The company will design and print promotional point of sale materials for both the Holland & Barrett and GNC chain of stores.
Running for two years, the contract will include both litho and digital print production but SP would not be drawn on the anticipated volumes and kit to be used for the deal.
SP Group business development director Neil Jenkinson said the contract win was another testament to the group's strong service offering.
"This contract provides an opportunity to demonstrate the quality of our consultancy, products and services and to demonstrate the value added offering our positioning as part of the St Ives Group provides," he continued.
According to Emma Hobbs, group retail marketing manager for NBTY, SP's standing as a "UK marketing solutions provider" was a key factor in the decision.
"That, coupled with the fact that the company and group look after the whole project from concept to design manufacture and delivery, is a much-added benefit," she added.