ProteinRx is a nutrition brand offering an alternative to conventional dairy- and plant-based protein powders. Its flagship product, ProteinRx Yeast Protein Isolate, is made by fermenting baker’s yeast and separating out the protein. The brand describes it as a complete vegan protein, with 30 grams of protein per serving and yeast as its sole protein ingredient. It contains no whey, pea, soy, rice, or hemp protein, and is positioned for people seeking options that avoid common protein sources or are easier on sensitive stomachs.

ProteinRx is designed to support everyday nutrition, workout routines, and muscle-building goals. The powder is available in unsweetened and sweetened options, with simple sweetener choices, and can be mixed into shakes, smoothies, oatmeal, and other foods. The brand highlights its mild flavor and versatility, while noting that it is not flavored with natural flavors. ProteinRx also offers a sample pack and shares educational content about yeast protein, production, and nutrition through its website, including a blog, FAQ, and product guides.