How gummies work

Sugar Alcohols In Gummy Supplements: A Guide

Reviewed by Dr. Dyan Hes, MD

Maltitol and xylitol are how a gummy reaches zero calories, and they are the most likely cause of any digestive upset from one. What they are, how much is in a single gummy, and the dog problem.

What sugar alcohols are

Sugar alcohols are carbohydrates that taste sweet but are absorbed slowly and incompletely from the small intestine. Maltitol, xylitol, sorbitol, erythritol and isomalt are the ones you will meet. They are neither sugars nor alcohols in the everyday sense of either word, which is an unhelpful name for a useful class of ingredient.

Because they are poorly absorbed they contribute fewer calories than sugar, and because they are bulky they can replace sugar in a confection without the texture collapsing. That combination is why they dominate sugar-free sweets, mints, protein bars and, increasingly, supplement gummies.

Why gummy supplements use them

A supplement gummy has a harder job than a sweet. It has to taste good enough to be taken voluntarily every day, hold an active ingredient that is often bitter, survive a year on a shelf, and ideally not carry a sugar figure that undermines the whole proposition.

Sugar alcohols solve three of those four at once. They sweeten, they bulk, and they let a panel print a very low calorie figure. On this particular panel that produces zero calories and one gram of total carbohydrate per serving, which is a genuinely good result for a chewable.

The fourth problem, bitterness, is usually handled by adding a high-intensity sweetener on top. That is why the other-ingredients line on many gummy panels, including this one, lists four sweetening agents rather than one.

Why some people react and others do not

What is not absorbed in the small intestine continues into the colon, where two things happen: it draws water in osmotically, and gut bacteria ferment it. The first produces loose stools, the second produces gas and bloating. How much of either you get depends on the amount, on which sugar alcohol it is, and on your own gut.

That variability is why two people can eat the same sugar-free mints and have completely different afternoons. It is also why nobody can tell you in advance which group you are in, and why anyone who already avoids sugar-free products for this reason should start with the smallest bundle of any gummy supplement.

This is a general ordering from the wider literature on sugar alcohols, not a statement about any particular product. Individual tolerance varies widely.

How much is in a single gummy

This is where a sense of proportion matters. The digestive effects of sugar alcohols are dose-dependent, and the doses that cause trouble are the ones found in a bag of sweets rather than in a single supplement gummy.

A panel that prints one gram of total carbohydrate per serving is telling you the whole carbohydrate contribution is one gram. Whatever share of that is maltitol and xylitol, it is a fraction of a gram. For comparison, the amounts that reliably produce symptoms in the literature on sugar alcohols are measured in tens of grams.

The exact split is not published on this panel and this desk will not estimate it. What can be said is the ceiling, and the ceiling here is low.

The xylitol and dogs problem

This is the most important paragraph on the page and it has nothing to do with whether the supplement works.

Xylitol is dangerous to dogs at small amounts. In dogs it triggers a rapid insulin release that humans do not experience, and the consequences can be severe and fast. A bottle of sweet red gummies left on a kitchen counter in a house with a dog is a genuine hazard, not a footnote.

Keep the cap on, keep the bottle in a closed cupboard, and if a dog does get into one, contact a vet immediately and use the word xylitol. Do not wait for symptoms. The same applies to sugar-free gum, mints and peanut butter, all of which are more common sources than supplements are.

Sugar alcohols and teeth

One genuine advantage, and it is the reason xylitol appears in dental products. Oral bacteria cannot ferment sugar alcohols the way they ferment sugar, so a sugar alcohol sweetened chew does not feed the process that produces acid on enamel.

That does not make a daily gummy good for teeth. It makes it considerably better than a daily sugar-sweetened one, which is a lower bar than it sounds and is still worth having. A glass of water afterwards costs nothing and removes any residue from the surfaces of the teeth.

Reading a gummy base list

Four things to look for on any gummy supplement panel, in the other-ingredients line rather than in the actives.

All four are on the panel of the product this website sells, which is how this article can be specific rather than general.

One more habit, and it is the one that separates a careful reader from a hopeful one: read the base list before the actives. The actives are what you are being sold. The base is what you will actually be eating every morning for the next three months, it is where every allergen and tolerance question lives, and on this particular bottle it is where a marketing claim comes apart. A panel that prints eleven base ingredients in full has told you the truth about itself, including the parts that do not flatter it.

Practical advice if you react

• Take it with food first. A gummy on an empty stomach is the harshest version of the same amount.
• Stop for three days, then try once more. If the same thing happens both times, it is the product rather than a coincidence.
• Do not push through it. Nothing in this category is worth a fortnight of discomfort.
• Use the guarantee. A sixty-day window covering opened bottles exists for exactly this, and calling +1 (522) 127-2222 costs nothing.

NCCIH's guidance on using supplements wisely and the NIH consumer factsheet are both worth reading before starting anything on this shelf. The National Institute on Aging covers the same ground for anyone over sixty, where the interaction question matters more.

The verdict

Sugar alcohols are the reason a supplement gummy can exist at all in a form people are willing to take daily without a sugar figure attached. At one gummy a day the amounts are small and most people will notice nothing whatsoever.

If you are in the minority who react to them, you will know quickly and the guarantee covers it. If you have a dog, the bottle belongs in a cupboard rather than on a counter, and that is true of every gummy supplement in the house rather than this one in particular.