Paine Schwartz Partners, a private equity firm, has announced the acquisition of Promix, a nutrition and supplements business, Founded in 2014, Promix is known for producing a range of ‘clean’ nutritional products, including supplements, vitamins, meal replacements, and snacks, with a claim of ‘nothing artificial’. The company’s product range, including prebiotics, protein powders, bars, electrolytes, collagen, and creatine, are sold via the direct to consumer channel, as well e-commerce and …