McNeil Nutritionals awarded Red Door the contract following a competitive pitch.
Red Door associate director Jane Seaton will head up the account for the brand.
The campaign will be targeted at healthcare professionals and consumers. It will also include a programme of conferences aimed at medical practitioners.
The media relations activity will target consumer magazines and broadcast media and will be aimed at the over 40s. Red Door deputy MD Julia Harries said: ‘Younger people are also increasingly at risk, which will be reflected in our campaign.'