There is no publicly available information regarding the specific protein powder or supplements that James Corden takes. As a prominent figure in the entertainment industry, his health and fitness regimen may not be widely documented. Generally, celebrities might choose supplements based on personal health needs or fitness goals.

James Corden announced a partnership with Heineken in May 2017, which included an exclusive sponsorship of 'The Late Late Show's' famous on-set bar, bringing Heineken branding to the show's viewers.

James Corden partnered with WW (formerly Weight Watchers) in a multi-year, global partnership aimed at promoting health and wellness. The collaboration focuses on Corden following the myWW+ program and offering 100,000 digital memberships to those facing financial challenges.

James Corden starred in a humorous YouTube campaign for SK-II alongside actress Chloe Grace Moretz, promoting the brand's Pitera Essence through tongue-in-cheek scenarios.

James Corden co-developed the official merchandise range for BBC Studios's sitcom 'Gavin & Stacey,' launched to celebrate the show's Christmas Day finale and its iconic humor.

James Corden collaborated with Keurig for the 'Brew the Love' campaign in 2018, where he showcased the new Keurig K-Select coffee maker. The campaign aimed to encourage Americans to embrace a modern way of enjoying an exceptional cup of coffee.