Most Common Incompatible Ingredients for Vegan Diets

The most common incompatible ingredients found in products.

Ingredient Total Foods Diet Description Compatibility
Milk 79,725 Vegan Not vegan if derived from an animal. Check the ingredients. Never Vegan
Natural 54,670 Vegan Ingredients are not synthetic or artificial, but extracted directly from plants or animal products Sometimes Vegan
Citric 35,973 Vegan Emulsifier - May contain animal fat as it is derived from Glycerin/Glycerol. Sometimes Vegan
Dextrose 29,458 Vegan Sometimes derived from animal tissues and fluids. Check the label to determine if plant based. Sometimes Vegan
Calcium 22,812 Vegan May be derived from the shells of marine organisms, snails, and eggs. Check the label to be sure. Sometimes Vegan
Glucose 22,713 Vegan Sometimes derived from animal tissues and fluids. Check the label to determine if plant based. Sometimes Vegan
Riboflavin 22,082 Vegan May contain milk. Sometimes Vegan
Vitamin 16,359 Vegan Likely animal based but may be plant based. Check the label to verify the source of the ingredient. Sometimes Vegan
Eggs 16,050 Vegan This product contains egg in one form or another. Not vegan friendly. Never Vegan
Whey 15,354 Vegan The watery part of milk that remains after the formation of curds. Never Vegan
Cheese 13,379 Vegan Most likely dairy based. Some forms are plant based and should be clearly labeled if true. Never Vegan
Chocolate 11,856 Vegan Most chocolates are not vegan. Check the ingredients for dairy or milk. Sometimes Vegan
Lactose 10,907 Vegan Milk sugar. A type of sugar only found in animal milk. Never Vegan
Egg 8,241 Vegan This product contains egg in one form or another. Not vegan friendly. Never Vegan
Butter 7,769 Vegan Ingredient contains butter. Most likely derived from dairy but may be plant based. Never Vegan
Disodium 7,468 Vegan Flavor Enhancer - Often made from animals. Sometimes Vegan
Honey 7,203 Vegan Sweetener - A substance secreted by bees and some related insects. Never Vegan
Lactic 7,068 Vegan Typically derived from plants such as beets. When animal-derived, found in blood and muscle tissue. Sometimes Vegan
Fish 5,943 Vegan Fish are not considered a vegan food. Never Vegan
Palmitate 5,709 Vegan A fatty acid most commonly derived from palm oil but may be derived from animals as well. Sometimes Vegan
Ammonium 5,107 Vegan Another type of salt derived from Lactic Acid, which can be obtained from whey or milk. Sometimes Vegan
Chicken 4,726 Vegan Not a vegan food if a byproduct of an animal. Never Vegan
Beef 4,703 Vegan Not vegan if originating from cow flesh. Never Vegan
Pork 4,372 Vegan Pork, or pig, is not considered a vegan option. Never Vegan
Ferrous 4,350 Vegan Coloring - May be derived from animal source. Sometimes Vegan
Lactate 4,258 Vegan A type of salt derived from Lactic Acid, which can be obtained from whey or milk. Sometimes Vegan
Gelatin 4,224 Vegan Protein obtained by boiling animal skin, connective tissue or bones, usually from cows or pigs. Never Vegan
E471 4,193 Vegan Mono and di-glycerides of fatty acids (sometimes derived from animal fats). Sometimes Vegan
Buttermilk 3,802 Vegan Ingredient contains buttermilk. Most likely derived from dairy but may be plant based. Never Vegan
Sugar 3,644 Vegan A sweet material that consists of sucrose. Some sugars are processed through boneblack. Sometimes Vegan
Magnesium 3,356 Vegan Another type of salt derived from Lactic Acid, which can be obtained from whey or milk. Sometimes Vegan
Polysorbate 3,349 Vegan Derivatives of fatty acids, which are commonly sourced from animals. In cosmetics, foods. Sometimes Vegan
Glycerol 2,769 Vegan Sweetener - Mostly from animal fats, unless otherwise stated. Sometimes Vegan
Meat 2,567 Vegan Not vegan if originating from any animal. Never Vegan
Yogurt 1,977 Vegan Most yogurts are produced by bacterial fermentation of milk. Check if the milk used is plant based. Sometimes Vegan
Humectant 1,960 Vegan Sweetener - Mostly from animal fats, unless otherwise stated. Sometimes Vegan
Stearoyl 1,896 Vegan When animal-derived, a fat from cows, pigs, and sheep, etc. May also be of plant origin. Sometimes Vegan
Propylene 1,640 Vegan Emulsifier - May contain animal fats. Sometimes Vegan
E120 1,554 Vegan Coloring - Cochineal (another name for carminic acid, a pigment made from powdered insects) Never Vegan
Turkey 1,500 Vegan Turkey is not considered a vegan food. Never Vegan
Confectioner 1,500 Vegan Glazing Agent - Most likely a resin secreted by the lac bug. Never Vegan
Glycerin 1,493 Vegan Often derived from animal fat but may also be plant based. Sometimes Vegan
Molluscs 1,465 Vegan Mollusca is the second largest phylum of invertebrate animals. Not a vegan option. Never Vegan
Pasta 1,440 Vegan Some pasta noodles are made with eggs. Check the label or ask if vegan. Sometimes Vegan
Yolk 1,392 Vegan This product may contain egg yolk. Check the ingredients to be sure. Never Vegan
E322 1,372 Vegan Emulsifier - From soy or eggs. Check for vegan labeling or contact the supplier. Sometimes Vegan
Rennet 1,306 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
Lecithin 1,300 Vegan May contain egg yolks. Can also be directly obtained from animal fat or soy. Sometimes Vegan
Acetic 1,240 Vegan Emulsifier - May contain animal fat as it is derived from Glycerin/Glycerol. Sometimes Vegan
Bacon 1,151 Vegan Bacon is a type of salt-cured pork/pig. Not considered a vegan option. Never Vegan
Shrimp 1,116 Vegan Shrimp is not considered a vegan food. Never Vegan
Stearate 1,075 Vegan Salt of stearic acid. An emulsifier and/or stabilizer. Sometimes Vegan
Niacin 1,033 Vegan Used as a cholesterol treatment. In rare cases it can be derived from animal sources. Sometimes Vegan
Sucrose 995 Vegan Sugar - Some sugars are processed through boneblack. Sometimes Vegan
Tartaric 968 Vegan May contain animal fat as it is derived from Glycerin/Glycerol. Sometimes Vegan
Shortening 916 Vegan Most shortening is animal based and is made from butter, suet, and/or lard. Never Vegan
Dairy 846 Vegan Dairy products are a type of food produced from or containing milk of mammals. Never Vegan
Worcestershire 724 Vegan Many varieties of Worcestershire sauce contain anchovies. Check the ingredients to be sure. Never Vegan
Shellac 681 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 634 Vegan From stearic acid. Stearic acid is found in both vegetable and animal fats. Sometimes Vegan
Tuna 603 Vegan Tuna is obtained from the tuna fish. Not a vegan food option. Never Vegan
Caramel 591 Vegan Used as a coloring. Some caramel is derived from cane sugar and not necessarily vegan. Sometimes Vegan
Salmon 578 Vegan Salmon is a kind of fish. Not considered a vegan food. Never Vegan
Lard 562 Vegan Fat from the abdomen of a pig that is rendered and clarified for use in cooking. Never Vegan
E422 552 Vegan Sweetener - Likely plant-based but may be derived from animal fat. Sometimes Vegan
Xanthan 549 Vegan Gum produced from corn sugar. Sometimes purified using chicken lysozyme or fermentation of whey. Sometimes Vegan
Polyglycerol 546 Vegan A byproduct of soap manufacture (normally uses animal fat). Sometimes Vegan
Taurine 542 Vegan Found in the bile of mammals. Can be, but not likely, plant based. Sometimes Vegan
Lysozyme 532 Vegan Enzyme - From eggs. Never Vegan
E631 515 Vegan Disodium Inosinate: Can be produced from meat, fish or tapioca starch. Sometimes Vegan
Carbon 510 Vegan Likely derived from animals unless otherwise noted. Sometimes Vegan
Sheep 483 Vegan Sheep are not considered a vegan option. Never Vegan
Beeswax 473 Vegan Wax usually obtained from melting honeycomb with boiling water, straining it, and cooling it. Never Vegan
Carmine 459 Vegan Red pigment extracted from the crushed carcasses of the cochineal insect, a cactus-feeding insect. Never Vegan
Animal 411 Vegan This product contains an animal derivative. May not be vegan friendly. Never Vegan
Anchovy 407 Vegan Not vegan if sourced from an animal. Never Vegan
Fur 363 Vegan The skin of an animal. Used in clothing. Never Vegan
Marine 321 Vegan Likely from fish or marine mammals (including porpoises). Never Vegan
Diglyceride 318 Vegan Emulsifier - May contain animal fats. Sometimes Vegan
Casein 316 Vegan The main protein present in milk and cheese. Never Vegan
Biotin 313 Vegan A whitish powder. It can be derived from animal cells, milk plants, or produced synthetically. Sometimes Vegan
Crab 308 Vegan Not a vegan option if sourced from a crab. Never Vegan
Wax 296 Vegan Typically produced from shellac (lac bug secretion) or beeswax. Never Vegan
Collagen 294 Vegan Protein found in most tissues, including bone, cartilage and skin. Typically from cows or chickens. Never Vegan
Pollock 282 Vegan Pollock is a fish. Not a vegan option. Never Vegan
Glyceryl 233 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 191 Vegan Animal based unless labeled as faux or artificial. Never Vegan
Monocalcium 165 Vegan A salt found in rocks and bones. Used as an anti-caking agent. Sometimes Vegan
Cod 159 Vegan Not a vegan option if from the cod fish. Never Vegan
Sucralose 147 Vegan Known as Splenda. Produced from cane sugar and tested on animals. May be filtered through bone char. Never Vegan
Pesto 147 Vegan Many varieties contain Parmesan cheese. Sometimes Vegan
Lipase 142 Vegan Enzyme from the stomachs, tongue glands of calves, and lambs. Can be from plants, fungus or yeast. Sometimes Vegan
Albumen 142 Vegan In eggs, milk, muscles, blood, and many vegetable tissues and fluids. Sometimes Vegan
Yoghurt 136 Vegan Likely produced by bacterial fermentation of milk. Check if the milk used is plant based. Sometimes Vegan
E901 128 Vegan Glazing Agent - Made from beeswax. Never Vegan
Resinous 125 Vegan Glazing Agent - Glaze that comes from the hardened resinous material secreted by the lac insect. Never Vegan
Glaze 125 Vegan A pure food glaze and natural glaze. Made with shellac from the lac bug. Also known as beetle juice. Sometimes Vegan
Fatty 123 Vegan Fatty Acids: Organic compounds - Saturated, polyunsaturated and unsaturated. Sometimes Vegan
Diacetyl 122 Vegan Emulsifier - May contain animal fat as it is derived from Glycerin/Glycerol. Sometimes Vegan
Lobster 112 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
Enzyme 98 Vegan Protein produced by living cells. Can be derived from animals, plants, bacteria, fungi and yeast. Sometimes Vegan
Monoglyceride 96 Vegan Often from animal fat but may be plant based. Check the label. Sometimes Vegan
Cochineal 89 Vegan Red pigment extracted from the crushed carcasses of the cochineal insect, a cactus-feeding insect. Never Vegan
Amino 89 Vegan The building blocks of protein in all animals and plants. Sometimes Vegan
Squid 86 Vegan Squid is a sea animal and is not considered to be a vegan food. Never Vegan
Crisp 85 Vegan May contain dairy ingredients such as casein, whey or animal-derived enzymes. Sometimes Vegan
Trehalose 85 Vegan A sugar synthesized by some animals, fungi, bacteria, and plants. Sometimes Vegan
Lamb 81 Vegan Not vegan if sourced from a lamb/young sheep. Never Vegan
Alanine 81 Vegan The building blocks of protein in all animals and plants. Never Vegan
Propolis 78 Vegan Bee glue. Used by bees to stop up crevices and fix combs to the hive. Never Vegan
E920 76 Vegan Improving Agent - Produced commercially from animal and human hair (and feathers). Sometimes Vegan
Duck 73 Vegan Not a vegan option if sourced from a duck. Never Vegan
Acetate 71 Vegan Possible sources are fish liver oil, egg yolks, butter, lemongrass, carrots or synthetics. Sometimes Vegan
Oleic 70 Vegan Fatty acid occurring in animal and vegetable fats. Sometimes Vegan
Acetylated 70 Vegan Can come from fish oil, egg yolks, butter, lemongrass, wheat germ oil, carotene in carrots, etc. Never Vegan
Tricalcium 69 Vegan A mineral salt found in rocks and bones. The tribasic form of calcium phosphate. Sometimes Vegan
Royal 66 Vegan A honey bee secretion that is used in the nutrition of larvae, as well as adult queens. Sometimes Vegan
Xantham 62 Vegan A derivative of bacterial fermentation. Chicken lysozyme may be used in the manufacturing process. Sometimes Vegan
Organ 62 Vegan Not vegan unless sourced from plants. Sometimes Vegan
Methionine 59 Vegan Essential amino acid found in various proteins (usually from egg albumen and casein). Never Vegan
Blood 59 Vegan From any slaughtered animal. Possibly in foods such as lecithin. Never Vegan
Pollen 57 Vegan The primary food source for a bee hive. Produced for bees by bees. Sometimes Vegan
Bovine 57 Vegan Another word for cows or cattle. Not a vegan friendly food source. Never Vegan
Monostearate 53 Vegan Manufactured by reacting stearic acid with sorbitol to yield a mixture of esters. Sometimes Vegan
Bee 53 Vegan This product contains an ingredient derived from bees. May not be vegan friendly. Never Vegan