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Dietary supplement

Dr. Cutler's Ultimate Blood Sugar Formula Ingredients & Drug Interactions

by True Health

Dr. Cutler's Ultimate Blood Sugar Formula label
See full label image
Capsule Category: Botanical With Nutrients
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 30, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Dr. Cutler's Ultimate Blood Sugar Formula 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

The interaction bottom line Most serious interaction: Moderate

Dr. Cutler's Ultimate Blood Sugar Formula is a dietary supplement by True Health with 5 active ingredients. Its ingredients are commonly taken for hair growth and thinning hair, brittle nails, skin health.Based on those ingredients, 1,177 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Gymnema sylvestre leaf extract, Cinnamon bark extract, Banaba (Lagerstroemia speciosa) leaf extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Dr. Cutler's Ultimate Blood Sugar Formula by True Health

Ask about any prescription or over-the-counter medication and we check it for interactions with Dr. Cutler's Ultimate Blood Sugar Formula by True Health — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Dr. Cutler's Ultimate Blood Sugar Formula by True Health

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.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 23, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 5 of its 5 active ingredients.
  • No proprietary blends here — you can verify the dose of every single component.

This formula contains five active ingredients. Biotin is a B vitamin that supports hair and skin health; it's likely effective for biotin deficiency but has insufficient evidence for several other conditions.

Cinnamon bark extract, chromium, gymnema sylvestre leaf extract, and banaba leaf extract are included for their traditional or researched roles in supporting healthy blood sugar levels — though the evidence for these uses is incomplete or rated insufficient. The capsules also contain gelatin, magnesium stearate, and silicon dioxide as inactive ingredients to bind and fill the capsule.

Does it work?

Strong evidence
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Strong

Clinical evidence supports at least one of this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: Promoting healthy blood sugar naturally.
  • We looked for evidence on: Diabetes, Impaired glucose tolerance (Prediabetes), Hypoglycemia, Metabolic syndrome, Dyslipidemia, Hyperlipidemia — and 4 related terms.
  • The strongest evidence on file: Biotin is rated "Likely Effective" for Biotin deficiency (Natural Medicines).
  • Also on file: Chromium is rated "Likely Effective" for Chromium deficiency.
  • Also on file: Chromium is rated "Possibly Effective" for Diabetes.

The evidence supporting this formula's effectiveness is limited. None of its active ingredients has a rating stronger than "possibly effective" for blood sugar or glucose-related conditions.

Biotin is likely effective only for biotin deficiency itself, not for blood sugar management. Chromium is possibly effective for diabetes, but cinnamon bark extract, gymnema sylvestre, and banaba all show insufficient evidence for their use in diabetes, prediabetes, or metabolic syndrome in our data.

If blood sugar support is your goal, talk with your doctor about whether the evidence for these ingredients matches your needs.

The evidence, ingredient by ingredient Biotin Cassia Cinnamon Chromium Gymnema Banaba

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 5 of the 5 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 5 of 5.
  • General safety write-ups exist for 5 of 5.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Biotin is generally well tolerated, even at higher doses, though rare mild diarrhea and one unusual case of inflammation around the heart lining have been reported with very high doses. Cinnamon bark extract is likely safe in food amounts but may harm the liver if taken in large doses long-term because it contains coumarin; one patient reported a rash during a trial.

Chromium is usually well tolerated at typical supplement doses but may cause gastrointestinal irritation, headaches, mood changes, or skin rashes; rare serious cases of kidney and liver damage have been reported with high doses. Gymnema and banaba are generally well tolerated short-term, though gymnema has been linked to a rare case of hepatitis, and long-term safety data is limited for both.

Gymnema and banaba should not be used during pregnancy or breastfeeding due to insufficient safety data.

Side effects, ingredient by ingredient Biotin Cassia Cinnamon Chromium Gymnema Banaba

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 4 of the 5 matched ingredients can interact with medications — Gymnema, Chromium, Cassia Cinnamon, Banaba.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 1,178 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Before taking this product, double-check your medications for interactions, especially if you take antidiabetes drugs (chromium, gymnema, and banaba may increase low blood sugar risk — Moderate severity); levothyroxine or other thyroid medication (chromium may reduce absorption — Moderate severity); drugs metabolized by your liver's CYP1A2, CYP2C9, or CYP3A4 enzymes (gymnema may change their levels — Moderate severity); antihypertensive drugs for blood pressure (cinnamon and banaba may lower it further — Moderate severity); or NSAIDs or aspirin (chromium levels may increase — Minor severity). Use the medication checker below to verify your prescriptions.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with clinical evidence supporting its stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

This product combines several traditional blood-sugar-support ingredients, but the evidence for their effectiveness is incomplete. Because it interacts with diabetes medications, blood pressure medications, thyroid medications, and many others metabolized by your liver, it's essential to review your exact medications with your doctor or pharmacist before starting it.

If you take any prescription drugs, especially for diabetes, thyroid function, or blood pressure, check them against the tool on this page first.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 5 of 5 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 25, 2013.

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

At a glance

General information

Key facts about Dr. Cutler's Ultimate Blood Sugar Formula, straight from the product label.

Brand True Health
Net contents 60 Capsule(s)
Market status On market
Date entered into DSLD Jan 25, 2013
DSLD ID 16731
Product type Botanical With Nutrients
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
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 Dr. Cutler's Ultimate Blood Sugar Formula by True Health, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
30
IngredientAmount% DV
Biotin9000 mcg3000%
Cinnamon bark extract1 g--
Chromium400 mcg333%
Gymnema sylvestre leaf extract200 mg--
Banaba (Lagerstroemia speciosa) leaf extract48 mg--

Other ingredients: Gelatin, Magnesium Stearate, Silicon Dioxide

Tap any ingredient to jump to its full detail below.

Label statements
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.
Seals/Symbols

SCIENTIFICALLY FORMULATED DOCTOR APPROVED

MADE IN U.S.A. (flag)

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Suggested Use: Take two capsules daily in divided doses before meals or as directed by your healthcare professional.

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

Promoting Healthy Blood Sugar Naturally*

This product is manufactured in a NSF GMP registered facility.

Contains the World's Finest Ingredients.

Precautions

Caution: Consult your healthcare professional prior to using this product if you are pregnant, nursing, taking medication(s), have a medical condition, or are under the age of 12 years.

KEEP OUT OF REACH OF CHILDREN.

Storage

STORE IN A COOL, DRY PLACE.

Brand IP Statement(s)

ChromeMate(R)

ChromeMate brand niacin-bound chromium. ChromeMate is a registered trademark of InterHealth N.I.

General

300-TUBSFC-B

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Dr. Cutler's Ultimate Blood Sugar Formula by True Health label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Dr. Cutler's Ultimate Blood Sugar Formula label

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)
What’s inside

The Ingredients in Dr. Cutler's Ultimate Blood Sugar Formula by True Health

These are the 5 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 Capsule(s) Dosage formCapsule Servings per container30 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.

Biotin

No known
interactions
9000 mcg per serving

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get...

Biotin monograph & interactions

Cinnamon bark extract

Interacts with
442 drugs
1 g per serving

Cassia cinnamon is the common, inexpensive cinnamon used in cooking, and it is also taken as a supplement, most often for blood sugar support. The evi...

Cinnamon bark extract monograph & interactions

Chromium

Interacts with
178 drugs
400 mcg per serving Form: O-Polynicotinate

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 & interactions

Gymnema sylvestre leaf extract

Interacts with
851 drugs
200 mg per serving Form: Gymnemic Acid

Gymnema is an Ayurvedic herb best known for possibly helping lower blood sugar and reducing the taste of sweetness on the tongue. Some early human stu...

Gymnema sylvestre leaf extract monograph & interactions

Banaba (Lagerstroemia speciosa) leaf extract

Interacts with
299 drugs
48 mg per serving Form: Corosolic Acid

Banaba is a leaf extract most often used to help support healthy blood sugar, and small early studies suggest its active compound corosolic acid may m...

Banaba (Lagerstroemia speciosa) leaf extract monograph & interactions

Other (inactive) ingredients: Gelatin, Magnesium Stearate, Silicon Dioxide. These complete the product’s ingredient list but are not active constituents.

Interaction report

Dr. Cutler's Ultimate Blood Sugar Formula by True Health Drug Interactions

Want to check YOUR meds against Dr. Cutler's Ultimate Blood Sugar Formula?

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 checker
1,177Drugs
746 Moderate 431 Minor

Ingredients driving the most interactions

Gymnema sylvestre leaf extract 851
Cinnamon bark extract 442
Banaba (Lagerstroemia speciosa) leaf extract 299
Chromium 178

Individual Drug Interactions

The ingredients in Dr. Cutler's Ultimate Blood Sugar Formula interact with 1,177 drugs. Click any drug to see the details.

4 of the 5 ingredients in Dr. Cutler's Ultimate Blood Sugar Formula interact with drugs. Each result below shows which ingredient is responsible. Gymnema sylvestre leaf extract Cinnamon bark extract Banaba (Lagerstroemia speciosa) leaf extract Chromium

Each ingredient & the kinds of drugs it affects

For each ingredient in Dr. Cutler's Ultimate Blood Sugar Formula 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.

Gymnema sylvestre leaf extract6 drug types · 851 drugs

Antidiabetes Drugs

Theoretically, taking gymnema with antidiabetes drugs might increase the risk of hypoglycemia.
Gymnema reduces blood glucose levels in some human and animal research. In human studies, it has been shown to enhance the blood glucose lowering effects of hypoglycemic drugs. However, other research in adults with prediabetes or metabolic syndrome suggests that gymnema does not reduce fasting levels of blood glucose. Until more is known, monitor blood glucose levels closely.

Likelihood Probable Evidence B
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, gymnema might increase levels of drugs metabolized by CYP1A2.
Animal and in vitro research shows that gymnema can inhibit the CYP1A2 enzyme. In one animal study, oral administration of gymnema for 7 days increased the plasma concentrations of phenacetin, a CYP1A2 substrate, by about 1.4-fold and reduced the clearance of phenacetin by about 29%.

Likelihood Possible Evidence D
Cytochrome P450 2C9 (Cyp2C9) Substrates

Theoretically, gymnema might increase or decrease levels of drugs metabolized by CYP2C9.
Animal research shows that gymnema can induce the CYP2C9 enzyme. In one animal study, gymnema caused a 2.4-fold increase in the clearance of tolbutamide, a CYP2C9 substrate, in rats. In vitro research also shows that gymnema can inhibit CYP2C9.

Likelihood Possible Evidence D
Phenacetin

Theoretically, taking gymnema with phenacetin might increase the levels of phenacetin.
Animal research shows that gymnema, administered orally for 7 days, decreases the clearance of phenacetin in a dose-dependent manner by about 21% to 29% and increases plasma levels about 1.3- to 1.4-fold when compared to control.

Likelihood Possible Evidence D
Tolbutamide (Orinase)

Theoretically, taking gymnema with tolbutamide might the decrease levels of tolbutamide.
Animal research shows that gymnema, administered orally for 7 days, increases the clearance of tolbutamide by 2.4-fold when compared to control.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Substrates

Theoretically, gymnema might increase levels of drugs metabolized by CYP3A4.
One in vitro study using rat liver microsomes shows that gymnema can modestly inhibit the CYP3A4 enzyme. However, other in vitro research using human liver microsomes shows that gymnema does not affect CYP3A4 activity. Animal research also shows that gymnema does not alter the function of CYP3A4. In one study in rats, oral administration of gymnema for 7 days did not alter the clearance of amlodipine, a CYP3A4 substrate.

Likelihood Unlikely Evidence D
Gymnema sylvestre leaf extract full monograph & interactions

Cinnamon bark extract2 drug types · 442 drugs

Antidiabetes Drugs

Theoretically, cassia cinnamon may have additive effects with antidiabetes drugs.
Cassia cinnamon may lower blood glucose levels, and have additive effects in patients treated with antidiabetic agents. Dose adjustments to diabetes medications might be necessary.

Likelihood Possible Evidence B
Hepatotoxic Drugs

Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
There is some concern that ingesting large amounts of cassia cinnamon for an extended duration might cause hepatotoxicity in some people. Cassia cinnamon contains coumarin, which can cause hepatotoxicity in animal models. In humans, very high doses of coumarin from 50-7000 mg/day can result in hepatotoxicity that resolves when coumarin use is discontinued. Lower amounts might also cause liver problems in sensitive people, such as those with liver disease or those taking potentially hepatotoxic agents.

Likelihood Possible Evidence D
Cinnamon bark extract full monograph & interactions

Banaba (Lagerstroemia speciosa) leaf extract3 drug types · 299 drugs

Antidiabetes Drugs

Theoretically, concomitant use of banaba and hypoglycemic drugs might have additive effects.
Human and animal research suggests that banaba can lower blood glucose levels.

Likelihood Probable Evidence B
Antihypertensive Drugs

Theoretically, concomitant use of banaba and antihypertensive drugs might cause additive effects.
Human and animal research suggests that banaba can lower blood pressure.

Likelihood Probable Evidence B
Organic Anion-Transporting Polypeptide Substrates (Oatp)

Theoretically, concomitant use of banaba with substrates of OATP might reduce the bioavailability of the OATP substrate.
In vitro research shows that banaba inhibits OATP, particularly OATP2B1. OATPs are expressed in the small intestine and liver and are responsible for the absorption of drugs and other compounds.

Likelihood Possible Evidence D
Banaba (Lagerstroemia speciosa) leaf extract full monograph & interactions

Chromium5 drug types · 178 drugs

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.

Likelihood Possible Evidence A
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,

Likelihood Possible Evidence B
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.

Likelihood Probable Evidence B
Aspirin

Theoretically, aspirin might increase chromium absorption.
Animal research suggests that aspirin may increase chromium absorption and chromium levels in the blood.

Likelihood Possible Evidence D
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.

Likelihood Possible Evidence D
Chromium full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Dr. Cutler's Ultimate Blood Sugar Formula, from the product label.

True Health

See all True Health products
Name
True Health(TM)
Street Address
P.O. Box 3703
City
Hueytown
State
AL
ZipCode
35023
Phone Number
1-800-746-4513
Web Address
www.TrueHealth.com
Pharmacist Counseling Corner

Dr. Cutler's Ultimate Blood Sugar Formula by True Health: Common Questions

Does Dr. Cutler's Ultimate Blood Sugar Formula by True Health interact with any medications?
Yes. Based on its ingredients, Dr. Cutler's Ultimate Blood Sugar Formula has a known interaction with 1,177 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Dr. Cutler's Ultimate Blood Sugar Formula contains 5 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Does this product have any ingredients without known interactions?
Yes. Biotin, one of the five active ingredients, has no documented interactions in our data. The other four — cinnamon bark extract, chromium, gymnema, and banaba — do interact with medications, so those are the ones you'll want to check against your prescriptions.
Can I take this if I'm on a diabetes medication?
That depends on your specific medication and dose. Chromium, gymnema, and banaba may all lower blood sugar, so combining them with diabetes drugs could increase your risk of low blood sugar. Talk with your doctor or pharmacist about whether it's safe for you and whether your diabetes medication dose might need adjustment.
Is this safe to take during pregnancy or while breastfeeding?
Biotin and cinnamon are likely safe in pregnancy. Chromium is likely safe in pregnancy based on the data we hold. However, gymnema and banaba don't have enough safety information, so the data advises against using them during pregnancy or breastfeeding. Talk with your doctor or pharmacist about which ingredients may be right for you if you're pregnant or nursing.
What does each ingredient do?
Biotin supports hair and skin health and is likely effective for biotin deficiency. Cinnamon bark extract, chromium, gymnema, and banaba are traditional or researched ingredients included for blood sugar support, though the evidence for their effectiveness is incomplete or insufficient in the data we hold.
Does this contain any fillers or artificial ingredients?
The capsules contain gelatin, magnesium stearate, and silicon dioxide as inactive ingredients — these are binders and capsule materials, not fillers in the sense of inert bulk additives. The product is a standard capsule formulation without other added excipients listed.
Are there side effects I should know about?
Biotin rarely causes mild diarrhea at high doses. Cinnamon may cause a rash in rare cases. Chromium may cause gastrointestinal irritation, headaches, or mood changes; serious effects like kidney or liver damage are very rare but reported. Gymnema and banaba are generally well tolerated short-term, though gymnema has been linked to hepatitis in one case. Talk with your doctor if you develop any unusual symptoms.

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

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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.

Dr. Cutler's Ultimate Blood Sugar Formula label
Go deeper

The Full Monographs Behind Dr. Cutler's Ultimate Blood Sugar Formula’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Biotin

Biotin (vitamin B7) is a water-soluble vitamin your body needs to turn food into energy and to support healthy hair, skin, and nails. Most people get plenty from a normal diet, and true defi...

Read the full Biotin monograph → Herb & supplement monograph

Cassia Cinnamon

Interacts with 442 drugs

Cassia cinnamon is the common, inexpensive cinnamon used in cooking, and it is also taken as a supplement, most often for blood sugar support. The evidence for its health benefits is mixed a...

Read the full Cassia Cinnamon monograph → Herb & supplement monograph

Chromium

Interacts with 178 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 in certain people with type 2 diabetes, b...

Read the full Chromium monograph → Herb & supplement monograph

Gymnema

Interacts with 851 drugs

Gymnema is an Ayurvedic herb best known for possibly helping lower blood sugar and reducing the taste of sweetness on the tongue. Some early human studies are encouraging for blood sugar sup...

Read the full Gymnema monograph → Herb & supplement monograph

Banaba

Interacts with 299 drugs

Banaba is a leaf extract most often used to help support healthy blood sugar, and small early studies suggest its active compound corosolic acid may modestly lower glucose. The overall evide...

Read the full Banaba monograph →
Sources

Sources & How We Checked

Dr. Cutler's Ultimate Blood Sugar Formula'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.

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 96 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.

Biotin 4 references
  1. Debourdeau PM, Djezzar S, Estival JL, et al. Life-threatening eosinophilic pleuropericardial effusion related to vitamins B5 and H. Ann Pharmacother 2001;35:424-6. DOI
  2. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Pantothenic Acid, Biotin, and Choline (2000). Washington, DC: National Academy Press, 2000. Available at: http://b
  3. Mock DM, Quirk JG, Mock NI. Marginal biotin deficiency during normal pregnancy. Am J Clin Nutr 2002;75:295-9. PubMed
  4. Sedel F, Papeix C, Bellanger A, Touitou V, Lebrun-Frenay C, Galanaud D, et al. High doses of biotin in chronic progressive multiple sclerosis: a pilot study.Mult Scler Relat Disord. 2015;4(2):159-69. doi: 10.1016/j.msard.2015.01.005. PubMed

See these in context on the Biotin monograph →

Cassia Cinnamon 20 references
  1. Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
  2. Khan A, Safdar M, Ali Khan M, et al. Cinnamon improves glucose and lipids of people with type 2 diabetes. Diabetes Care 2003;26:3215-8. PubMed
  3. De Benito V, Alzaga R. Occupational allergic contact dermatitis from cassia (Chinese cinnamon) as a flavouring agent in coffee. Contact Dermatitis 1999;40:165. PubMed
  4. Drake TE, Maibach HI. Allergic contact dermatitis and stomatitis caused by a cinnamic aldehyde-flavored toothpaste. Arch Dermatol 1976;112:202-3.
  5. Press release. Cinnamon capsules to reduce blood sugar are medicinal products! Efficacy has not been scientifically proven - some products contain high levels of coumarin. Federal Institute of Risk Assessment (BfM), Germany, November 11, 2006. Available a
  6. Felter SP, Vassallo JD, Carlton BD, Daston GP. A safety assessment of coumarin taking into account species-specificity of toxicokinetics. Food Chem Toxicol 2006;44:462-75. PubMed
  7. Crawford P. Effectiveness of cinnamon for lowering hemoglobin A1C in patients with type 2 diabetes: a randomized, controlled trial. J Am Board Fam Med 2009;22:507-12. PubMed
  8. Akilen, R., Tsiami, A., Devendra, D., and Robinson, N. Glycated haemoglobin and blood pressure-lowering effect of cinnamon in multi-ethnic Type 2 diabetic patients in the UK: a randomized, placebo-controlled, double-blind clinical trial. Diabet.Med. 2010; PubMed
  9. Lu T, Sheng H Wu J Cheng Y Zhu J Chen Y. Cinnamon extract improves fasting blood glucose and glycosylated hemoglobin level in Chinese patients with type 2 diabetes. Nutr Res. 2012;32(6):408-412. PubMed
  10. Choi, J., Lee, K. T., Ka, H., Jung, W. T., Jung, H. J., and Park, H. J. Constituents of the essential oil of the Cinnamomum cassia stem bark and the biological properties. Arch Pharm Res 2001;24(5):418-423.
  11. Altschuler JA, Casella SJ, MacKenzie TA, Curtis KM. The effect of cinnamon on A1C among adolescents with type 1 diabetes. Diabetes Care 2007;30(4):813-6. PubMed
  12. Stoecker BR, Zhan Z, Luo R, et al. Cinnamon extract lowers blood glucose in hyperglycemic subjects. FASEB J. 2010;22:722.1 (Abstract only). DOI
  13. Admani S, Hill H, Jacob SE. Cinnamon Sugar Scrub Dermatitis: "Natural" Is Not Always Best. Pediatr Dermatol. 2017;34(1):e42-e43. PubMed
  14. Isaac-Renton M, Li MK, Parsons LM. Cinnamon spice and everything not nice: many features of intraoral allergy to cinnamic aldehyde. Dermatitis. 2015;26(3):116-21. PubMed
  15. Vandersall A, Katta R. Eyelid dermatitis as a manifestation of systemic contact dermatitis to cinnamon. Dermatitis. 2015 Jul-Aug;26(4):189. PubMed
  16. Wickenberg J, Lindstedt S, Nilsson J, Hlebowicz J. Cassia cinnamon does not change the insulin sensitivity or the liver enzymes in subjects with impaired glucose tolerance. Nutr J 2014 Sep 24;13:96. PubMed
  17. Brancheau D, Patel B, Zughaib M. Do cinnamon supplements cause acute hepatitis? Am J Case Rep 2015;16:250-4. PubMed
  18. Shekarchizadeh-Esfahani P, Heydarpour F, Izadi F, Jalili C. The effect of cinnamon supplementation on liver enzymes in adults: A systematic review and meta-analysis of randomized controlled trials. Complement Ther Med 2021;58:102699. PubMed
  19. Bernaola J, Valverde-Monge M, Otal-Buesa M, Cullen D, Heras-Mendaza F. Cinnamon allergic contact cheilitis. Contact Dermatitis 2023;88(5):418-419. PubMed
  20. Patel K, Howard M, Tate B. Cheilitis caused by allergic contact dermatitis to cinnamon in chai tea: A case report. Contact Dermatitis 2023;88(3):239-240. PubMed

See these in context on the Cassia Cinnamon monograph →

Chromium 53 references
  1. Cerulli J, Grabe DW, Gauthier I, et al. Chromium picolinate toxicity. Ann Pharmacother 1998;32:428-31. PubMed
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Gymnema 12 references
  1. Shanmugasundaram ER, Rajeswari G, Baskaran K, et al. Use of Gymnema sylvestre leaf extract in the control of blood glucose in insulin-dependent diabetes mellitus. J Ethnopharmacol 1990;30:281-94. PubMed
  2. Baskaran K, Kizar Ahamath B, Radha Shanmugasundaram K, Shanmugasundaram ER. Antidiabetic effect of leaf extract from Gymnema sylvestre in non-insulin-dependent diabetes mellitus patients. J Ethnopharmacol 1990;30:295-300.
  3. Kamble B, Gupta A, Moothedath I, Khatal L, Janrao S, Jadhav A, et al. Effects of Gymnema sylvestre extract on the pharmacokinetics and pharmacodynamics of glimepiride in streptozotocin induced diabetic rats. Chem Biol Interact. 2016;245:30-8. PubMed
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See these in context on the Gymnema monograph →

Banaba 7 references
  1. Judy WV, Hari SP, Stogsdill WW, et al. Antidiabetic activity of a standardized extract (Glucosol) from Lagerstroemia speciosa leaves in Type II diabetics. A dose-dependence study. J Ethnopharmacol 2003;87:115-7. PubMed
  2. Kakuda T, Sakane I, Takihara T, et al. Hypoglycemic effect of extracts from Lagerstroemia speciosa L. leaves in genetically diabetic KK-AY mice. Biosci Biotechnol Biochem 1996;60:204-8.
  3. Fukushima, M., Matsuyama, F., Ueda, N., Egawa, K., Takemoto, J., Kajimoto, Y., Yonaha, N., Miura, T., Kaneko, T., Nishi, Y., Mitsui, R., Fujita, Y., Yamada, Y., and Seino, Y. Effect of corosolic acid on postchallenge plasma glucose levels. Diabetes Res C PubMed
  4. Yamaguchi, Y., Yamada, K., Yoshikawa, N., Nakamura, K., Haginaka, J., and Kunitomo, M. Corosolic acid prevents oxidative stress, inflammation and hypertension in SHR/NDmcr-cp rats, a model of metabolic syndrome. Life Sci 11-25-2006;79(26):2474-2479. PubMed
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  6. Manaf A, Tjandrawinata RR, Malinda D. Insulin sensitizer in prediabetes: a clinical study with DLBS3233, a combined bioactive fraction of Cinnamomum burmanii and Lagerstroemia speciosa. Drug Des Devel Ther. 2016;10:1279-89. PubMed
  7. Tjokroprawiro A, Murtiwi S, Tjandrawinata RR. DLBS3233, a combined bioactive fraction of Cinnamomum burmanii and Lagerstroemia speciosa, in type-2 diabetes mellitus patients inadequately controlled by metformin and other oral antidiabetic agents. J Comple

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