British drugmaker GSK said on Wednesday administration of its respiratory syncytial virus (RSV) vaccine and shingles shot together generated the same immune response in a late-stage trial as separate adminstration of the vaccines.

GSK plc GSK announced positive topline results from a phase III study evaluating the co-administration of its two marketed vaccines — RSV vaccine Arexvy and shingles vaccine Shingrix — in older adults (aged 50 years and older).

GSK has turned to Brooke Shields to get the message out about shingles vaccination. | GSK has turned to Brooke Shields to get the message out about shingles vaccination. The drugmaker has worked with the model and actor to talk to female celebrities and patients aged 50 years and up about the power that comes from aging and how shingles threatens their health.

If approved, the co-administration of Arexvy and Shingrix could provide a more convenient vaccination regimen for patients and potentially bolster GSK’s faltering sales for both vaccines.

GSK released data from a Phase 3 trial evaluating the co-administration of Arexvy and Shingrix vaccines in adults 50+. The study showed a non-inferior immune response and good safety profiles. The results will support regulatory submissions to the FDA and EMA.

GSK (NYSE:GSK) announced Wednesday that its Arexvy vaccine for respiratory syncytial virus (RSV) and its Shingrix vaccine for shingles reached the main goal in a Phase 3 trial when they were co-administered in adults aged 50 and older.