No, the Zeal Advanced Formula Protein Shakes do not contain Soy PROTEIN. However, they do contain Whey and Pea Proteins.
NOTE: The Zeal Advanced Formula Protein Shakes do contain Soy Lecithin. Lecithin is an emulsifier that makes the product flow smoother during manufacturing and also gives the product a creamier texture. It is a common ingredient in food products and is derived from soybeans. (JUST IN ZEAL ADVANCED FORMULA PROTEIN SHAKES, NOT THE ZEAL WELLNESS FORMULA)
Food manufacturers are required by law to place "contains soy ingredients" on packaging for anyone who may be highly allergic to soy.