Reduce Ingredients & Drug Interactions
by Enzymedica
What is this page for?
First and foremost: checking Reduce 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
Reduce is a dietary supplement by Enzymedica with 4 active ingredients. Its ingredients are commonly taken for blood sugar support in type 2 diabetes, weight loss and appetite control, insulin sensitivity.Based on those ingredients, 550 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Cinnamon Extract 20:1, Chromium Picolinate, Zinc Gluconate. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against Reduce by Enzymedica
Ask about any prescription or over-the-counter medication and we check it for interactions with Reduce by Enzymedica — 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 Reduce by Enzymedica
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
Reduce contains 4 active ingredients. Chromium picolinate helps your body use glucose and is checked for deficiency and diabetes support.
Zinc gluconate is an essential mineral for immune function and wound healing. Cinnamon extract (a 20:1 concentration) is included for potential blood sugar effects.
The product also contains Glucoreductase, though we hold no data on what this ingredient does. The capsule itself is vegetarian.
Does it work?
Strong evidence
The evidence here is mixed. Chromium is likely effective for chromium deficiency and possibly effective for diabetes, though possibly ineffective for prediabetes.
Zinc is effective for zinc deficiency and possibly effective for acne, age-related macular degeneration, and diabetes. Cinnamon extract has insufficient evidence for any of the conditions listed in our data—including diabetes, which is what this product seems designed for.
We don't hold effectiveness data for Glucoreductase.
How safe is it?
Well-documented data
Chromium is generally well tolerated at normal doses, but high or long-term doses carry risks. The most common side effects are gastrointestinal irritation, headaches, insomnia, and mood changes.
Rare but serious effects include kidney and liver damage and blood cell problems. Zinc is also well tolerated below 40 mg daily; above that, copper deficiency becomes a concern.
Common side effects are nausea, diarrhea, abdominal cramps, and a metallic taste. Cinnamon extract is generally safe in food amounts, but supplement doses high in coumarin (a compound in cinnamon) may harm your liver over time.
Pregnancy and lactation safety data are not on file for chromium or zinc. Cinnamon extract is rated likely safe in pregnancy, but high-dose supplements should be avoided.
Talk to your doctor or pharmacist before taking this product if you're pregnant or breastfeeding.
Meds to double-check
Moderate interaction found
Check these medication types before you start: insulin and antidiabetes drugs (moderate risk of low blood sugar), quinolone and tetracycline antibiotics (reduced antibiotic levels), hepatotoxic drugs, and HIV medications including integrase inhibitors and ritonavir. Cephalexin, penicillamine, and cisplatin also interact.
Timing separations for antibiotics are critical.
The bottom line
Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.
This product is meant to support blood sugar control, but it works best if you don't have diabetes—or if you do, only under your doctor's watch, because it can lower blood sugar further. If you take insulin, antidiabetes drugs, antibiotics, or HIV medications, you need to check your exact prescriptions with the tool on this page before starting.
Talk to your pharmacist about timing and whether your doses need adjusting.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 3 of 4 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Apr 25, 2014.
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 Reduce, straight from the product label.
| Brand | Enzymedica |
|---|---|
| Barcode (UPC) | 670480280416 |
| Net contents | 90 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Apr 25, 2014 |
| DSLD ID | 32653 |
| Product type | Other Combinations |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free |
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 Reduce by Enzymedica, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Chromium Picolinate | 250 mcg | 209% |
| Zinc Gluconate | 15 mg | 100% |
| Glucoreductase | 75000 Unit(s) | -- |
| Cinnamon Extract 20:1 | 50 mg | -- |
Other ingredients: 100% Vegetarian Capsule
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.
General Statements
premiere research
We Support:
Enzymedica is certified carbon neutral.
Blood Sugar Balance & Support* - Scientifically proven+ - Supports stabilized glucose levels* - Slows absorption of dietary sugars*
Made in USA
PLANT-BASED ENZYMES
The Enzyme Experts
+Scientifically proven formula. Study summary is available at www.enzymedica.com/downloads.php.
Storage
Keep closed in dry place; do not expose to excessive heat.
Seals/Symbols
vitaminangels
Autism Hope Alliance
Autism
VERIFIED BeGreen
FDA Statement of Identity
DIETARY SUPPLEMENT
Formulation
CONTAINS NO dairy, preservatives, salt, sucrose, soy, wheat, yeast, nuts, corn, gluten, casein, potato, rice, artificial colors or flavors.
VEGETARIAN & VEGAN
VEGETARIAN & VEGAN
ABSOLUTELY NO FILLERS ADDED
Precautions
PLEASE KEEP OUT OF REACH OF CHILDREN
Brand IP Statement(s)
Reduce(TM) was formulated to slow absorption of dietary sugars and enhance absorption of glucose into cells.
Formula
Reduce contains a proprietary enzyme blend called Glucoreductase(TM) and is clinically shown to support healthy blood sugar (glucose) regulation.*
Suggested/Recommended/Usage/Directions
Recommended Usage: Take 1 capsule at the beginning of any meal that may raise blood sugar (glucose). More may be taken as needed (up to 4 per meal). When taking 4 per meal, take 2 at the beginning of the meal and 2 mid-meal.
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.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Reduce by Enzymedica 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 Reduce by Enzymedica
These are the 4 active ingredients this product is made of. Select any to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule Servings per container90 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.
Chromium Picolinate
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 Picolinate monograph & interactionsZinc Gluconate
Interacts with67 drugs
Zinc is an essential mineral that your body needs for immune function, wound healing, taste, and smell. Most people get enough from food, but suppleme...
Zinc Gluconate monograph & interactionsGlucoreductase
Cinnamon Extract 20:1
Interacts with442 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 evi...
Cinnamon Extract 20:1 monograph & interactionsOther (inactive) ingredients: 100% Vegetarian Capsule. These complete the product’s ingredient list but are not active constituents.
Reduce by Enzymedica Drug Interactions
HelloPharmacist Interaction Report
Enzymedica Reduce contains ingredients that do interact with medications, and the most serious concerns involve blood sugar control.
Chromium picolinate can increase insulin sensitivity and may work additively with insulin and antidiabetes drugs (like metformin or sulfonylureas), raising your risk of low blood sugar (hypoglycemia). If you take insulin or diabetes medication, your dose may need adjustment.
Read the full breakdown — every affected drug type, severity by severity
Zinc gluconate affects several antibiotic types. It forms complexes in your gut that block absorption of quinolones (like ciprofloxacin), tetracyclines (like doxycycline), and cephalexin, reducing how well these drugs work.
Zinc also interferes with penicillamine (used for rheumatoid arthritis and Wilson disease), ritonavir (an HIV medication), cisplatin (a cancer drug), and integrase inhibitors used in HIV treatment. Timing matters: take quinolones and tetracyclines at least 2 hours before or 4–6 hours after this product.
Cinnamon extract may also lower blood sugar and could add to the effect of diabetes medications. Additionally, at high doses cinnamon may stress the liver, so use caution if you're on medications that affect liver function.
We could not check Glucoreductase—we hold no data for it.
Altogether, these interactions span 532 individual medications. Use the search tool on this page to check your exact prescriptions before you start.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against Reduce?
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 Reduce interact with 550 drugs. Click any drug to see the details.
3 of the 4 ingredients in Reduce interact with drugs. Each result below shows which ingredient is responsible. Cinnamon Extract 20:1 Chromium Picolinate Zinc Gluconate
Asparaginase Erwinia Chrysanthemi (recombinant)-rywnRylaze
How Asparaginase Erwinia Chrysanthemi (recombinant)-rywn interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Asparaginase Erwinia Chrysanthemi (recombinant)-rywn interactionAspirin, Caffeine, Phenacetin, PropoxypheneMargesic Comp. 65
How Aspirin, Caffeine, Phenacetin, Propoxyphene interacts with Reduce — through 2 ingredients. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Aspirin, Caffeine, Phenacetin, Propoxyphene interactionChromium PicolinateNonsteroidal Anti-inflammatory Drugs (nsaids), Aspirin Minor
Interaction Summary
NSAIDs might increase chromium levels in the body.
Read the full Chromium Picolinate + Aspirin, Caffeine, Phenacetin, Propoxyphene interactionAtorvastatinAtorvaliq
How Atorvastatin interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Atorvastatin interactionAtorvastatin CalciumLipitor
How Atorvastatin Calcium interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Atorvastatin Calcium interactionAvacopanTavneos
How Avacopan interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Avacopan interactionAzamuneImmunoprin
How Azamune interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Azamune interactionAzathioprineAzamune, Imuran
How Azathioprine interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Azathioprine interactionBaricitinibOlumiant
How Baricitinib interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Baricitinib interactionBelinostatBeleodaq
How Belinostat interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Belinostat interactionBenzhydrocodone, AcetaminophenApadaz
How Benzhydrocodone, Acetaminophen interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Benzhydrocodone, Acetaminophen interactionBictegravir, Emtricitabine, Tenofovir AlafenamideBiktarvy
How Bictegravir, Emtricitabine, Tenofovir Alafenamide interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Zinc GluconateBictegravir/emtricitabine/tenofovir Alafenamide (biktarvy) Moderate
Interaction Summary
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Read the full Zinc Gluconate + Bictegravir, Emtricitabine, Tenofovir Alafenamide interactionBimekizumab-bkzxBimzelx
How Bimekizumab-bkzx interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Bimekizumab-bkzx interactionBinimetinibMektovi
How Binimetinib interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Binimetinib interactionBismuth Subsalicylate, Metronidazole, TetracyclineHelidac
How Bismuth Subsalicylate, Metronidazole, Tetracycline interacts with Reduce — through 2 ingredients. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Bismuth Subsalicylate, Metronidazole, Tetracycline interactionZinc GluconateTetracycline Antibiotics Moderate
Interaction Summary
Zinc might reduce levels of tetracycline antibiotics.
Read the full Zinc Gluconate + Bismuth Subsalicylate, Metronidazole, Tetracycline interactionBortezomibVelcade
How Bortezomib interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Bortezomib interactionBosentanTracleer
How Bosentan interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Bosentan interactionBosutinibBosulif
How Bosutinib interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Bosutinib interactionCanagliflozinInvokana
How Canagliflozin interacts with Reduce — through 2 ingredients. Tap an ingredient for the detail:
Chromium PicolinateAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, chromium may have additive effects with antidiabetic agents and increase the risk of hypoglycemia.
Read the full Chromium Picolinate + Canagliflozin interactionCinnamon Extract 20:1Antidiabetes Drugs Moderate
Interaction Summary
Theoretically, cassia cinnamon may have additive effects with antidiabetes drugs.
Read the full Cinnamon Extract 20:1 + Canagliflozin interactionCanagliflozin, MetforminInvokamet
How Canagliflozin, Metformin interacts with Reduce — through 2 ingredients. Tap an ingredient for the detail:
Cinnamon Extract 20:1Antidiabetes Drugs Moderate
Interaction Summary
Theoretically, cassia cinnamon may have additive effects with antidiabetes drugs.
Read the full Cinnamon Extract 20:1 + Canagliflozin, Metformin interactionChromium PicolinateAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, chromium may have additive effects with antidiabetic agents and increase the risk of hypoglycemia.
Read the full Chromium Picolinate + Canagliflozin, Metformin interactionCanagliflozin, Metformin HydrochlorideInvokamet XR
How Canagliflozin, Metformin Hydrochloride interacts with Reduce — through 2 ingredients. Tap an ingredient for the detail:
Chromium PicolinateAntidiabetes Drugs Moderate
Interaction Summary
Theoretically, chromium may have additive effects with antidiabetic agents and increase the risk of hypoglycemia.
Read the full Chromium Picolinate + Canagliflozin, Metformin Hydrochloride interactionCinnamon Extract 20:1Antidiabetes Drugs Moderate
Interaction Summary
Theoretically, cassia cinnamon may have additive effects with antidiabetes drugs.
Read the full Cinnamon Extract 20:1 + Canagliflozin, Metformin Hydrochloride interactionCannabidiol (prescription Drug)Epidiolex
How Cannabidiol (prescription Drug) interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Cannabidiol (prescription Drug) interactionCapmatinib HydrochlorideTabrecta
How Capmatinib Hydrochloride interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Capmatinib Hydrochloride interactionCarbamazepineCarbatrol, Carnexiv, Equetro, Tegretol, Tegretol XR
How Carbamazepine interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Carbamazepine interactionCarbenicillin Indanyl SodiumGeocillin
How Carbenicillin Indanyl Sodium interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Carbenicillin Indanyl Sodium interactionCarbimazoleNeo-Mercazole
How Carbimazole interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Carbimazole interactionCarfilzomibKyprolis
How Carfilzomib interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Carfilzomib interactionCephalexinCephalex, Keflex, Keftab, Lexin
How Cephalexin interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Zinc GluconateCephalexin (keflex) Moderate
Interaction Summary
Zinc might decrease cephalexin levels by chelating with cephalexin in the gut and preventing its absorption.
Read the full Zinc Gluconate + Cephalexin interactionCeritinibZykadia
How Ceritinib interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Ceritinib interactionCerivastatin SodiumBaycol
How Cerivastatin Sodium interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Cerivastatin Sodium interactionChlorothiazide, MethyldopaAldochlor, Aldoclor 150, Aldoclor 250
How Chlorothiazide, Methyldopa interacts with Reduce — through 1 ingredient. Tap an ingredient for the detail:
Cinnamon Extract 20:1Hepatotoxic Drugs Moderate
Interaction Summary
Theoretically, large doses of cassia cinnamon might cause additive effects when used with hepatotoxic drugs.
Read the full Cinnamon Extract 20:1 + Chlorothiazide, Methyldopa interactionEach ingredient & the kinds of drugs it affects
For each ingredient in Reduce 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.
Cinnamon Extract 20:1
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.
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.
Chromium Picolinate
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.
Zinc Gluconate
Bictegravir/Emtricitabine/Tenofovir Alafenamide (Biktarvy)
Theoretically, zinc might decrease levels of bictegravir/emtricitabine/tenofovir alafenamide by reducing its absorption.
Advise patients that bictegravir/emtricitabine/tenofovir alafenamide should be taken at least 2 hours before or 6 hours after zinc containing products.
Cephalexin (Keflex)
Zinc might decrease cephalexin levels by chelating with cephalexin in the gut and preventing its absorption.
A pharmacokinetic study shows that zinc sulfate 250 mg taken concomitantly with cephalexin 500 mg decreases peak levels of cephalexin by 31% and reduces the exposure to cephalexin by 27%. Also, taking zinc sulfate 3 hours before cephalexin decreases peak levels of cephalexin by 11% and reduces the exposure to cephalexin by 18%. By decreasing cephalexin levels, zinc might increase the risk of treatment failure. This effect does not occur when zinc is taken 3 hours after the cephalexin dose. To avoid an interaction, advise patients take zinc sulfate 3 hours after taking cephalexin.
Cisplatin (Platinol-Aq)
Theoretically, zinc might interfere with the therapeutic effects of cisplatin.
Animal research suggests that zinc stimulates tumor cell production of the protein metallothionein, which binds and inactivates cisplatin. It is not known whether zinc supplements or high dietary zinc intake can cause clinically significant interference with cisplatin therapy. Cisplatin might also increase zinc excretion.
Integrase Inhibitors
Theoretically, taking zinc along with integrase inhibitors might decrease the levels and clinical effects of these drugs.
Zinc is a divalent cation. Pharmacokinetic studies have shown that other divalent cations such as calcium and iron can decrease blood levels of the integrase inhibitor dolutegravir through chelation.
Penicillamine (Cuprimine, Depen)
Zinc might reduce the levels and clinical effects of penicillamine.
By forming an insoluble complex with penicillamine, zinc interferes with penicillamine absorption and activity. Zinc supplements reduce the efficacy of low-dose penicillamine (0.5-1 gram/day), but do not seem to affect higher doses (1-2.75 gram/day), provided dosing times are separated. Advise patients to take zinc and penicillamine at least 2 hours apart.
Quinolone Antibiotics
Zinc can decrease the levels and clinical effects of quinolones antibiotics.
Quinolones form complexes with zinc in the gastrointestinal tract, reducing absorption of both the quinolone and zinc if taken at the same time. Advise patients to take these drugs at least 2 hours before, or 4-6 hours after, zinc supplements.
Ritonavir (Norvir)
Zinc modestly reduces levels of ritonavir.
Clinical research shows that zinc might reduce serum ritonavir levels by chelating with ritonavir in the gut and preventing its absorption. In patients with HIV, ritonavir is taken with atazanavir to prevent the metabolism and increase the effects of atazanavir. A pharmacokinetic study shows that, in patients being treated with atazanavir/ritonavir, co-administration of zinc sulfate (Solvazinc tablets) 125 mg as a single dose or as multiple daily doses for 2 weeks reduces plasma levels of ritonavir by about 16%. However, atazanavir levels still remains high enough to prevent HIV virus replication. Therefore, the decrease in ritonavir levels is not likely to be clinically significant.
Tetracycline Antibiotics
Zinc might reduce levels of tetracycline antibiotics.
Tetracyclines form complexes with zinc in the gastrointestinal tract, which can reduce absorption of both the tetracycline and zinc when taken at the same time. Taking zinc sulfate 200 mg with tetracycline reduces absorption of the antibiotic by 30% to 40%. Demeclocycline and minocycline cause a similar interaction. However, doxycycline does not seem to interact significantly with zinc. Advise patients to take tetracyclines at least 2 hours before, or 4-6 hours after, zinc supplements to avoid any interactions.
Amiloride (Midamor)
Amiloride can modestly reduce zinc excretion and increase zinc levels.
Clinical research shows that amiloride can reduce urinary zinc excretion, especially at doses of 10 mg per day or more. This zinc-sparing effect can help to counteract zinc losses caused by thiazide diuretics, but it is unlikely to cause zinc toxicity at usual amiloride doses. The other potassium-sparing diuretics, spironolactone (Aldactone) and triamterene (Dyrenium), do not seem to have a zinc-sparing effect.
Atazanavir (Reyataz)
Zinc modestly reduces levels of atazanavir, although this effect does not seem to be clinically significant.
Clinical research shows that zinc might decrease serum atazanavir levels by chelating with atazanavir in the gut and preventing its absorption. Although a single dose of zinc sulfate (Solvazinc tablets) 125 mg orally does not affect atazanavir concentrations in patients being treated with atazanavir/ritonavir, co-administration of zinc sulfate 125 mg daily for 2 weeks reduces plasma levels of atazanavir by about 22% in these patients. However, despite this decrease, atazanavir levels still remain at high enough concentrations for the prevention of HIV virus replication.
Brand information
Manufacturer and brand details for Reduce, from the product label.
Enzymedica
See all Enzymedica products- Name
- Enzymedica, Inc.
- Street Address
- 752 Tamiami Trail
- City
- Port Charlotte
- State
- FL
- ZipCode
- 33953
- Phone Number
- 1-888-918-1118
- Web Address
- www.enzymedica.com
Reduce by Enzymedica: Common Questions
Does Reduce by Enzymedica interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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The Full Monographs Behind Reduce’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Chromium
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 → Herb & supplement monographZinc
Interacts with 67 drugsZinc is an essential mineral that your body needs for immune function, wound healing, taste, and smell. Most people get enough from food, but supplements can help correct or prevent a defici...
Read the full Zinc monograph → Herb & supplement monographCassia Cinnamon
Interacts with 442 drugsCassia 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 →Sources & How We Checked
Reduce'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 161 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.
Chromium 53 references
- Cerulli J, Grabe DW, Gauthier I, et al. Chromium picolinate toxicity. Ann Pharmacother 1998;32:428-31. PubMed
- Urberg M, Zemel MB. Evidence for synergism between chromium and nicotinic acid in the control of glucose tolerance in elderly humans. Metabolism 1987;36:896-9. PubMed
- Mohamedshah FY, Moser-Veillon PB, Yamini S, et al. Distribution of a stable isotope of chromium (53Cr) in serum, urine, and breast milk in lactating women. Am J Clin Nutr 1998;67:1250-5. PubMed
- Wasser WG, Feldman NS, D'Agati VD. Chronic renal failure after ingestion of over-the-counter chromium picolinate. [letter]. Ann Intern Med 1997;126:410. PubMed
- Mertz W. Interaction of chromium with insulin: a progress report. Nutr Rev 1998;56:174-7. PubMed
- Anderson RA. Chromium, glucose intolerance and diabetes. J Am Coll Nutr 1998;17:548-55. PubMed
- McLeod MN, Gaynes BN, Golden RN. Chromium potentiation of antidepressant pharmacotherapy for dysthymic disorder in 5 patients. J Clin Psych 1999;60:237-40. PubMed
- Fowler JF Jr. Systemic contact dermatitis caused by oral chromium picolinate. Cutis 2000;65:116. DOI
- Trent LK, Thieding-Cancel D. Effects of chromium picolinate on body composition. J Sports Med Phys Fitness 1995;35:273-80.
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
- Rabinovitz H, Friedensohn A, Leibovitz A, et al. Effect of chromium supplementation on blood glucose and lipid levels in type 2 diabetes mellitus elderly patients. Int J Vitam Nutr Res 2004;74:178-82. PubMed
- Lanca S, Alves A, Vieira AI, et al. Chromium-induced toxic hepatitis. Eur J Intern Med 2002;13:518-20. PubMed
- Kockler DR, McCarthy MW, Lawson CL. Seizure activity and unresponsiveness after hydroxycut ingestion. Pharmacotherapy 2001;21:647-51.. PubMed
- Davidson JR, Abraham K, Connor KM, McLeod MN. Effectiveness of chromium in atypical depression: a placebo-controlled trial. Biol Psychiatry 2003;53:261-4.. PubMed
- Food Standards Agency. Medicines and Healthcare products Regulatory Agency (MHRA). Expert Group on Vitamins and Minerals. Available at: http://cot.food.gov.uk/sites/default/files/vitmin2003.pdf.
- Mouser JF, Hak EB, Helms RA, et al. Chromium and zinc concentrations in pediatric patients receiving long-term parenteral nutrition. Am J Health Syst Pharm 1999;56:1950-6. PubMed
- Stevens T, Qadri A, Zein NN. Two patients with acute liver injury associated with use of the herbal weight-loss supplement hydroxycut. Ann Intern Med 2005;142:477-8. PubMed
- Wani S, Weskamp C, Marple J, Spry L. Acute tubular necrosis associated with chromium picolinate-containing dietary supplement. Ann Pharmacother 2006;40:563-6. PubMed
- Kleefstra N, Houweling ST, Jansman FG, et al. Chromium treatment has no effect in patients with poorly controlled, insulin-treated type 2 diabetes in an obese Western population: a randomized, double-blind, placebo-controlled trial. Diabetes Care 2006;29: PubMed
- Martin J, Wang ZQ, Zhang XH, et al. Chromium picolinate supplementation attenuates body weight gain and increases insulin sensitivity in subjects with type 2 diabetes. Diabetes Care 2006;29:1826-32. PubMed
- Singer GM, Geohas J. The effect of chromium picolinate and biotin supplementation on glycemic control in poorly controlled patients with type 2 diabetes mellitus: a placebo-controlled, double-blinded, randomized trial. Diabetes Technol Ther 2006;8:636-43. PubMed
- John-Kalarickal J, Pearlman G, Carlson HE. New medications which decrease levothyroxine absorption. Thyroid 2007;17:763-5. PubMed
- Yazaki Y, Faridi Z, Ma Y, et al. A pilot study of chromium picolinate for weight loss. J Altern Complement Med 2010;16:291-9. PubMed
- Davis ML, Seaborn CD, and Stoecker BJ. Effects of over-the-counter drugs on chromium retention and urinary excretion in rats. Nutrition Research 1995;15(2):201-210.
- Young P, Turiansky G, Bonner M, and et al. Acute generalized exanthematous pustulosis induced by chromium picolinate. J.Am Acad.Dermatol. 1999;41(5 Pt 2):820-823. PubMed
- Gibb, H. J., Lees, P. S., Pinsky, P. F., and Rooney, B. C. Lung cancer among workers in chromium chemical production. Am J Ind.Med 2000;38(2):115-126. DOI
- Gibb, H. J., Lees, P. S., Pinsky, P. F., and Rooney, B. C. Clinical findings of irritation among chromium chemical production workers. Am J Ind.Med 2000;38(2):127-131. PubMed
- Pittler, M. H. and Ernst, E. Dietary supplements for body-weight reduction: a systematic review. Am.J.Clin Nutr. 2004;79(4):529-536. PubMed
- Pei, D., Hsieh, C. H., Hung, Y. J., Li, J. C., Lee, C. H., and Kuo, S. W. The influence of chromium chloride-containing milk to glycemic control of patients with type 2 diabetes mellitus: a randomized, double-blind, placebo-controlled trial. Metabolism 2 PubMed
- Hisatomi, K., Ishii, H., Hashiguchi, K., Seki, M., Ide, M., Sugiyama, K., Ishimoto, H., Nakayama, S., Mukae, H., and Kohno, S. Interstitial pneumonia caused by inhalation of fumes of nickel and chrome. Respirology. 2006;11(6):814-817. PubMed
- Kleefstra, N., Houweling, S. T., Bakker, S. J., Verhoeven, S., Gans, R. O., Meyboom-de Jong, B., and Bilo, H. J. Chromium treatment has no effect in patients with type 2 diabetes in a Western population: a randomized, double-blind, placebo-controlled tri DOI
- Parsons, A., Ingram, J., Inglis, J., Aveyard, P., Johnstone, E., Brown, K., Franklin, M., and Bermudez, I. A proof of concept randomised placebo controlled factorial trial to examine the efficacy of St John's wort for smoking cessation and chromium to pr
- Bagdon RE and Hazen RE. Skin permeation and cutaneous hypersensitivity as a basis for making risk assessments of chromium as a soil contaminant. Environ.Health Perspect. 1991;92:111-119. PubMed
- Bharmal, S. V., Moyes, V., Ahmed, S., and Grossman, A. Hypoglycaemia: possible mediation by chromium salt medication. Hormones.(Athens.) 2010;9(2):181-183. PubMed
- Krol, E., Krejpcio, Z., Byks, H., Bogdanski, P., and Pupek-Musialik, D. Effects of chromium brewer's yeast supplementation on body mass, blood carbohydrates, and lipids and minerals in type 2 diabetic patients. Biol.Trace Elem.Res. 2011;143(2):726-737.
- Unisa, S., Jagannath, P., Dhir, V., Khandelwal, C., Sarangi, L., and Roy, T. K. Population-based study to estimate prevalence and determine risk factors of gallbladder diseases in the rural Gangetic basin of North India. HPB (Oxford) 2011;13(2):117-125. PubMed
- Noda, S., Asano, Y., and Sato, S. Lichen planus in a patient with long-term exposure to chrome. Eur.J.Dermatol. 2011;21(3):417-418. PubMed
- Xiang, J., Sun, Z., and Huan, J. N. Intensive chromic acid burns and acute chromium poisoning with acute renal failure. Chin Med.J.(Engl.) 7-5-2011;124(13):2071-2073.
- Chhabra, D., Oda, K., Jagannath, P., Utsunomiya, H., Takekoshi, S., and Nimura, Y. Chronic heavy metal exposure and gallbladder cancer risk in India, a comparative study with Japan. Asian Pac.J.Cancer Prev. 2012;13(1):187-190. PubMed
- Huszonek, J. Over-the-counter chromium picolinate. Am J Psychiatry 1993;150(10):1560-1561. PubMed
- Bunner S and McGinnis R. Chromium-induced hypoglycemia. Psychosomatics 1998;39(3):298-299. PubMed
- Martin, W. R. and Fuller, R. E. Suspected chromium picolinate-induced rhabdomyolysis. Pharmacotherapy 1998;18(4):860-862. DOI
- Proctor, D. M., Fredrick, M. M., Scott, P. K., Paustenbach, D. J., and Finley, B. L. The prevalence of chromium allergy in the United States and its implications for setting soil cleanup: a cost-effectiveness case study. Regul.Toxicol Pharmacol 1998;28(1 PubMed
- De Marchi S, Cecchin E, De Marchi SU. Systemic allergic dermatitis resulting from oral administration of chromium with a food supplement. Contact Dermatitis 2014;70(2):123-5. PubMed
- Hedberg YS, Gumulka M, Lind ML, Matura M, Lidén C. Severe occupational chromium allergy despite cement legislation. Contact Dermatitis. 2014;70(5):321-3. PubMed
- Thyssen JP, Jellesen MS, Møller P, Menné T, Johansen JD. Allergic chromium dermatitis from wearing 'chromium-free' footwear. Contact Dermatitis 2014;70(3):185-7. PubMed
- Liu Y, Cotillard A, Vatier C, et al. A Dietary Supplement Containing Cinnamon, Chromium and Carnosine Decreases Fasting Plasma Glucose and Increases Lean Mass in Overweight or Obese Pre-Diabetic Subjects: A Randomized, Placebo-Controlled Trial. PLoS One.
- Jamilian M, Asemi Z. Chromium Supplementation and the Effects on Metabolic Status in Women with Polycystic Ovary Syndrome: A Randomized, Double-Blind, Placebo-Controlled Trial. Ann Nutr Metab. 2015;67(1):42-8. PubMed
- Guimarães MM, Carvalho AC, Silva MS. Effect of chromium supplementation on the glucose homeostasis and anthropometry of type 2 diabetic patients: Double blind, randomized clinical trial: Chromium, glucose homeostasis and anthropometry. J Trace Elem Med Bi PubMed
- Paiva AN, Lima JG, Medeiros AC, et al. Beneficial effects of oral chromium picolinate supplementation on glycemic control in patients with type 2 diabetes: A randomized clinical study. J Trace Elem Med Biol. 2015;32:66-72. PubMed
- Yin RV, Phung OJ. Effect of chromium supplementation on glycated hemoglobin and fasting plasma glucose in patients with diabetes mellitus. Nutr J. 2015;14:14. PubMed
- Jamilian M, Zadeh Modarres S, Amiri Siavashani M, et al. The influences of chromium supplementation on glycemic control, markers of cardio-metabolic risk, and oxidative stress in infertile polycystic ovary syndrome women candidate for in vitro fertilizati
- Alinaghi F, Thyssen JP, Zachariae C, Johansen JD. No immediate effect of regulatory reduction of chromium in leather among adult patients with chromium allergy. Contact Dermatitis 2021;85(5):514-522. PubMed
Zinc 88 references
- Barceloux DG. Zinc. J Toxicol Clin Toxicol 1999;37:279-92.
- Eby GA, Davis DR, Halcomb WW. Reduction in duration of common colds by zinc gluconate lozenges in a double-blind study. Antimicrob Agents Chemother 1984;25:20-4. DOI
- Smith DS, Helzner EC, Nuttall CE Jr, et al. Failure of zinc gluconate in treatment of acute upper respiratory tract infections. Antimicrob Agents Chemother 1989;33:646-8. PubMed
- Blondeau JM. Expanded activity and utility of the new fluoroquinolones: a review. Clin Ther 1999;21:3-40. PubMed
- Reyes AJ, Olhaberry JV, Leary WP, et al. Urinary zinc excretion, diuretics, zinc deficiency and some side-effects of diuretics. S Afr Med J 1983;64:936-41.
- Kugelmas M. Preliminary observation: oral zinc sulfate replacement is effective in treating muscle cramps in cirrhotic patients. J Am Coll Nutr 2000;19:13-5. PubMed
- Hebel SK, ed. Drug Facts and Comparisons. 52nd ed. St. Louis: Facts and Comparisons, 1998.
- Chan S, Gerson B, Subramaniam S. The role of copper, molybdenum, selenium, and zinc in nutrition and health. Clin Lab Med 1998;18:673-85. DOI
- Brewer GJ, Yuzbasiyan-Gurkan V, Johnson V, et al. Treatment of Wilson's disease with zinc: XI. Interaction with other anticopper agents. J Am Coll Nutr 1993;12:26-30. PubMed
- Fosmire GJ. Zinc toxicity. Am J Clin Nutr 1990;51:225-7.
- Lomaestro BM, Bailie GR. Absorption interactions with fluoroquinolones. 1995 update. Drug Saf 1995;12:314-33. PubMed
- Hansten PD, Horn JR. Drug Interactions Analysis and Management. Vancouver, WA: Applied Therapeutics Inc., 1997 and updates.
- Seelig MS. Auto-immune complications of D-penicillamine - A possible result of zinc and magnesium depletion and of pyridoxine inactivation. J Am Coll Nutr 1982;1:207-14. PubMed
- Neuvonen PJ. Interactions with the absorption of tetracyclines. Drugs 1976;11:45-54.. PubMed
- Hirt M, Nobel S, Barron E. Zinc nasal gel for the treatment of common cold symptoms: A double-blind, placebo-controlled trial. Ear Nose Throat J 2000;79:778-82.. DOI
- Simkin PA. Oral zinc sulphate in rheumatoid arthritis. Lancet 1976;2:539-42. PubMed
- Wray D. A double-blind trial of systemic zinc sulfate in recurrent aphthous stomatitis. Oral Surg Oral Med Oral Pathol 1982;53:469-72. PubMed
- Douglas RM, Miles HB, Moore BW, et al. Failure of effervescent zinc acetate lozenges to alter the course of upper respiratory tract infections in Australian adults. Antimicrob Agents Chemother 1987;31:1263-5. PubMed
- Lagiou P, Wuu J, Trichopoulou A, et al. Diet and benign prostatic hyperplasia: a study in Greece. Urology 1999;54:284-90. PubMed
- Ewing CI, Gibbs AC, Ashcroft C, David TJ. Failure of oral zinc supplementation in atopic eczema. Eur J Clin Nutr 1991;45:507-10.
- Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Copper, Iodine, Iron, Manganese, Molybdenum, Nickel, Silicon, Vanadium, and Zinc. Washington, DC: National Academy Press, 2002.
- Age-Related Eye Disease Study Research Group. A randomized, placebo-controlled, clinical trial of high-dose supplementation with vitamins C and E, beta carotene, and zinc for age-related macular degeneration and vision loss. AREDS report no. 8. Arch Oph
- Greenberg JE, Lynn M, Kirsner RS, et al. Mucocutaneous pigmented macule as a result of zinc deposition. J Cutan Pathol 2002;29:613-5. PubMed
- Godfrey HR, Godfrey NJ, Godfrey JC, Riley D. A randomized clinical trial on the treatment of oral herpes with topical zinc oxide/glycine. Altern Ther Health Med 2001;7:49-56.
- Turner RB. Ineffectiveness of intranasal zinc gluconate for prevention of experimental rhinovirus colds. Clin Infect Dis 2001;33:1865-70. PubMed
- Belongia EA, Berg R, Liu K. A randomized trial of zinc nasal spray for the treatment of upper respiratory illness in adults. Am J Med 2001;111:103-8. PubMed
- Mossad SB. Effect of zincum gluconicum nasal gel on the duration and symptom severity of the common cold in otherwise healthy adults. QJM 2003;96:35-43. DOI
- Leitzmann MF, Stampfer MJ, Wu K, et al. Zinc supplement use and risk of prostate cancer. J Natl Cancer Inst 2003;95:1004-7.. PubMed
- Jafek BW, Linschoten M, Murrow BW. Zicam Induced Anosmia. American Rhinologic Society 49th Annual Fall Scientific Meeting abstract. Orlando, Florida. September 20, 2003. http://app.american-rhinologic.org/programs/2003ARSFallProgram071503.pdf (Accessed 24
- Uebayashi H, Hatanaka T, Kanemura F, Tonosaki K. Acute anosmia in the mouse: behavioral discrimination among the four basic taste substances. Physiol Behav 2001;72:291-6.. PubMed
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- Bilici M, Yildirim F, Kandil S, et al. Double-blind, placebo-controlled study of zinc sulfate in the treatment of attention deficit hyperactivity disorder. Prog Neuropsychopharmacol Biol Psychiatry 2004;28:181-90.. PubMed
- Polk RE, Healy DP, Sahai J, et al. Effect of ferrous sulfate and multivitamins with zinc on absorption of ciprofloxacin in normal volunteers. Antimicrob Agents Chemother 1989;33:1841-4. PubMed
- Mery C, Delrieu F, Ghozlan R, et al. Controlled trial of D-penicillamine in rheumatoid arthritis. Dose effect and the role of zinc. Scand J Rheumatol 1976;5:241-7. PubMed
- Penttila O, Hurme H, Neuvonen PJ. Effect of zinc sulfate on the absorption of tetracycline and doxycycline in man. Eur J Clin Pharmacol 1975;9:131-4.
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- Wester PO. Urinary zinc excretion during treatment with different diuretics. Acta Med Scand 1980;208:209-12. PubMed
- Golik A, Modai D, Weissgarten J, et al. Hydrochlorothiazide-amiloride causes excessive urinary zinc excretion. Clin Pharmacol Ther 1987;42:42-4. PubMed
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- McBride K, Slotnick B, Margolis FL. Does intranasal application of zinc sulfate produce anosmia in the mouse? An olfactometric and anatomical study. Chem Senses 2003;28:659-70. PubMed
- Burd GD. Morphological study of the effects of intranasal zinc sulfate irrigation on the mouse olfactory epithelium and olfactory bulb. Microsc Res Tech 1993;24:195-213. PubMed
- Ducray A, Bondier JR, Michel G, et al. Recovery following peripheral destruction of olfactory neurons in young and adult mice. Eur J Neurosci 2002;15:1907-17. PubMed
- Mayer AD, Rosenblatt JS. Peripheral olfactory deafferentation of the primary olfactory system in rats using ZnSO4 nasal spray with special reference to maternal behavior. Physiol Behav 1993;53:587-92. PubMed
- DeCook CA, Hirsch AR. Anosmia due to inhalational zinc: a case report (abstract). Chem Senses 2000;25:659.
- Tisdall FF, Brown A, Defries RD. Persistent anosmia following zinc sulfate nasal spraying. JPed 1938;18:60-2. DOI
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- Public Health Advisory. Loss of sense of smell with intranasal cold remedies containing zinc. U.S. Food and Drug Administration, June 16, 2009. Available at: http://www.fda.gov/Drugs/DrugSafety/PublicHealthAdvisories/ucm166059.htm (Accessed 16 June 2009)
- Dooren JC. FDA warns against use of Zicam. The Wall Street Journal, June 16, 2009. Available at: http://online.wsj.com/article/SB124516778692319231.html#mod=djemHL?mg=com-wsj (Accessed 16 June 2009).
- Alexander TH, Davidson TM. Intranasal zinc and anosmia: the zinc-induced anosmia syndrome. Laryngoscope 2006;116:217-20.
- Health Canada / GlaxoSmithKline Consumer Healthcare. Association of long-term, excessive use of zinc-containing Poli-Grip products with myeloneuropathy and blood dyscrasias. February 18, 2010. Available at: http://hc-sc.gc.ca/dhp-mps/alt_formats/pdf/medef
- GlaxoSmithKline Consumer Advisory. GlaxoSmithKline (GSK) warns about a potential health risk associated with long-term, excessive use of GSK's zinc-containing denture adhesives Super Polygrip Original, Ultra Fresh and Extra Care. February 18, 2010. Availa
- Science M, Johnstone J, Roth DE, et al. Zinc for the treatment of the common cold: a systematic review and meta-analysis of randomized controlled trials. CMAJ 2012;184:E551-61. PubMed
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- Dreno, B., Moyse, D., Alirezai, M., Amblard, P., Auffret, N., Beylot, C., Bodokh, I., Chivot, M., Daniel, F., Humbert, P., Meynadier, J., and Poli, F. Multicenter randomized comparative double-blind controlled clinical trial of the safety and efficacy of
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- Jafek, B. W., Linschoten, M. R., and Murrow, B. W. Anosmia after intranasal zinc gluconate use. Am J Rhinol. 2004;18(3):137-141. DOI
- Simonart, T. and de, Maertelaer, V. Systemic treatments for cutaneous warts: a systematic review. J Dermatolog.Treat. 2012;23(1):72-77. PubMed
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- Lang, C. J., Rabas-Kolominsky, P., Engelhardt, A., Kobras, G., and Konig, H. J. Fatal deterioration of Wilson's disease after institution of oral zinc therapy. Arch Neurol. 1993;50(10):1007-1008. PubMed
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- DeCook, C. A. and Hirsch, A. R. Anosmia due to inhalational zinc: a case report (abstract). Chem Senses 2000;25:659.
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- Dadamio J, Van Tournout M, Teughels W, Dekeyser C, Coucke W, Quirynen M. Efficacy of different mouthrinse formulations in reducing oral malodour: a randomized clinical trial. J Clin Periodontol. 2013 May;40(5):505-13. PubMed
- Moyle G, Else L, Jackson A, Back D, Yapa MH, Seymour N, Ringner-Nackter L, Karolia Z, Gazzard B, Boffito M. Coadministration of atazanavir-ritonavir and zinc sulfate: impact on hyperbilirubinemia and pharmacokinetics. Antimicrob Agents Chemother. 2013 Aug PubMed
- Zittel S, Ufer F, Gerloff C, Münchau A, Rosenkranz M. Severe myelopathy after denture cream use--is copper deficiency or excess zinc the cause? Clin Neurol Neurosurg. 2014 Jun;121:17-8. PubMed
- Jalloh MA, Gregory PJ, Hein D, et al. Dietary supplement interactions with antiretrovirals: a systematic review. Int J STD AIDS. 2017 Jan;28(1):4-15. PubMed
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- Ding Y, Jia YY, Li F, et al. The effect of staggered administration of zinc sulfate on the pharmacokinetics of oral cephalexin. Br J Clin Pharmacol. 2012 Mar;73(3):422-7. PubMed
- Fallah R, Sabbaghzadegan S, Karbasi SA, Binesh F. Efficacy of zinc sulfate supplement on febrile seizure recurrence prevention in children with normal serum zinc level: A randomised clinical trial. Nutrition. 2015;31(11-12):1358-61. PubMed
- Lazzerini M, Wanzira H. Oral zinc for treating diarrhoea in children. Cochrane Database Syst Rev. 2016;12:CD005436. PubMed
- Mahmoud AM, Al-Alem U, Dabbous F, et al. Zinc intake and risk of prostate cancer: Case-control study and meta-analysis. PLoS One. 2016;11(11):e0165956. PubMed
- Nagraj SK, George RP, Shetty N, Levenson D, Ferraiolo DM, Shrestha A. Interventions for managing taste disturbances. Cochrane Database Syst Rev. 2017 Dec 20;12(12):CD010470. PubMed
- Yee BE, Richards P, Sui JY, Marsch AF. Serum zinc levels and efficacy of zinc treatment in acne vulgaris: A systematic review and meta-analysis. Dermatol Ther. 2020:e14252. PubMed
- Janyajirawong R, Vilaichone RK, Sethasine S. Efficacy of zinc supplement in minimal hepatic encephalopathy: A prospective, randomized controlled study (Zinc-MHE Trial). Asian Pac J Cancer Prev 2021;22(9):2879-2887. PubMed
- Nakano M, Nakamura Y, Miyazaki A, Takahashi J. Zinc pharmacotherapy for elderly osteoporotic patients with zinc deficiency in a clinical setting. Nutrients 2021;13(6):1814. PubMed
- Tolino E, Skroza N, Mambrin A, et al. An open-label study comparing oral zinc to lymecycline in the treatment of acne vulgaris. J Clin Aesthet Dermatol 2021;14(5):56-58.
- Hunter J, Arentz S, Goldenberg J, et al. Zinc for the prevention or treatment of acute viral respiratory tract infections in adults: a rapid systematic review and meta-analysis of randomised controlled trials. BMJ Open. 2021;11(11):e047474. PubMed
- Yamazaki K, Kageyama H, Fujiyama T, Ito T, Urano S, Honda T. A case of systemic contact dermatitis due to zinc supplements. Int J Dermatol 2022. PubMed
- Magham K, Han J, Eilbert W, Bunney EB. Severe copper deficiency anemia caused by zinc supplement use. Am J Emerg Med 2023;72:222. PubMed
- Sivakumar RR, Chinnaiah Govindareddy D, Sahoo J, Bobby Z, Chinnakali P. Effect of daily zinc supplementation for 12 weeks on serum thyroid auto-antibody levels in children and adolescents with autoimmune thyroiditis - a randomized controlled trial. J Pedi PubMed
- AlDhasee O, AlMalki H, AlKharashi N, AlJeraisy N, Al Deeb M. Acute zinc sulfate overdose: clinical presentation and management. BMJ Case Rep 2025;18(1):e263899. PubMed
- US Food and Drug Administration (FDA). Biktarvy Prescribing Information. October 2024. Available at: https://www.accessdata.fda.gov/drugsatfda_docs/label/2024/210251Orig1s020lbl.pdf. Accessed July 16, 2025.
Cassia Cinnamon 20 references
- 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
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