Most Common Incompatible Ingredients for Vegan Diets

The most common incompatible ingredients found in products.

Ingredient Total Foods Diet Description Compatibility
Milk 79,030 Vegan Not vegan if derived from an animal. Check the ingredients. Never Vegan
Natural 53,895 Vegan Ingredients are not synthetic or artificial, but extracted directly from plants or animal products Sometimes Vegan
Citric 35,492 Vegan Emulsifier - May contain animal fat as it is derived from Glycerin/Glycerol. Sometimes Vegan
Dextrose 29,187 Vegan Sometimes derived from animal tissues and fluids. Check the label to determine if plant based. Sometimes Vegan
Glucose 22,563 Vegan Sometimes derived from animal tissues and fluids. Check the label to determine if plant based. Sometimes Vegan
Calcium 22,556 Vegan May be derived from the shells of marine organisms, snails, and eggs. Check the label to be sure. Sometimes Vegan
Riboflavin 21,806 Vegan May contain milk. Sometimes Vegan
Vitamin 16,160 Vegan Likely animal based but may be plant based. Check the label to verify the source of the ingredient. Sometimes Vegan
Eggs 15,861 Vegan This product contains egg in one form or another. Not vegan friendly. Never Vegan
Whey 15,110 Vegan The watery part of milk that remains after the formation of curds. Never Vegan
Cheese 13,197 Vegan Most likely dairy based. Some forms are plant based and should be clearly labeled if true. Never Vegan
Chocolate 11,659 Vegan Most chocolates are not vegan. Check the ingredients for dairy or milk. Sometimes Vegan
Lactose 10,799 Vegan Milk sugar. A type of sugar only found in animal milk. Never Vegan
Egg 8,095 Vegan This product contains egg in one form or another. Not vegan friendly. Never Vegan
Butter 7,501 Vegan Ingredient contains butter. Most likely derived from dairy but may be plant based. Never Vegan
Disodium 7,348 Vegan Flavor Enhancer - Often made from animals. Sometimes Vegan
Honey 7,130 Vegan Sweetener - A substance secreted by bees and some related insects. Never Vegan
Lactic 6,923 Vegan Typically derived from plants such as beets. When animal-derived, found in blood and muscle tissue. Sometimes Vegan
Fish 5,927 Vegan Fish are not considered a vegan food. Never Vegan
Palmitate 5,628 Vegan A fatty acid most commonly derived from palm oil but may be derived from animals as well. Sometimes Vegan
Ammonium 5,070 Vegan Another type of salt derived from Lactic Acid, which can be obtained from whey or milk. Sometimes Vegan
Beef 4,672 Vegan Not vegan if originating from cow flesh. Never Vegan
Chicken 4,652 Vegan Not a vegan food if a byproduct of an animal. Never Vegan
Pork 4,330 Vegan Pork, or pig, is not considered a vegan option. Never Vegan
Ferrous 4,296 Vegan Coloring - May be derived from animal source. Sometimes Vegan
Lactate 4,216 Vegan A type of salt derived from Lactic Acid, which can be obtained from whey or milk. Sometimes Vegan
Gelatin 4,169 Vegan Protein obtained by boiling animal skin, connective tissue or bones, usually from cows or pigs. Never Vegan
E471 4,168 Vegan Mono and di-glycerides of fatty acids (sometimes derived from animal fats). Sometimes Vegan
Buttermilk 3,717 Vegan Ingredient contains buttermilk. Most likely derived from dairy but may be plant based. Never Vegan
Magnesium 3,327 Vegan Another type of salt derived from Lactic Acid, which can be obtained from whey or milk. Sometimes Vegan
Polysorbate 3,302 Vegan Derivatives of fatty acids, which are commonly sourced from animals. In cosmetics, foods. Sometimes Vegan
Glycerol 2,737 Vegan Sweetener - Mostly from animal fats, unless otherwise stated. Sometimes Vegan
Meat 2,537 Vegan Not vegan if originating from any animal. Never Vegan
Yogurt 1,973 Vegan Most yogurts are produced by bacterial fermentation of milk. Check if the milk used is plant based. Sometimes Vegan
Humectant 1,931 Vegan Sweetener - Mostly from animal fats, unless otherwise stated. Sometimes Vegan
Sugar 1,890 Vegan A sweet material that consists of sucrose. Some sugars are processed through boneblack. Sometimes Vegan
Stearoyl 1,865 Vegan When animal-derived, a fat from cows, pigs, and sheep, etc. May also be of plant origin. Sometimes Vegan
Propylene 1,600 Vegan Emulsifier - May contain animal fats. Sometimes Vegan
E120 1,550 Vegan Coloring - Cochineal (another name for carminic acid, a pigment made from powdered insects) Never Vegan
Confectioner 1,499 Vegan Glazing Agent - Most likely a resin secreted by the lac bug. Never Vegan
Turkey 1,494 Vegan Turkey is not considered a vegan food. Never Vegan
Molluscs 1,461 Vegan Mollusca is the second largest phylum of invertebrate animals. Not a vegan option. Never Vegan
Glycerin 1,450 Vegan Often derived from animal fat but may also be plant based. Sometimes Vegan
Pasta 1,403 Vegan Some pasta noodles are made with eggs. Check the label or ask if vegan. Sometimes Vegan
E322 1,366 Vegan Emulsifier - From soy or eggs. Check for vegan labeling or contact the supplier. Sometimes Vegan
Yolk 1,365 Vegan This product may contain egg yolk. Check the ingredients to be sure. Never Vegan
Rennet 1,289 Vegan Extract usually obtained from a newly-born calf stomach. This can also be derived from synthetic sources or from bacteria and fungus. Sometimes Vegan
Acetic 1,221 Vegan Emulsifier - May contain animal fat as it is derived from Glycerin/Glycerol. Sometimes Vegan
Bacon 1,137 Vegan Bacon is a type of salt-cured pork/pig. Not considered a vegan option. Never Vegan
Shrimp 1,105 Vegan Shrimp is not considered a vegan food. Never Vegan
Stearate 1,051 Vegan Salt of stearic acid. An emulsifier and/or stabilizer. Sometimes Vegan
Lecithin 983 Vegan May contain egg yolks. Can also be directly obtained from animal fat or soy. Sometimes Vegan
Sucrose 976 Vegan Sugar - Some sugars are processed through boneblack. Sometimes Vegan
Tartaric 949 Vegan May contain animal fat as it is derived from Glycerin/Glycerol. Sometimes Vegan
Shortening 877 Vegan Most shortening is animal based and is made from butter, suet, and/or lard. Never Vegan
Dairy 828 Vegan Dairy products are a type of food produced from or containing milk of mammals. Never Vegan
Worcestershire 718 Vegan Many varieties of Worcestershire sauce contain anchovies. Check the ingredients to be sure. Never Vegan
Shellac 677 Vegan Glazing Agent - From a resin secreted by an insect called the lac beetle. Never Vegan
Cysteine 675 Vegan An amino acid found in the hair protein keratin. Sometimes Vegan
Sorbitan 602 Vegan From stearic acid. Stearic acid is found in both vegetable and animal fats. Sometimes Vegan
Tuna 600 Vegan Tuna is obtained from the tuna fish. Not a vegan food option. Never Vegan
Niacin 598 Vegan Used as a cholesterol treatment. In rare cases it can be derived from animal sources. Sometimes Vegan
Salmon 575 Vegan Salmon is a kind of fish. Not considered a vegan food. Never Vegan
Lard 559 Vegan Fat from the abdomen of a pig that is rendered and clarified for use in cooking. Never Vegan
E422 550 Vegan Sweetener - Likely plant-based but may be derived from animal fat. Sometimes Vegan
Polyglycerol 538 Vegan A byproduct of soap manufacture (normally uses animal fat). Sometimes Vegan
Taurine 533 Vegan Found in the bile of mammals. Can be, but not likely, plant based. Sometimes Vegan
Lysozyme 528 Vegan Enzyme - From eggs. Never Vegan
E631 513 Vegan Disodium Inosinate: Can be produced from meat, fish or tapioca starch. Sometimes Vegan
Carbon 506 Vegan Likely derived from animals unless otherwise noted. Sometimes Vegan
Sheep 482 Vegan Sheep are not considered a vegan option. Never Vegan
Beeswax 455 Vegan Wax usually obtained from melting honeycomb with boiling water, straining it, and cooling it. Never Vegan
Carmine 442 Vegan Red pigment extracted from the crushed carcasses of the cochineal insect, a cactus-feeding insect. Never Vegan
Animal 409 Vegan This product contains an animal derivative. May not be vegan friendly. Never Vegan
Anchovy 401 Vegan Not vegan if sourced from an animal. Never Vegan
Fur 362 Vegan The skin of an animal. Used in clothing. Never Vegan
Marine 320 Vegan Likely from fish or marine mammals (including porpoises). Never Vegan
Casein 315 Vegan The main protein present in milk and cheese. Never Vegan
Diglyceride 311 Vegan Emulsifier - May contain animal fats. Sometimes Vegan
Crab 306 Vegan Not a vegan option if sourced from a crab. Never Vegan
Biotin 295 Vegan A whitish powder. It can be derived from animal cells, milk plants, or produced synthetically. Sometimes Vegan
Collagen 279 Vegan Protein found in most tissues, including bone, cartilage and skin. Typically from cows or chickens. Never Vegan
Caramel 274 Vegan Used as a coloring. Some caramel is derived from cane sugar and not necessarily vegan. Sometimes Vegan
Pollock 273 Vegan Pollock is a fish. Not a vegan option. Never Vegan
Xanthan 263 Vegan Gum produced from corn sugar. Sometimes purified using chicken lysozyme or fermentation of whey. Sometimes Vegan
Wax 233 Vegan Typically produced from shellac (lac bug secretion) or beeswax. Never Vegan
Glyceryl 229 Vegan Emulsifier - May contain animal fats. Sometimes Vegan
E904 202 Vegan Glazing Agent - Shellac is the secretion of the lac bug. Sometimes Vegan
Choline 201 Vegan Frequently obtained from eggs, nerve tissue, blood, and milk. Never Vegan
Skin 188 Vegan Animal based unless labeled as faux or artificial. Never Vegan
Cod 157 Vegan Not a vegan option if from the cod fish. Never Vegan
Pesto 144 Vegan Many varieties contain Parmesan cheese. Sometimes Vegan
Albumen 140 Vegan In eggs, milk, muscles, blood, and many vegetable tissues and fluids. Sometimes Vegan
Yoghurt 132 Vegan Likely produced by bacterial fermentation of milk. Check if the milk used is plant based. Sometimes Vegan
Lipase 129 Vegan Enzyme from the stomachs, tongue glands of calves, and lambs. Can be from plants, fungus or yeast. Sometimes Vegan
E901 128 Vegan Glazing Agent - Made from beeswax. Never Vegan
Diacetyl 121 Vegan Emulsifier - May contain animal fat as it is derived from Glycerin/Glycerol. Sometimes Vegan
Resinous 119 Vegan Glazing Agent - Glaze that comes from the hardened resinous material secreted by the lac insect. Never Vegan
Lobster 111 Vegan Lobster is not considered a vegan food. Never Vegan
Glycine 110 Vegan Flavor Enhancer - Can sometimes be prepared from gelatine, but can be made synthetically. Sometimes Vegan
Tallow 106 Vegan Solid fat of sheep and cattle separated from the membranous tissues. Typically found in margarine. Never Vegan
Retinol 98 Vegan Vitamin A obtained from vegetables, egg yolks, or fish liver oil. Sometimes Vegan
Monoglyceride 95 Vegan Often from animal fat but may be plant based. Check the label. Sometimes Vegan
Squid 85 Vegan Squid is a sea animal and is not considered to be a vegan food. Never Vegan
Amino 84 Vegan The building blocks of protein in all animals and plants. Sometimes Vegan
Trehalose 83 Vegan A sugar synthesized by some animals, fungi, bacteria, and plants. Sometimes Vegan
Alanine 81 Vegan The building blocks of protein in all animals and plants. Never Vegan
Lamb 81 Vegan Not vegan if sourced from a lamb/young sheep. Never Vegan
Cochineal 80 Vegan Red pigment extracted from the crushed carcasses of the cochineal insect, a cactus-feeding insect. Never Vegan
Crisp 80 Vegan May contain dairy ingredients such as casein, whey or animal-derived enzymes. Sometimes Vegan
Propolis 78 Vegan Bee glue. Used by bees to stop up crevices and fix combs to the hive. Never Vegan
Fatty 77 Vegan Fatty Acids: Organic compounds - Saturated, polyunsaturated and unsaturated. Sometimes Vegan
E920 76 Vegan Improving Agent - Produced commercially from animal and human hair (and feathers). Sometimes Vegan
Sucralose 75 Vegan Known as Splenda. Produced from cane sugar and tested on animals. May be filtered through bone char. Never Vegan
Duck 73 Vegan Not a vegan option if sourced from a duck. Never Vegan
Acetylated 69 Vegan Can come from fish oil, egg yolks, butter, lemongrass, wheat germ oil, carotene in carrots, etc. Never Vegan
Royal 66 Vegan A honey bee secretion that is used in the nutrition of larvae, as well as adult queens. Sometimes Vegan
Monocalcium 64 Vegan A salt found in rocks and bones. Used as an anti-caking agent. Sometimes Vegan
Organ 62 Vegan Not vegan unless sourced from plants. Sometimes Vegan
Xantham 61 Vegan A derivative of bacterial fermentation. Chicken lysozyme may be used in the manufacturing process. Sometimes Vegan
Blood 61 Vegan From any slaughtered animal. Possibly in foods such as lecithin. Never Vegan
Methionine 59 Vegan Essential amino acid found in various proteins (usually from egg albumen and casein). Never Vegan
Pollen 57 Vegan The primary food source for a bee hive. Produced for bees by bees. Sometimes Vegan
Glaze 55 Vegan A pure food glaze and natural glaze. Made with shellac from the lac bug. Also known as beetle juice. Sometimes Vegan
Bee 53 Vegan This product contains an ingredient derived from bees. May not be vegan friendly. Never Vegan