Glucomannan from Konjac Root Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Glucomannan from Konjac Root against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.
Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy
Glucomannan from Konjac Root is a dietary supplement by Wonder Laboratories with 2 active ingredients. Its ingredients are commonly taken for weight loss and appetite control, constipation, high cholesterol.Based on those ingredients, 2,056 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Glucomannan, Chromium. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Glucomannan from Konjac Root by Wonder Laboratories
Ask about any prescription or over-the-counter medication and we check it for interactions with Glucomannan from Konjac Root by Wonder Laboratories — and tell you which ingredient is responsible.
AI summaries are generated from our interaction database for education only — always confirm with your pharmacist. How we use AI
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HelloPharmacist Scorecard of Glucomannan from Konjac Root by Wonder Laboratories
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This product contains two active ingredients. Glucomannan is a soluble fiber extracted from konjac root that acts as a bulking agent in your digestive tract.
Chromium is a mineral that plays a role in blood sugar regulation. The capsules also contain inactive ingredients: gelatin, vegetable cellulose, and vegetable magnesium stearate.
Does it work?
Moderate evidence
Glucomannan is possibly effective for constipation, type 2 diabetes, and high cholesterol (hyperlipidemia). The evidence for its use in high blood pressure isn't established well enough to rate.
Chromium is likely effective for chromium deficiency and possibly effective for diabetes, but the evidence suggests it's likely ineffective for prediabetes, schizophrenia, and high blood pressure.
How safe is it?
Well-documented data
Glucomannan is generally well tolerated when you take it with plenty of water, but it can cause choking or blockage if swallowed dry or without adequate liquid—especially important since this comes in capsule form. Common side effects include abdominal pain, bloating, constipation, diarrhea, gas, nausea, and vomiting, particularly at doses over 3 grams daily.
Chromium is generally well tolerated at typical doses, though high or long-term doses carry unknown risks; gastrointestinal irritation, headaches, insomnia, irritability, and mood changes are the most common side effects, and rare cases of kidney or liver damage have been reported. For pregnancy, there isn't enough reliable safety data for glucomannan, so talk with your doctor before using it.
Chromium in small amounts from food or prenatal vitamins is generally considered acceptable, but extra supplement doses should be avoided unless your doctor recommends it. During breastfeeding, little is known about glucomannan's safety, so caution is advised; chromium lactation data suggests it's likely safe, but limited data exists for higher supplement doses.
Meds to double-check
Moderate interaction found
Before taking this product, check with your doctor or pharmacist if you take oral medications in general (glucomannan may slow their absorption), diabetes or insulin medications (chromium may lower your blood sugar too much), levothyroxine or other thyroid hormones (chromium may reduce how much gets into your bloodstream), or NSAIDs and aspirin (they may increase chromium levels in your body).
The bottom line
Scorecard at a glanceFully disclosed formula with some supporting evidence for its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.
This product may help with constipation, blood sugar control, or cholesterol if the science supports those uses for you—but the interactions with oral medications and diabetes drugs are real and need checking first. If you take any prescription medications, especially diabetes medications, thyroid hormone, or NSAIDs, talk with your doctor or pharmacist before starting, and make sure you take this with plenty of water to avoid blockage.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Feb 23, 2022.
This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed
General information
Key facts about Glucomannan from Konjac Root, straight from the product label.
| Brand | Wonder Laboratories |
|---|---|
| Net contents | 240 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Feb 23, 2022 |
| DSLD ID | 263126 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | Nutrient, All Other, Structure/Function |
| Intended target group(s) | Adult (18 - 50 Years) |
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.
Supplement Facts
The label details for Glucomannan from Konjac Root by Wonder Laboratories, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Glucomannan | 1800 mg | -- |
| Chromium | 120 mcg | 100% |
Other ingredients: Gelatin, Vegetable Cellulose, Vegetable Magnesium Stearate
Tap any ingredient to jump to its full detail below.
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula
Fiber in the diet is essential for good health. Fiber acts as a bulking agent in the body, which may promote a feeling of fullness. Glucomannan is a dietary fiber source from the root of the konjac plant. It is an excellent addition to a sensible weight loss program. It has been safely consumed for over 1000 years in the Orient.
Now with Chromium
Precautions
Tamper evident: Do not use this product if imprinted foil seal under cap is broken or missing.
Keep out of reach of children.
Caution: If you are pregnant or nursing, consult your physician before taking this product.
Storage
Keep tightly closed. Store at room temperature: 59 degrees-86 degrees F (15 degrees-30 degrees C).
Formulation
Mfg. in an FDA Registered Facility using Good Manufacturing Practices (GMPs). Conforms to USP <2091> for weight. Meets USP <2040> disintegration for maximum bioavailability.
Helps maintain blood sugar levels already within the normal range May promote a feeling of fullness
Made in USA
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
General Statements
Reorder #6722
FDA Statement of Identity
Dietary supplement
Brand IP Statement(s)
ChromeMate brand of niacin-bound chromium polynicotinate.
Suggested/Recommended/Usage/Directions
Directions: Take 4 capsules with a full glass of water approximately 30 minutes before meal time.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Glucomannan from Konjac Root by Wonder Laboratories label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.
View the full label (PDF)The Ingredients in Glucomannan from Konjac Root by Wonder Laboratories
These are the 2 active ingredients this product is made of. Select any to open its full monograph.
Serving size4 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.
Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.
Glucomannan
Interacts with2,022 drugs
Glucomannan is a soluble fiber from the konjac root that swells into a gel in your stomach, which may help with mild weight loss, constipation, and mo...
Glucomannan monograph & interactionsChromium
Interacts with178 drugs
Chromium is an essential trace mineral involved in how the body handles sugar and fat. Some studies suggest it may modestly help blood sugar control i...
Chromium monograph & interactionsOther (inactive) ingredients: Gelatin, Vegetable Cellulose, Vegetable Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.
Glucomannan from Konjac Root by Wonder Laboratories Drug Interactions
HelloPharmacist Interaction Report
Glucomannan from Konjac Root by Wonder Laboratories interacts with medications through its glucomannan and chromium content.
The most serious concern is a Moderate interaction: glucomannan may decrease how your body absorbs oral medications in general, including diabetes drugs like glyburide, by slowing their passage through your digestive tract. A small clinical study showed this effect actually happens.
Read the full breakdown — every affected drug type, severity by severity
Chromium adds several Moderate-severity interactions to watch for. It may increase the blood-sugar-lowering effect of diabetes medications and insulin, raising your risk of low blood sugar (hypoglycemia).
Chromium may also reduce how much levothyroxine (thyroid hormone) your body absorbs, potentially weakening its effect. Additionally, chromium has two Minor interactions: nonsteroidal anti-inflammatory drugs (NSAIDs) and aspirin may increase how much chromium your body absorbs and retains.
Altogether, these interactions span 2,057 individual medications. Because glucomannan can interfere with absorption of many oral drugs taken at the same time, check your exact medications with the search tool on this page before starting this supplement.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Glucomannan from Konjac Root?
Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.
Go to the checkerIngredients driving the most interactions
Individual Drug Interactions
The ingredients in Glucomannan from Konjac Root interact with 2,056 drugs. Click any drug to see the details.
2 of the 2 ingredients in Glucomannan from Konjac Root interact with drugs. Each result below shows which ingredient is responsible. Glucomannan Chromium
"phentolamineOraVerse, Rogitine, Ryzumvi
How "phentolamine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + "phentolamine interaction6-mercaptopurinePurinethol
How 6-mercaptopurine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + 6-mercaptopurine interactionAbacavirZiagen
How Abacavir interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Abacavir interactionAbacavir Sulfate, Dolutegravir, LamivudineTriumeq
How Abacavir Sulfate, Dolutegravir, Lamivudine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Abacavir Sulfate, Dolutegravir, Lamivudine interactionAbacavir, LamivudineEpzicom
How Abacavir, Lamivudine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Abacavir, Lamivudine interactionAbciximabReoPro
How Abciximab interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Abciximab interactionAbemaciclibVerzenio
How Abemaciclib interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Abemaciclib interactionAbiraterone
How Abiraterone interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Abiraterone interactionAbiraterone AcetateYonsa, Zytiga
How Abiraterone Acetate interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Abiraterone Acetate interactionAbrocitinibCibinqo
How Abrocitinib interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Abrocitinib interactionAcalabrutinibCalquence
How Acalabrutinib interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acalabrutinib interactionAcamprosateCampral
How Acamprosate interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acamprosate interactionAcarboseGlucobay, Prandase, Precose
How Acarbose interacts with Glucomannan from Konjac Root — through 2 ingredients. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acarbose interactionChromiumAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, chromium may have additive effects with antidiabetic agents and increase the risk of hypoglycemia.
Read the full Chromium + Acarbose interactionAcebutololRhotral, Sectral
How Acebutolol interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acebutolol interactionAcenocoumarolSintrom
How Acenocoumarol interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acenocoumarol interactionAcepromazineAtravet
How Acepromazine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acepromazine interactionAcetaminophenChildren's Tylenol, Children's Tylenol Meltaways, Tylenol, Tylenol Ex Strength
How Acetaminophen interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen interactionAcetaminophen, AspirinGemnisyn
How Acetaminophen, Aspirin interacts with Glucomannan from Konjac Root — through 2 ingredients. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Aspirin interactionChromiumNonsteroidal Anti-inflammatory Drugs (nsaids), Aspirin Minor
Interaction Summary
NSAIDs might increase chromium levels in the body.
Read the full Chromium + Acetaminophen, Aspirin interactionAcetaminophen, Aspirin, CaffeineExcedrin, Excedrin Extra Strength, Excedrin Migraine
How Acetaminophen, Aspirin, Caffeine interacts with Glucomannan from Konjac Root — through 2 ingredients. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Aspirin, Caffeine interactionChromiumAspirin, Nonsteroidal Anti-inflammatory Drugs (nsaids) Minor
Interaction Summary
Theoretically, aspirin might increase chromium absorption.
Read the full Chromium + Acetaminophen, Aspirin, Caffeine interactionAcetaminophen, Brompheniramine, PhenylpropanolamineDimetapp Cold and Flu
How Acetaminophen, Brompheniramine, Phenylpropanolamine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Brompheniramine, Phenylpropanolamine interactionAcetaminophen, ButalbitalAxocet, Bancap, Bucet, Butex Forte, Esgic CF, Orbivan CF +5 more
How Acetaminophen, Butalbital interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Butalbital interactionAcetaminophen, Butalbital, CaffeineEsgic, Esgic Plus, Fiogesic, Fioricet, Repan, Tecnal +1 more
How Acetaminophen, Butalbital, Caffeine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Butalbital, Caffeine interactionAcetaminophen, Butalbital, Caffeine, CodeineEsgic with Codeine, Fioricet w/ Codeine
How Acetaminophen, Butalbital, Caffeine, Codeine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Butalbital, Caffeine, Codeine interactionAcetaminophen, Butalbital, CodeineBancap w/ Codeine
How Acetaminophen, Butalbital, Codeine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Butalbital, Codeine interactionAcetaminophen, Butalbital, Codeine PhosphatePhrenilin #3
How Acetaminophen, Butalbital, Codeine Phosphate interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Butalbital, Codeine Phosphate interactionAcetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, PhenylephrineHycomine Compound
How Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Caffeine, Chlorpheniramine, Hydrocodone, Phenylephrine interactionAcetaminophen, Caffeine, CodeineGesic C15, Gesic C30, Gesic C8, Lenoltec 1, Lenoltec 2, Lenoltec 3 +1 more
How Acetaminophen, Caffeine, Codeine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Caffeine, Codeine interactionAcetaminophen, Caffeine, Codeine, SalicylamideCodalan No.1, Codalan No.2, Codalan No.3
How Acetaminophen, Caffeine, Codeine, Salicylamide interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Caffeine, Codeine, Salicylamide interactionAcetaminophen, Caffeine, DihydrocodeineDHC Plus, Panlor DC, Panlor SS
How Acetaminophen, Caffeine, Dihydrocodeine interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Caffeine, Dihydrocodeine interactionAcetaminophen, Caffeine, IsomethepteneMigralam
How Acetaminophen, Caffeine, Isometheptene interacts with Glucomannan from Konjac Root — through 1 ingredient. Tap an ingredient for the detail:
GlucomannanOral Drugs Moderate
Interaction Summary
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Read the full Glucomannan + Acetaminophen, Caffeine, Isometheptene interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Glucomannan from Konjac Root with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.
Glucomannan
Oral Drugs
Theoretically, glucomannan may decrease absorption of drugs taken orally.
Due to its viscosity and bulking effects, there is concern that glucomannan can decrease the absorption of oral drugs. A small clinical study in healthy volunteers shows that taking glyburide 2.5 mg plus glucomannan 3.9 grams with breakfast reduces plasma levels of glyburide when compared with breakfast and glyburide alone. In addition, animal research demonstrates this effect on amoxicillin, but shows increased absorption of metronidazole. This mouse model also demonstrates that metronidazole elimination is prolonged, but amoxicillin elimination is enhanced by 38%; glucomannan may also affect the distribution of some drugs. To avoid changes in absorption, take glucomannan 30-60 minutes after taking oral drugs.
Chromium
Antidiabetes Drugs
Theoretically, chromium may have additive effects with antidiabetic agents and increase the risk of hypoglycemia.
Some research shows that taking chromium might lower blood glucose levels, especially in patients with poorly controlled type 2 diabetes.
Insulin
Theoretically, concomitant use of chromium and insulin might increase the risk of hypoglycemia.
In clinical research, chromium has been shown to increase insulin sensitivity,
Levothyroxine (Synthroid, Others)
Chromium might bind levothyroxine in the intestinal tract and decrease levothyroxine absorption.
Clinical research in healthy volunteers shows that taking chromium picolinate 1000 mcg with levothyroxine 1 mg decreases serum levels of levothyroxine by 17% when compared to taking levothyroxine alone. Advise patients to take levothyroxine at least 30 minutes before or 3-4 hours after taking chromium.
Aspirin
Theoretically, aspirin might increase chromium absorption.
Animal research suggests that aspirin may increase chromium absorption and chromium levels in the blood.
Nonsteroidal Anti-Inflammatory Drugs (Nsaids)
NSAIDs might increase chromium levels in the body.
Drugs that are prostaglandin inhibitors, such as NSAIDs, seem to increase chromium absorption and retention.
Brand information
Manufacturer and brand details for Glucomannan from Konjac Root, from the product label.
Wonder Laboratories
See all Wonder Laboratories products- Name
- Wonder Laboratories
- Street Address
- 115 S.C.T. Ct.
- City
- White House
- State
- TN
- ZipCode
- 37188
Glucomannan from Konjac Root by Wonder Laboratories: Common Questions
Does Glucomannan from Konjac Root by Wonder Laboratories interact with any medications?
How can one product interact with so many drugs?
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What are the most common side effects?
Will this help my diabetes?
Can it cause choking or blockage?
Will my levothyroxine still work if I take this?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Glucomannan from Konjac Root is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind Glucomannan from Konjac Root’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Glucomannan
Interacts with 2,022 drugsGlucomannan is a soluble fiber from the konjac root that swells into a gel in your stomach, which may help with mild weight loss, constipation, and modestly lowering cholesterol. It is gener...
Read the full Glucomannan monograph → Herb & supplement monographChromium
Interacts with 178 drugsChromium is an essential trace mineral involved in how the body handles sugar and fat. Some studies suggest it may modestly help blood sugar control in certain people with type 2 diabetes, b...
Read the full Chromium monograph →Sources & How We Checked
Glucomannan from Konjac Root's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.
The 68 references behind this product’s interaction data
Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.
Glucomannan 15 references
- Henry DA, Mitchell AS, Aylward J, et al. Glucomannan and risk of oesophageal obstruction. Br Med J 1986;292:591-2. PubMed
- Shima K, Tanaka A, Ikegami H, et al. Effect of dietary fiber, glucomannan, on absorption of sulfonylurea in man. Horm Metab Res 1983;15:1-3. PubMed
- Villaverde, A. F., Benlloch, S., Berenguer, M., Miguel, Rayon J., Pina, R., and Berenguer, J. Acute hepatitis of cholestatic type possibly associated with the use of glucomannan (amorphophalus konjac). J Hepatol. 2004;41(6):1061-1062. PubMed
- Yoshida, M., Vanstone, C. A., Parsons, W. D., Zawistowski, J., and Jones, P. J. Effect of plant sterols and glucomannan on lipids in individuals with and without type II diabetes. Eur.J Clin Nutr. 2006;60(4):529-537. PubMed
- Wood, R. J., Fernandez, M. L., Sharman, M. J., Silvestre, R., Greene, C. M., Zern, T. L., Shrestha, S., Judelson, D. A., Gomez, A. L., Kraemer, W. J., and Volek, J. S. Effects of a carbohydrate-restricted diet with and without supplemental soluble fiber
- Vanderbeek, P. B., Fasano, C., O'Malley, G., and Hornstein, J. Esophageal obstruction from a hygroscopic pharmacobezoar containing glucomannan. Clin Toxicol.(Phila) 2007;45(1):80-82. PubMed
- Bernstein, J. A., Crandall, M. S., and Floyd, R. Respiratory sensitization of a food manufacturing worker to konjac glucomannan. J Asthma 2007;44(8):675-680. PubMed
- Shichijo, K., Kobayashi, Y., Fueki, R., Shimoyama, K., and Masaya, M. [2 cases of konjac bronchial asthma found outside the "konnyaku" producing district]. Arerugi 1969;18(2):97-100.
- Carabin IG, Lyon MR, Wood S, et al. Supplementation of the diet with the functional fiber PolyGlycoplex is well tolerated by healthy subjects in a clinical trial. Nutr J 2009;8:9. PubMed
- Lyon MR, Reichert RG. The effect of a novel viscous polysaccharide along with lifestyle changes on short-term weight loss and associated risk factors in overweight and obese adults: an observational retrospective clinical program analysis. Altern Med Rev
- Lyon M, Wood S, Pelletier X, et al. Effects of a 3-month supplementation with a novel soluble highly viscous polysaccharide on anthropometry and blood lipids in nondieting overweight or obese adults. J Hum Nutr Diet 2011;24(4):351-9. PubMed
- Han Y, Zhang L, Liu XQ, Zhao ZJ, Lv LX. Effect of glucomannan on functional constipation in children: a systematic review and meta-analysis of randomised controlled trials. Asia Pac J Clin Nutr 2017;26(3):471-7.
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