Drug & supplement interaction

Inulin + Simvastatin, Sitagliptin

Simvastatin, Sitagliptin brand name: Juvisync.

Minor Interaction
Medically reviewed by · Updated September 2026
The bottom line Minor

Inulin has a minor interaction with Simvastatin, Sitagliptin. Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.

Read the full interaction report
SeverityMinor
LikelihoodUnlikely
EvidenceD
What do Severity, Likelihood & Evidence mean?
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Interaction report

Inulin and Simvastatin, Sitagliptin

Here is the interaction we found between these two, with the evidence behind it.

Minor

ANTIDIABETES DRUGS

Why this applies to Simvastatin, Sitagliptin

Simvastatin, Sitagliptin falls under ANTIDIABETES DRUGS — the group Inulin interacts with.

Theoretically, inulin might increase the risk of hypoglycemia with antidiabetes drugs.
Some clinical research shows that inulin improves glycemic control in patients with diabetes; however, it is unclear if it has hypoglycemic effects.
Severity Minor Likelihood Unlikely Evidence D

Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans..

Dr. Brian Staiger, PharmD, BCPS
Dr. Brian Staiger explains PharmD, Clinical Pharmacist

Juvisync combines two medicines: sitagliptin, which helps lower your blood sugar, and simvastatin, which lowers cholesterol. The interaction we have on file really points at the sitagliptin (the blood sugar) side of this combo. The thinking is that inulin, by feeding your gut bacteria and possibly nudging blood sugar a little lower on its own, could theoretically add to sitagliptin's effect and tip you toward low blood sugar (shakiness, sweating, dizziness, or confusion).

I want to be honest though: this is a theoretical concern based on how these things work, not something we see happen often. The link is rated minor and unlikely. Inulin doesn't change how simvastatin is broken down. If you take Juvisych and want to add inulin, just keep an eye on your sugar readings and mention it to your pharmacist or doctor.

Contact Dr. Brian directly if you have additional questions on this interaction
References
  1. Dehghan P, Gargari BP, Jafar-Abadi MA, Aliasgharzadeh A. Inulin controls inflammation and metabolic endotoxemia in women with type 2 diabetes mellitus: a randomized-controlled clinical trial. Int J Food Sci Nutr 2014;65(1):117-23. PubMed
  2. Cai X, Yu H, Liu L, et al. Milk powder co-supplemented with inulin and resistant dextrin improves glycemic control and insulin resistance in elderly type 2 diabetes mellitus: a 12-week randomized, double-blind, placebo-controlled trial. Mol Nutr Food Res PubMed
  3. Rao M, Gao C, Xu L, et al. Effect of inulin-type carbohydrates on insulin resistance in patients with type 2 diabetes and obesity: a systematic review and meta-analysis. J Diabetes Res. 2019;2019:5101423. PubMed

What These Ratings Mean

Every interaction above is graded three ways — here’s the key to each label.

Severity how clinically significant the interaction is
Major

Clinically significant. Avoid the combination, or use only under close professional supervision.

Moderate

Usually worth avoiding or managing — may need monitoring, a dose change, or timing apart.

Minor

Generally not serious. Be aware of it and mention it to your pharmacist.

Likelihood how strong the evidence is that the interaction actually happens in people
  • LikelyWell-controlled human studies have demonstrated the likely existence of this interaction.
  • ProbableInteraction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • PossibleInteraction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists.
  • UnlikelyInteraction has been demonstrated in animal or in lab research but has been shown not to occur in humans.
Evidence the quality of the studies behind the rating (graded A–D)
  • AHigh-quality meta-analysis (quantitative systematic review).
  • BCase-control study.
  • CConsensus.
  • DAnecdotal evidence.

These ratings are for information only. Never start, stop, or otherwise change your therapy before speaking with your provider.

Keep it in perspective

Inulin Also Interacts With Other Medications

Inulin has 85 minor known drug interactions in our database — the Simvastatin, Sitagliptin one above is one of them. If you take anything else, check it against the full list below.

Minor 85 No known interaction 2,745 (incl. Simvastatin, Sitagliptin)
Taking anything else?

Check Another of Your Medications Against Inulin

Covers the 2,830 medications we’ve checked against Inulin. Pick one to open its full report.

Everything else you take

See Every Supplement That Interacts With Simvastatin, Sitagliptin

This page covers Inulin only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Simvastatin, Sitagliptin page lists 362 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Apple (major), Beer (major), Grapefruit (major) and Siberian Cocklebur (major).

By severity: 8 major · 304 moderate · 50 minor.

From our pharmacist’s overview on the Simvastatin, Sitagliptin page

“Juvisync pairs simvastatin for cholesterol with sitagliptin for type 2 diabetes, and that combination carries 362 supplement interactions on file, eight rated major, so read this page with real care rather than a quick skim. Grapefruit stands out as the everyday hazard; it blocks the enzyme that clears simvastatin, raising statin level…”

Reviewed by 2 · Jul 18, 2026

Open the Simvastatin, Sitagliptin interaction page

One more smart check

Taking Inulin as Part of a Dietary Supplement Product? Check It for Interactions

We hold 1,362 real supplement products containing Inulin, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Inulin. Your product may carry other ingredients that interact with Simvastatin, Sitagliptin too, on top of Inulin — and those would not show on this page. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Inulin and Simvastatin, Sitagliptin 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 Inulin
Top 25%

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

29 days ago today
Medication Simvastatin, Sitagliptin
Steady interest

#1,474 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.

Supplement

About Inulin

What is Inulin?

  • Constipation and regularity
  • Prebiotic gut health
  • Blood sugar support
  • Calcium absorption
  • Weight management
  • Cholesterol support

Inulin is a type of plant fiber (a prebiotic) found naturally in foods like chicory root, onions, and garlic, and it is widely added to supplements and processed foods. It may help with regularity and feeding healthy gut bacteria, but it commonly causes gas and bloating, especially at higher doses. Start low, increase slowly, and check with your pharmacist or doctor if you have gut conditions.

Read the full Inulin monograph & all interactions
Keep checking

Other Drugs & Inulin

Browse every other medication we’ve checked against Inulin — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
85Minor
2,744No known interaction
85 Minor 2,744 No interaction
Minor

85 interactions

Showing 60 of 85 minor interactions — see all 85 on the Inulin page.

No interaction 2,744 drugs checked — show the list

We also checked Inulin against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,744 medications checked with no known interaction — see the full Inulin list.

See the full Inulin interactions page
See every supplement checked against Simvastatin, Sitagliptin, ranked by severity
Sources

Sources & How We Checked

Interaction details are evidence-graded and sourced from the Natural Medicines database. The medication overview comes from MedlinePlus.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

Keep exploring
Inulin monograph › Uses, safety, and every drug interaction in one place Simvastatin, Sitagliptin supplement interactions › Every supplement checked against Simvastatin, Sitagliptin, 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 Ask a pharmacist › Free, personal answer from our licensed team
Pharmacist Counseling Corner

Taking Inulin and Simvastatin, Sitagliptin Together: Common Questions

Can you take Inulin with Simvastatin, Sitagliptin?
There is only a minor interaction, which is usually not serious. Read the full details on this page and confirm with your pharmacist before combining them.
How serious is the Inulin and Simvastatin, Sitagliptin interaction?
We rate it Minor. This interaction is generally not clinically significant, but it remains worth noting and discussing with your pharmacist.

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

Still Have a Question About Simvastatin, Sitagliptin and Inulin?

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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.