oral) treatment, participants needed to go through the motions of both so that they could be properly blinded.