Drug & supplement interaction

Galacto-oligosaccharides (gos) + Cyclopentolate

Cyclopentolate brand name: Cyclogyl.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 13, 2026

The bottom line No known interaction

We found no known interaction between Galacto-oligosaccharides (gos) and Cyclopentolate in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Galacto-oligosaccharides (gos) and Cyclopentolate

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Cyclopentolate and Galacto-oligosaccharides (gos) in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Galacto-oligosaccharides (gos) safety at a glance

Galacto-oligosacch... overall Generally safe GOS is generally recognized as safe and well tolerated for most people in food amounts.

Pregnancy Likely Safe When consumed in amounts commonly found in foods. Read the full pregnancy detail

Breastfeeding Likely Safe When consumed in amounts commonly found in foods. Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Cyclopentolate and Galacto-oligosaccharides (gos)? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

How we checked

Why No Interaction Is Listed for Cyclopentolate

Interactions in our licensed database are recorded against drug classes, not just single drug names. Cyclopentolate is filed under a single classification — oral drugs. Galacto-oligosaccharides (gos) has documented interactions with 1 drug class — the most serious being immunosuppressants (moderate) — and none of Cyclopentolate’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Galacto-oligosaccharides (gos) Does Interact With Other Medications

Galacto-oligosaccharides (gos) has 121 moderate known drug interactions in our database — Cyclopentolate isn’t one of them. If you take anything else, check it against the full list below.

Moderate 121 No known interaction 2,709 (incl. Cyclopentolate)

Taking anything else?

Check Another of Your Medications Against Galacto-oligosaccharides (gos)

Covers the 2,830 medications we’ve checked against Galacto-oligosaccharides (gos). Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Galacto-oligosaccharides (gos) and Cyclopentolate May Share a Side Effect

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

A skin rash Additional detail
Galacto-oligosaccharides (gos)
“Orally, giving a formula supplemented with 4 grams/L of GOS and polydextrose (1:1 ratio) to infants has been associated with an increased incidence of atopic dermatitis in one clinical study. However, most other clinical research in infants at risk of atopy shows that GOS-containing formula may actually reduce the risk of developing atopic dermatitis.”

Galacto-oligosaccharides (gos) · Natural Medicines adverse-effect record, reported in atopic disease.
4 sources cited

26709. Ziegler E, Vanderhoof JA, Petschow B, et al. Term infants fed formula supplemented with selected blends of prebiotics grow normally and have soft stools similar to those reported for breast-fed infants. J Pediatr Gastroenterol Nutr 2007;44(3):359-364. PubMed

26707. Kukkonen K, Savilahti E, Haahtela T, et al. Probiotics and prebiotic galacto-oligosaccharides in the prevention of allergic diseases: a randomized, double-blind, placebo-controlled trial. J Allergy Clin Immunol 2007;119(1):192-198. PubMed

26708. Moro G, Arslanoglu S, Stahl B, et al. A mixture of prebiotic oligosaccharides reduces the incidence of atopic dermatitis during the first six months of age. Arch Dis Child 2006;91(10):814-819. PubMed

99223. Arslanoglu S, Moro GE, Schmitt J, Tandoi L, Rizzardi S, Boehm G. Early dietary intervention with a mixture of prebiotic oligosaccharides reduces the incidence of allergic manifestations and infections during the first two years of life. J Nutr. 2008;138(6 PubMed
Cyclopentolate

Listed in the ADVERSE REACTIONS section of the FDA label for Cyclopentolate. Read the label on DailyMed ›

Reported for Galacto-oligosaccharides (gos) but not commonly for Cyclopentolate: constipation, a severe allergic reaction, bloating or gas and diarrhea.

Effects for Cyclopentolate come from the ADVERSE REACTIONS section of its FDA label; effects for Galacto-oligosaccharides (gos) come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Galacto-oligosaccharides (gos) in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Safe

When consumed in amounts commonly found in foods.

Pregnancy And Lactation Possibly Safe

When used orally. GOS have been safely used in clinical research in doses of about 4.5 grams daily from week 25 of pregnancy until delivery.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

Everything else you take

See Every Supplement That Interacts With Cyclopentolate

This page covers Galacto-oligosaccharides (gos) only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Cyclopentolate page lists 17 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Coffee Charcoal (moderate), European Mandrake (moderate), Glucomannan (moderate) and Guar Gum (moderate).

By severity: 1 major · 7 moderate · 9 minor.

From our pharmacist’s overview on the Cyclopentolate page

“Cyclopentolate (Cyclogyl) is the dilating drop used for eye exams, and even though it goes in the eye rather than your mouth, its interaction list still calls for real vigilance, starting with the single major-rated entry. That entry is activated charcoal, which can bind drugs and lower their levels in the body even when the drug was n…”

Reviewed by 2 · Jul 18, 2026

Open the Cyclopentolate interaction page

How much people look this up

Where Galacto-oligosaccharides (gos) and Cyclopentolate Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Galacto-oligosaccharides (gos)

Steady interest

#1,450 of 1,452 supplements looked up here in the last 7 days

29 days ago today

Medication Cyclopentolate

Top 25%

#308 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?

Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Galacto-oligosaccharides (gos) reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 13, 2026. The Galacto-oligosaccharides (gos) and Cyclopentolate records this page draws on were last updated July 10, 2026.
What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.

Data structure & sourcing designed and verified by Dr. Brian Staiger, PharmD, BCPS.

Supplement

About Galacto-oligosaccharides (gos)

What is Galacto-oligosaccharides (gos)?

Prebiotic to support gut bacteria
Constipation
Digestive health
Immune support
Infant gut health

Galacto-oligosaccharides (GOS) are a type of prebiotic fiber that feed the helpful bacteria in your gut. They are generally well tolerated and may help with digestive regularity and gut balance, though they can cause gas and bloating, especially at higher doses. Evidence is promising but still limited for many uses, so talk with your pharmacist or doctor before starting.

Carbohydrate derived from lactose (milk sugar) · Powder, capsules, chewable tablets, added to foods, infant formula, and functional drinks

An interaction check asks whether these two react with each other — it does not ask whether Galacto-oligosaccharides (gos) is a good idea for someone in your situation. Here is what our Galacto-oligosaccharides (gos) record says about it on its own.

Galacto-oligosaccharides (gos): dosing

There is no single official or standardized dose for GOS. Studies have used a range of amounts, and the right dose can vary from person to person.A common, practical approach is to start with a small amount and slowly increase it over days or weeks.

From our Galacto-oligosaccharides (gos) monograph — the full record covers uses, side effects and every documented interaction.

Read the full Galacto-oligosaccharides (gos) monograph & all interactions

Medication

About Cyclopentolate Ophthalmic

What Is Cyclopentolate Ophthalmic Used For?

Brand name: Cyclogyl

Cyclopentolate hydrochloride ophthalmic solution is used to produce mydriasis (pupil dilation) and cycloplegia (temporary paralysis of the eye's focusing muscle). These effects allow eye care providers to examine the inside of the eye more thoroughly.

See full Cyclopentolate Ophthalmic drug information

Keep checking

Other Drugs & Galacto-oligosaccharides (gos)

Browse every other medication we’ve checked against Galacto-oligosaccharides (gos) — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major

121Moderate

0Minor

2,708No known interaction

121 Moderate 2,708 No interaction

Moderate

121 interactions

Showing 60 of 121 moderate interactions — see all 121 on the Galacto-oligosaccharides (gos) page.

No interaction 2,708 drugs checked — show the list

We also checked Galacto-oligosaccharides (gos) against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,708 medications checked with no known interaction — see the full Galacto-oligosaccharides (gos) list.

See the full Galacto-oligosaccharides (gos) interactions page

See every supplement checked against Cyclopentolate, ranked by severity

Evidence & sources

Galacto-oligosaccharides (gos) References

The 12 references that drive our Galacto-oligosaccharides (gos) monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

Teuri U, Korpela R. Galacto-oligosaccharides relieve constipation in elderly people. Ann Nutr Metab 1998;42(6):319-327. PubMed
Kukkonen K, Savilahti E, Haahtela T, et al. Probiotics and prebiotic galacto-oligosaccharides in the prevention of allergic diseases: a randomized, double-blind, placebo-controlled trial. J Allergy Clin Immunol 2007;119(1):192-198. PubMed
Moro G, Arslanoglu S, Stahl B, et al. A mixture of prebiotic oligosaccharides reduces the incidence of atopic dermatitis during the first six months of age. Arch Dis Child 2006;91(10):814-819. PubMed
Ziegler E, Vanderhoof JA, Petschow B, et al. Term infants fed formula supplemented with selected blends of prebiotics grow normally and have soft stools similar to those reported for breast-fed infants. J Pediatr Gastroenterol Nutr 2007;44(3):359-364. PubMed
Bakker-Zierikzee AM, Tol EA, Kroes H, et al. Faecal sIgA secretion in infants fed on pre- or probiotic infant formula. Pediatr Allergy Immunol 2006;17(2):134-140. PubMed
Shadid R, Haarman M, Knol J, et al. Effects of galactooligosaccharide and long-chain fructooligosaccharide supplementation during pregnancy on maternal and neonatal microbiota and immunity--a randomized, double-blind, placebo-controlled study. Am J Clin N PubMed
Vos AP, Haarman M, Buco A, et al. A specific prebiotic oligosaccharide mixture stimulates delayed-type hypersensitivity in a murine influenza vaccination model. Int Immunopharmacol 2006;6(8):1277-1286. PubMed
Ito M, Deguchi Y, Matsumoto K, et al. Influence of galactooligosaccharides on the human fecal microflora. J Nutr Sci Vitaminol (Tokyo) 1993;39(6):635-640. PubMed
Morel FB, Dai Q, Ni J, Thomas D, Parnet P, Fança-Berthon P. a-Galacto-oligosaccharides dose-dependently reduce appetite and decrease inflammation in overweight adults. J Nutr. 2015;145(9):2052-9. PubMed
Bisceglia M, Indrio F, Riezzo G, Poerio V, Corapi U, Raimondi F. The effect of prebiotics in the management of neonatal hyperbilirubinaemia. Acta Paediatr. 2009;98(10):1579-81. PubMed
Arslanoglu S, Moro GE, Schmitt J, Tandoi L, Rizzardi S, Boehm G. Early dietary intervention with a mixture of prebiotic oligosaccharides reduces the incidence of allergic manifestations and infections during the first two years of life. J Nutr. 2008;138(6 PubMed
Colombo J, Carlson SE, Algarín C, et al. Developmental effects on sleep-wake patterns in infants receiving a cow's milk-based infant formula with an added prebiotic blend: a randomized controlled trial. Pediatr Res 2021;89(5):1222-31. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Galacto-oligosaccharides (gos) and Cyclopentolate Together: Common Questions

Is it safe to take Galacto-oligosaccharides (gos) with Cyclopentolate?

We do not list a known interaction between Galacto-oligosaccharides (gos) and Cyclopentolate. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.

Do Galacto-oligosaccharides (gos) and Cyclopentolate have any of the same side effects?

Yes — our sources link each of them separately to one of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.

How was the Galacto-oligosaccharides (gos) and Cyclopentolate combination checked?

Interactions in our licensed database are recorded against drug classes. Cyclopentolate is filed under 1 classification, and Galacto-oligosaccharides (gos) has documented interactions with 1 drug class — none of Cyclopentolate's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.

Does Galacto-oligosaccharides (gos) interact with any other medications?

Yes. Galacto-oligosaccharides (gos) has 121 documented drug interactions in our database — Cyclopentolate is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.

Does Cyclopentolate interact with any supplements?

Yes. Cyclopentolate has documented interactions with 17 supplements in our database — Galacto-oligosaccharides (gos) is not one of them. The Cyclopentolate interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Galacto-oligosaccharides (gos) monograph Uses, safety profile, and every drug interaction in one place Cyclopentolate Ophthalmic drug information The full plain-English guide to this medication Cyclopentolate supplement interactions Every supplement checked against Cyclopentolate, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 12 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Cyclopentolate and Galacto-oligosaccharides (gos)?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.