Beano’s active ingredient is alpha-galactosidase, a digestive enzyme that breaks down certain complex carbohydrates before they can ferment in your gut and produce gas. The enzyme is derived from a food-grade mold called Aspergillus niger, and it’s combined with a handful of inactive fillers and binders that hold the tablet together.
The Active Ingredient: Alpha-Galactosidase
Alpha-galactosidase is the only ingredient in Beano that actually does anything for digestion. It targets a specific family of complex sugars called galacto-oligosaccharides, which are found in beans, lentils, root vegetables, broccoli, cabbage, and some dairy products. The three main sugars in this family are raffinose, stachyose, and verbascose. All three share the same basic structure: a chain of sugar molecules linked together by bonds that human digestive enzymes can’t break on their own.
Because your body can’t absorb these sugars in the small intestine, they pass intact into the large intestine. Bacteria there feast on them and produce gas as a byproduct. That’s why a bowl of chili or a plate of hummus can leave you bloated. Alpha-galactosidase steps in earlier in the process, snipping those bonds in the small intestine so the sugars get absorbed before bacteria ever see them. The enzyme converts the complex chains into simpler sugars (galactose and sucrose) that your body handles easily.
Inactive Ingredients
According to the Dietary Supplement Label Database, the remaining ingredients in Beano tablets are: cellulose gel, mannitol, invertase, potato starch, magnesium stearate, colloidal silica, and gelatin. None of these play a role in gas relief. Cellulose gel and potato starch act as fillers that give the tablet its shape. Magnesium stearate keeps the powder from sticking to manufacturing equipment. Colloidal silica prevents clumping. Mannitol is a sugar alcohol used as a sweetener. Gelatin serves as a binding agent.
Invertase is worth a brief mention because it is technically an enzyme. It breaks down sucrose (table sugar) into its two component simple sugars. In Beano, it likely plays a supporting role by further processing the sucrose that alpha-galactosidase releases. The presence of gelatin means standard Beano tablets are not vegetarian or vegan.
Where the Enzyme Comes From
The alpha-galactosidase in Beano is produced by Aspergillus niger, a common mold widely used in food manufacturing. It’s the same organism used to produce citric acid for soft drinks and various enzymes for the food industry. It’s classified as food-grade and generally recognized as safe. That said, because it originates from a mold, people with known mold sensitivities may want to be cautious. Rare allergic reactions have been reported, though they are uncommon.
What Beano Does Not Contain
Beano does not contain lactase, the enzyme that breaks down lactose in dairy products. If your gas comes from milk, cheese, or ice cream rather than beans and vegetables, Beano won’t help. Lactose intolerance requires a different enzyme supplement entirely. Beano also has no effect on gas caused by carbonated drinks, swallowed air, or fat digestion problems.
It’s also not an antacid. It contains nothing that neutralizes stomach acid or treats heartburn. Its job is narrow and specific: breaking down galacto-oligosaccharides so they don’t ferment in your colon.
How to Take It for Best Results
Timing matters with Beano because the enzyme needs to be present in your stomach alongside the food it’s supposed to work on. You take it right before your first bite of a gas-producing meal. If the food has already moved past the small intestine, the enzyme can’t do its job. The standard dose is two to three tablets per meal, though higher-fiber meals may call for more.
One practical detail: alpha-galactosidase is a protein, and like all proteins, it breaks down when exposed to high heat. Adding Beano drops to a pot of boiling soup or a casserole in the oven will destroy the enzyme before it reaches your digestive system. It needs to be taken as a tablet or added to food that has already cooled to eating temperature.
Who Should Think Twice
Because alpha-galactosidase converts complex sugars into simpler ones, it increases the amount of absorbable sugar from a given meal. For most people this is negligible, but if you have diabetes and carefully manage your blood sugar, it’s worth knowing that the carbohydrates Beano breaks down become available for absorption rather than passing through undigested. The effect is small in absolute terms since galacto-oligosaccharides make up only a fraction of a meal’s total carbohydrate content, but it’s a real biochemical shift worth factoring in.
People with galactosemia, a rare genetic condition that prevents the body from processing galactose, should avoid Beano entirely. The enzyme produces free galactose as one of its end products, which is exactly what someone with galactosemia cannot safely metabolize.