To the largest extent possible we use the USDA database for nutritional information (US Department of Agriculture, Agricultural Research Service, Nutrient Data Laboratory. USDA National Nutrient Database for Standard Reference, Legacy Release. Current version: September 2019.).
If an ingredient isn’t listed there we use a Swedish equivalent (Livsmedelsverket) and if we’re not successful finding it there either we use the nutritional information provided on the product used.