The design will be applied across Muller Vitality yoghurts and yoghurt drinks, with each pack featuring the words 'Feel-good bacteria' alongside a jumping man icon, which Muller hopes will be seen by consumers as shorthand for good health.
The redesign, by Design Bridge, is intended to attract more consumers to the probiotic category while encouraging existing consumers to switch to Vitality.
The design revamp is also intended to differentiate the Vitality range from Muller's other brands, which include Mullerlight.
TV ads backing the Vitality yoghurt drinks break on 4 May as part of an increased spend on the brand this year.
Probiotic yoghurts and drinks contain a special strain of probiotic 'friendly' bacteria, which is said to help restore the balance of good and bad bacteria in the bowel.
Muller Vitality is the third-biggest brand in the drinking yoghurt category, behind Actimel and Yakult, with an 11.7% market share, according to ACNielsen.
It is the fastest-growing brand in the probiotics category, with sales up by 64.4% year on year.
Drinking yoghurt is the fastest-growing sector in the short-life dairy products market.
Muller spent nearly £2m on promoting its Vitality range last year, according to Nielsen Media Research. More than £1.6m went on ads for the yoghurt drinks.
The Vitality yoghurt range includes strawberry, raspberry, pineapple and cherry variants.