Maltitol
Maltodextrin
Maltol
Manganese Sulfate
Manioc
Masa
Masa Flour
Masa Harina
Menhaden Oil
Methyl Cellulose
Micro-particulated
Egg White Protein
Milk
Milk Protein Isolate
Milo (Sorghum)
Mineral Oil
Mineral Salts Modified Food Starch (scary word, I know, but according to the FDA in the US MFS means Modified CORN starch)
Molybdenum Amino Acid Chelate
Monocalcium Phosphate
Monopotassium Phosphate
Monosodium Glutamate (MSG)
Monostearates
Mung Bean
Musk
Mustard Flour
Myristic Acid
Natural Smoke Flavor
Niacin-Niacinamide
Neotame
Niacin
Niacinamide
Nitrates
Nitrous Oxide
Oats (if certified GF)
Oils and Fats
Oleic Acid
Oleoresin
Olestra
Oleyl Alcohol/Oil
Orange B
Oryzanol
Palmitic Acid
Pantothenic Acid
Papain
Paprika
Paraffin
Partially Hydrogenated Cottonseed Oil
Partially Hydrogenated Soybean Oil
Peas
Pea Flour
Pea Starch
Peanuts
Peanut Flour
Pectin
Pectinase
Peppermint Oil
Peppers
Pepsin
Peru Balsam
Petrolatum
Phosphoric
Acid
Phosphoric Glycol
Pigeon Peas
Polenta
Polydextrose
Polyethylene Glycol
Polyglycerol
Polysorbates
Polysorbate 60
Polysorbate 80
Potassium Benzoate
Potassium Caseinate
Potassium Citrate
Potassium Iodide
Potassium Lactate
Potassium Matabisulphite
Potassium Sorbate
Potatoes
Potato Flour
Potato Starch
Povidone
Prinus
Pristane
Propolis
Propylene Glycol
Propylene Glycol Monosterate
Propyl Gallate
Protease
Psyllium
Pyridoxine Hydrochloride
Quinoa
Recaldent
Reduced Iron
Rennet
Rennet Casein
Resinous Glaze
Riboflavin
Rice
Rice (Enriched)
Rice Flour
Rice Starch
Rice Syrup
Rice Vinegar
Ricinoleic Acid
Romano Bean (chickpea)
Rosematta
Rosin
Royal Jelly
Saccharin
Saffron
Sago
Sago Palm
Sago Flour
Sago Starch
Saifun (bean threads)
Seaweed
Shea
Sherry Vinegar
Silicon Dioxide
Soba (be sure its 100% buckwheat)
Sodium Acid Pyrophosphate
Sodium Acetate
Sodium Alginate
Sodium Ascorbate
Sodium Benzoate
Sodium Caseinate
Sodium Citrate
Sodium Erythrobate
Sodium Hexametaphosphate
Sodium Lactate
Sodium Lauryl Sulfate
Sodium Metabisulphite
Sodium Nitrate
Sodium Phosphate
Sodium Polyphosphate
Sodium Silaco Aluminate
Sodium Stearoyl Lactylate
Sodium Sulphite
Sodium Stannate
Sodium Tripolyphosphate
Sorbic Acid
Sorbitan Monostearate
Sorbitol-Mannitol (can cause IBS symptoms)
Sorghum Flour
Soy
Soybean
Soy Lecithin
Soy Protein
Soy Protein Isolate
Stearates
Stearamide
Stearamine
Stearic Acid
Stearyl Lactate
Stevia
Subflower Seed
Succotash (corn and beans)
Sucralose
Sucrose
Sulfosuccinate
Sulfites
Sulfur Dioxide
Sweet Chestnut Flour
Tagatose
Tallow
Tapioca
Tara Gum
Taro
Tarrow Root
Tartaric Acid
Tartrazine
Tea-Tree Oil
Teff Flour
Tepary Bean
Textured Vegetable Protein
Thiamin Hydrochloride
Thiamine Mononitrate
Thiamine Hydrochloride
Titanium Dioxide
Tofu
Tolu Balsam
Torula Yeast
Tragacanth
Tragacanth Gum
Triacetin
Tricalcium Phosphate
Tri-Calcium Phosphate
Trypsin
Turmeric
Tyrosine
Urad/Urid flour
Urd
Vinegar (All except Malt)
Vanilla Extract
Vanilla Flavoring
Vanillin
Waxy Maize
Whey
Whey Protein Concentrate
Whey Protein Isolate
White Vinegar
Wild Rice
Xanthan Gum
Xylitol
Yam Flour
Yeast
Zinc Oxide
Zinc Sulfate
Alcohol:
(Gluten Free) Beer
-Redbridge
-Omission (these guys actually remove the gluten from regular beer!)
Bourbon (like Maker's Mark)
Brandy
Champagne
Cider (I'm a big fan of Angry Orchard, but Strongbow and Woodchuck are most common in restaurants)
Cognac
Gin
Grappa
Kahlua
Mead
Ouzo
Rum
Scotch Whiskey
Sherry
Tequila
Vermouth
Vodka (try to stay with potato)
Wine
Whiskey (though it is always safer to choose naturally gluten free libations, many scientists feel the distillation process helps remove any gluten)