A source close to GSK said that the company is looking to consolidate agencies within its various product categories. Roster and non-roster agencies are involved in the review. Sensodyne, the toothpaste, Piriton, the allergy treatment, and Panadol, the pain-relief medication, are among the brands under review. The Grey network creates advertising for Sensodyne, Piriton and Panadol. CHI & Partners picked up the global advertising account for the Maxinutrition sports-nutrition range in 2013.