NAC Ingredients & Drug Interactions
What is this page for?
First and foremost: checking NAC 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
NAC is a dietary supplement by Integrative Therapeutics with 1 active ingredient. Its ingredients are commonly taken for thinning mucus in lung conditions, acetaminophen (tylenol) overdose treatment, antioxidant and glutathione support.Based on those ingredients, 294 medications have a known interaction with it, the most serious rated major. The ingredients most likely to interact are N-Acetyl-L-Cysteine. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.
Check Your Meds Against NAC by Integrative Therapeutics
Ask about any prescription or over-the-counter medication and we check it for interactions with NAC by Integrative Therapeutics — 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 NAC by Integrative Therapeutics
Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.
What’s inside
Full disclosure
This product contains one active ingredient: N-acetyl-L-cysteine (NAC), an amino acid that works as an antioxidant and helps support healthy mucus clearance in the lungs and respiratory tract. NAC comes in a capsule with inactive ingredients—gelatin, cellulose, and calcium laurate—that serve as the capsule shell and binder.
Does it work?
Strong evidence
NAC is effective for acetaminophen (Tylenol) poisoning, a specific medical use. It's also effective for atelectasis (collapsed lung tissue), bronchial diagnostic studies, and tracheostomy care.
For bronchitis, the evidence suggests it's possibly effective but the data isn't conclusive. The evidence we hold does not establish effectiveness for general respiratory health or detox claims outside these specific uses.
How safe is it?
Well-documented data
NAC is generally well tolerated at typical doses. The most common side effects when taken by mouth are diarrhea, dry mouth, nausea, vomiting, indigestion, and loss of appetite—usually mild and tied to doses above what's normally recommended.
Joint pain has been reported in a small number of trial participants. Because supplement use during pregnancy hasn't been well studied, talk with your doctor or pharmacist before taking NAC if you're pregnant.
There isn't enough safety information for breastfeeding, so discuss it with your healthcare provider if you're nursing.
Meds to double-check
Major interaction found
Before taking NAC, double-check with your doctor or pharmacist if you take nitroglycerin—especially intravenous or patch forms—since the combination risks serious low blood pressure. Also confirm your blood pressure medications, blood thinners, antiplatelet drugs, chloroquine (malaria treatment), or activated charcoal before adding this supplement.
The bottom line
Scorecard at a glanceFully disclosed formula with strong clinical evidence behind its ingredients' uses. Major medication interactions have been identified, and safety information is well characterized.
NAC is a legitimate choice if you need it for acetaminophen poisoning, certain lung conditions, or bronchitis—but it's not a general wellness supplement. If you take blood pressure medications, blood thinners, nitroglycerin, or chloroquine, check with your doctor or pharmacist before starting it.
Start the conversation with them about whether NAC fits your situation.
Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI
Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Mar 25, 2021.
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 NAC, straight from the product label.
| Brand | Integrative Therapeutics |
|---|---|
| Barcode (UPC) | 871791001749 |
| Net contents | 60 Capsule(s) |
| Market status | On market |
| Date entered into DSLD | Mar 25, 2021 |
| DSLD ID | 246461 |
| Product type | Non-nutrient/non-botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | 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 NAC by Integrative Therapeutics, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| N-Acetyl-L-Cysteine | 600 mg | -- |
Other ingredients: Gelatin, Cellulose, Calcium Laurate
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
For more information, please visit integrativepro.com.
Precautions
Keep out of reach of children.
Safety sealed with inner seal. Do not use if seal is broken or missing.
If you are pregnant, nursing, or taking prescription drugs, consult your healthcare professional prior to use.
This product is a sulphur-containing compound and may emit an odor.
Storage
Keep tightly closed. Store at room temperature. Avoid excessive heat and direct sunlight.
Formulation
Contains no wheat, gluten, corn, soy, dairy products, or artificial colors, flavors, or preservatives.
Seals/Symbols
Quality Global Sourcing Bottled & Tested In The USA
Brand IP Statement(s)
Copyright 2021 Integrative Therapeutics, LLC
FDA Disclaimer Statement
This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Formula
N-Acetyl L-Cysteine
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Recommendation: Take 1 capsule once or twice daily, or as recommended by your healthcare professional.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
NAC by Integrative Therapeutics 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 NAC by Integrative Therapeutics
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size1 Capsule(s) Dosage formCapsule Servings per container60 Amounts shown are per serving.
N-Acetyl-L-Cysteine
Interacts with294 drugs
N-acetyl cysteine (NAC) is a supplement form of the amino acid cysteine and a building block for the antioxidant glutathione. It has well-established...
N-Acetyl-L-Cysteine monograph & interactionsOther (inactive) ingredients: Gelatin, Cellulose, Calcium Laurate. These complete the product’s ingredient list but are not active constituents.
NAC by Integrative Therapeutics Drug Interactions
HelloPharmacist Interaction Report
NAC by Integrative Therapeutics does interact with several medication types.
The most serious concern is with nitroglycerin (used for chest pain) — combining NAC with intravenous or transdermal nitroglycerin carries a Major risk of severe low blood pressure and severe headaches.
Read the full breakdown — every affected drug type, severity by severity
Moderate interactions exist with blood pressure medications (antihypertensives), where NAC may increase the risk of blood pressure dropping too far. Blood thinners and antiplatelet drugs also pose a Moderate risk — NAC may increase bleeding because it affects how blood clots.
Two other Moderate concerns are chloroquine (an antimalarial), where NAC might reduce its effectiveness, and activated charcoal, where the two can interfere with each other's absorption.
Altogether, these interactions span 294 individual medications. Use the medication checker below to look up your exact prescriptions before starting NAC.
Check your own medications below · Editorial policy · How we use AI
Want to check YOUR meds against NAC?
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 NAC interact with 294 drugs. Click any drug to see the details.
1 of the 1 ingredient in NAC interact with drugs. Each result below shows which ingredient is responsible. N-Acetyl-L-Cysteine
CarvedilolCoreg, Coreg CR
How Carvedilol interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Carvedilol interactionCeliprololCelicard
How Celiprolol interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Celiprolol interactionCharcoal (otc Drug)Charcocaps
How Charcoal (otc Drug) interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineActivated Charcoal Moderate
Interaction Summary
N-acetyl cysteine might reduce the effects of activated charcoal, while activated charcoal might reduce the absorption of N-acetyl cysteine.
Read the full N-acetyl-l-cysteine + Charcoal (otc Drug) interactionCharcoal (prescription Drug)Actidose-Aqua Advance, Carbomix, Charcodote
How Charcoal (prescription Drug) interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineActivated Charcoal Moderate
Interaction Summary
N-acetyl cysteine might reduce the effects of activated charcoal, while activated charcoal might reduce the absorption of N-acetyl cysteine.
Read the full N-acetyl-l-cysteine + Charcoal (prescription Drug) interactionChloroquineAralen HCL, Aralen Phosphate, Aralen Phosphate Injection, Avloclor, Malarivon, Nivaquine
How Chloroquine interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineChloroquine (aralen) Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might interfere with the antimalarial effects of chloroquine.
Read the full N-acetyl-l-cysteine + Chloroquine interactionChloroquine, Primaquine PhosphateAralen / Primaquine
How Chloroquine, Primaquine Phosphate interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineChloroquine (aralen) Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might interfere with the antimalarial effects of chloroquine.
Read the full N-acetyl-l-cysteine + Chloroquine, Primaquine Phosphate interactionChlorothiazideDiuril
How Chlorothiazide interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Chlorothiazide interactionChlorothiazide, MethyldopaAldochlor, Aldoclor 150, Aldoclor 250
How Chlorothiazide, Methyldopa interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Chlorothiazide, Methyldopa interactionChlorothiazide, ReserpineDiupres
How Chlorothiazide, Reserpine interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Chlorothiazide, Reserpine interactionChlorthalidoneHygroton, Thalitone
How Chlorthalidone interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Chlorthalidone interactionChlorthalidone, ClonidineClorpres, Combipres
How Chlorthalidone, Clonidine interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Chlorthalidone, Clonidine interactionCilazaprilInhibace
How Cilazapril interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Cilazapril interactionCilostazolPletal
How Cilostazol interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Cilostazol interactionClevidipineCleviprex
How Clevidipine interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Clevidipine interactionClonidineCatapres
How Clonidine interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Clonidine interactionClopidogrelPlavix
How Clopidogrel interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Clopidogrel interactionCryptenamine, MethyclothiazideDiutensen
How Cryptenamine, Methyclothiazide interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Cryptenamine, Methyclothiazide interactionCyclothiazideAnhydron, Fluidil
How Cyclothiazide interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Cyclothiazide interactionDalteparinFragmin
How Dalteparin interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Dalteparin interactionDanaparoidOrgaran
How Danaparoid interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Danaparoid interactionDefibrotide SodiumDefitelio
How Defibrotide Sodium interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Defibrotide Sodium interactionDeserpidineHarmonyl
How Deserpidine interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Deserpidine interactionDeserpidine, HydrochlorothiazideOreticyl, Oreticyl Forte
How Deserpidine, Hydrochlorothiazide interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Deserpidine, Hydrochlorothiazide interactionDeserpidine, MethyclothiazideEnduronyl, Enduronyl Forte
How Deserpidine, Methyclothiazide interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAntihypertensive Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Read the full N-acetyl-l-cysteine + Deserpidine, Methyclothiazide interactionDiclofenacZorvolex
How Diclofenac interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Diclofenac interactionDiclofenac PotassiumCambia, Cataflam, Cataflam IR, Voltaren Rapide, Voltarol Rapid
How Diclofenac Potassium interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Diclofenac Potassium interactionDiclofenac SodiumAcoflam, Acoflam 75 SR, Acoflam Retard, Defenac, Defenac Retard, Defenac SR +40 more
How Diclofenac Sodium interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Diclofenac Sodium interactionDiclofenac Sodium, MisoprostolArthrotec 50, Arthrotec 75
How Diclofenac Sodium, Misoprostol interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Diclofenac Sodium, Misoprostol interactionDiclofenac EpolamineFlector, Licart
How Diclofenac Epolamine interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Diclofenac Epolamine interactionDicumarolDicumarol
How Dicumarol interacts with NAC — through 1 ingredient. Tap an ingredient for the detail:
N-acetyl-l-cysteineAnticoagulant/antiplatelet Drugs Moderate
Interaction Summary
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Read the full N-acetyl-l-cysteine + Dicumarol interactionEach ingredient & the kinds of drugs it affects
For each ingredient in NAC with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.
N-Acetyl-L-Cysteine
Nitroglycerin
N-acetyl cysteine can increase the risk for hypotension and headaches when taken with intravenous or transdermal nitroglycerin.
Clinical research shows that concomitant administration of N-acetyl cysteine and intravenous or transdermal nitroglycerin can cause severe hypotension and intolerable headaches. Furthermore, in vitro research suggests that N-acetyl cysteine increases the anticoagulant activity of nitroglycerin.
Activated Charcoal
N-acetyl cysteine might reduce the effects of activated charcoal, while activated charcoal might reduce the absorption of N-acetyl cysteine.
N-acetyl cysteine appears to reduce the capacity of activated charcoal to adsorb acetaminophen and salicylic acid. Conversely, although clinical research suggests that although activated charcoal can reduce the absorption of N-acetyl cysteine by up to 40%, it does not seem to reduce its clinical effects. Other clinical evidence suggests that activated charcoal does not affect the absorption of N-acetyl cysteine.
Anticoagulant/Antiplatelet Drugs
Theoretically, N-acetyl cysteine might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Clinical research suggests that intravenous N-acetyl cysteine decreases prothrombin time, prolongs coagulation time, decreases platelet aggregation, and increases blood loss in surgical patients. Furthermore, in vitro research suggests that N-acetyl cysteine increases the anticoagulant activity of nitroglycerin.
Antihypertensive Drugs
Theoretically, N-acetyl cysteine might increase the risk of hypotension when taken with antihypertensive drugs.
Animal research suggests that N-acetyl cysteine potentiates the hypotensive effects of the angiotensin-converting enzyme inhibitors (ACEIs) captopril and enalaprilat. Theoretically, combining N-acetyl cysteine with other antihypertensive drugs might increase the risk of hypotension.
Chloroquine (Aralen)
Theoretically, N-acetyl cysteine might interfere with the antimalarial effects of chloroquine.
Animal research suggests that N-acetyl cysteine might reduce the antimalarial effects of chloroquine by increasing cellular levels of glutathione.
Brand information
Manufacturer and brand details for NAC, from the product label.
Integrative Therapeutics
See all Integrative Therapeutics products- Name
- Integrative Therapeutics, LLC
- City
- Green Bay
- State
- WI
- ZipCode
- 54311
- Phone Number
- 800.931.1709
- Web Address
- integrativepro.com
NAC by Integrative Therapeutics: Common Questions
Does NAC by Integrative Therapeutics interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
What is NAC used for?
What are the most common side effects?
Can I take NAC while pregnant?
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Does NAC interact with my blood pressure medication?
Is NAC safe with blood thinners?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if NAC is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.
The Full Monographs Behind NAC’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
NAC'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 86 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.
N-acetyl Cysteine (nac) 86 references
- Ellenhorn MJ, et al. Ellenhorn's Medical Toxicology: Diagnoses and Treatment of Human Poisoning. 2nd ed. Baltimore, MD: Williams & Wilkins, 1997.
- Jepsen S, Hansen AB. The influence of N-acetylcysteine on the measurement of prothrombin time and activated partial thromboplastin time in healthy subjects. Scand J Clin Lab Invest 1994;54:543-7. PubMed
- van Zandwijk N, Dalesio O, Pastorino U, et al. EUROSCAN, a randomized trial of vitamin A and N-acetylcysteine in patients with head and neck cancer or lung cancer. For the European Organization for Research and Treatment of Cancer Head and Neck and Lung C DOI
- Horowitz RS, Dart RC, Jarvie DR, et al. Placental transfer of N-acetylcysteine following human maternal acetaminophen toxicity. J Toxicol Clin Toxicol 1997;35:447-51.
- Bailey B, McGuigan MA. Management of anaphylactoid reactions to intravenous N-acetylcysteine. Ann Emerg Med 1998;31:710-5. PubMed
- Spiller HA, Krenzelok EP, Grande GA, et al. A prospective evaluation of the effect of activated charcoal before oral N-acetylcysteine in acetaminophen overdose. Ann Emerg Med 1994;23:519-23. PubMed
- Ardissino D, Merlini PA, Savonitto S, et al. Effect of transdermal nitroglycerin or N-acetylcysteine, or both, in the long-term treatment of unstable angina pectoris. J Am Coll Cardiol 1997;29:941-7. PubMed
- Horowitz JD, Henry CA, Syrjanen ML, et al. Nitroglycerine/N-acetylcysteine in the management of unstable angina pectoris. Eur Heart J 1988;9:95-100. PubMed
- Louwerse ES, Weverling GJ, Bossuyt PM, et al. Randomized, double-blind, controlled trial of acetylcysteine in amyotrophic lateral sclerosis. Arch Neurol 1995;52:559-64. PubMed
- Wiklund O, Fager G, Andersson A, et al. N-acetylcysteine treatment lowers plasma homocysteine but not serum lipoprotein(a) levels. Atherosclerosis 1996;119:99-106. PubMed
- De Flora S, Grassi C, Carati L. Attenuation of influenza-like symptomatology and improvement of cell-mediated immunity with long-term N-acetylcysteine treatment. Eur Respir J 1997;10:1535-41. PubMed
- Iversen HK. N-acetylcysteine enhances nitroglycerin-induced headache and cranial arterial responses. Clin Pharmacol Ther 1992;52:125-33. PubMed
- Behr J, Maier K, Degenkolb B, et al. Antioxidative and clinical effects of high-dose N-acetylcysteine in fibrosing alveolitis. Adjunctive therapy to maintenance immunosuppression. Am J Respir Crit Care Med 1997;156:1897-901.
- Tenenbein PK, Sitar DS, Tenenbein M. Interaction between N-acetylcysteine and activated charcoal: implications for the treatment of acetaminophen poisoning. Pharmacotherapy 2001;21:1331-6.
- Arstall MA, Yang J, Stafford I, et al. N-acetylcysteine in combination with nitroglycerin and streptokinase for the treatment of evolving acute myocardial infarction. Safety and biochemical effects. Circulation 1995;92:2855-62.
- Estensen RD, Levy M, Klopp SJ, et al. N-acetylcysteine suppression of the proliferative index in the colon of patients with previous adenomatous colonic polyps. Cancer Lett 1999;147:109-14. PubMed
- Pela R, Calcagni AM, Subiaco S, et al. N-acetylcysteine reduces the exacerbation rate in patients with moderate to severe COPD. Respiration 1999;66:495-500.. PubMed
- Oldemeyer JB, Biddle WP, Wurdeman RL, et al. Acetylcysteine in the prevention of contrast-induced nephropathy after coronary angiography. Am Heart J 2003;146:E23. . PubMed
- Ekins BR, Ford DC, Thompson MI, et al. The effect of activated charcoal on N-acetylcysteine absorption in normal subjects. Am J Emerg Med. 1987;5(6):483-7. PubMed
- Chamberlain JM, Gorman RL, Oderda GM, Klein-Schwartz W, Klein BL. Use of activated charcoal in a simulated poisoning with acetaminophen: a new loading dose for N-acetylcysteine? Ann Emerg Med. 1993;22(9):1398-402. PubMed
- Renzi FP, Donovan JW, Martin TG, Morgan L, Harrison EF. Concomitant use of activated charcoal and N-acetylcysteine. Ann Emerg Med. 1985;14(6):568-72. DOI
- North DS, Peterson RG, Krenzelok EP. Effect of activated charcoal administration on acetylcysteine serum levels in humans. Am J Hosp Pharm. 1981;38(7):1022-4. DOI
- Loscalzo J. N-Acetylcysteine potentiates inhibition of platelet aggregation by nitroglycerin. J Clin Invest. 1985;76(2):703-8. PubMed
- Ruiz FJ, Salom MG, Inglés AC, et al. N-acetyl-L-cysteine potentiates depressor response to captopril and enalaprilat in SHRs. Am J Physiol. 1994;267(3 Pt 2):R767-72. PubMed
- Deharo E, Barkan D, Krugliak M, Golenser J, Ginsburg H. Potentiation of the antimalarial action of chloroquine in rodent malaria by drugs known to reduce cellular glutathione levels. Biochem Pharmacol. 2003;66(5):809-17. PubMed
- Buckley, N. A., Whyte, I. M., O'Connell, D. L., and Dawson, A. H. Oral or intravenous N-acetylcysteine: which is the treatment of choice for acetaminophen (paracetamol) poisoning? J Toxicol.Clin Toxicol. 1999;37(6):759-767.
- Sunman, W., Hughes, A. D., and Sever, P. S. Anaphylactoid response to intravenous acetylcysteine. Lancet 5-16-1992;339(8803):1231-1232. PubMed
- Reynard, K., Riley, A., and Walker, B. E. Respiratory arrest after N-acetylcysteine for paracetamol overdose. Lancet 9-12-1992;340(8820):675. PubMed
- BERNSTEIN, I. L. and AUSDENMOORE, R. W. IATROGENIC BRONCHOSPASM OCCURRING DURING CLINICAL TRIALS OF A NEW MUCOLYTIC AGENT, ACETYLCYSTEINE. Dis.Chest 1964;46:469-473. PubMed
- REAS, H. W. THE USE OF N-ACETYLCYSTEINE IN THE TREATMENT OF CYSTIC FIBROSIS. J Pediatr 1964;65:542-557. PubMed
- Bibi, H., Seifert, B., Oullette, M., and Belik, J. Intratracheal N-acetylcysteine use in infants with chronic lung disease. Acta Paediatr. 1992;81(4):335-339. PubMed
- Jepsen, S., Herlevsen, P., Knudsen, P., Bud, M. I., and Klausen, N. O. Antioxidant treatment with N-acetylcysteine during adult respiratory distress syndrome: a prospective, randomized, placebo-controlled study. Crit Care Med 1992;20(7):918-923. PubMed
- Roes, E. M., Raijmakers, M. T., Boo, T. M., Zusterzeel, P. L., Merkus, H. M., Peters, W. H., and Steegers, E. A. Oral N-acetylcysteine administration does not stabilise the process of established severe preeclampsia. Eur.J Obstet.Gynecol.Reprod.Biol 2006
- Spiller, H. A., Winter, M. L., Klein-Schwartz, W., and Bangh, S. A. Efficacy of activated charcoal administered more than four hours after acetaminophen overdose. J Emerg.Med 2006;30(1):1-5. PubMed
- Tirouvanziam, R., Conrad, C. K., Bottiglieri, T., Herzenberg, L. A., Moss, R. B., and Herzenberg, L. A. High-dose oral N-acetylcysteine, a glutathione prodrug, modulates inflammation in cystic fibrosis. Proc Natl.Acad.Sci U.S.A 3-21-2006;103(12):4628-463
- Niemi, T. T., Munsterhjelm, E., Poyhia, R., Hynninen, M. S., and Salmenpera, M. T. The effect of N-acetylcysteine on blood coagulation and platelet function in patients undergoing open repair of abdominal aortic aneurysm. Blood Coagul.Fibrinolysis 2006;1 PubMed
- Komisarof, J. A., Gilkey, G. M., Peters, D. M., Koudelka, C. W., Meyer, M. M., and Smith, S. M. N-acetylcysteine for patients with prolonged hypotension as prophylaxis for acute renal failure (NEPHRON). Crit Care Med 2007;35(2):435-441. PubMed
- Grimble, G. K. Adverse gastrointestinal effects of arginine and related amino acids. J Nutr 2007;137(6 Suppl 2):1693S-1701S. PubMed
- Berk, M., Copolov, D. L., Dean, O., Lu, K., Jeavons, S., Schapkaitz, I., Anderson-Hunt, M., and Bush, A. I. N-acetyl cysteine for depressive symptoms in bipolar disorder--a double-blind randomized placebo-controlled trial. Biol Psychiatry 9-15-2008;64(6) PubMed
- Shahin, A. Y., Hassanin, I. M., Ismail, A. M., Kruessel, J. S., and Hirchenhain, J. Effect of oral N-acetyl cysteine on recurrent preterm labor following treatment for bacterial vaginosis. Int J Gynaecol.Obstet. 2009;104(1):44-48. PubMed
- Nigwekar, S. U. and Kandula, P. N-acetylcysteine in cardiovascular-surgery-associated renal failure: a meta-analysis. Ann Thorac.Surg 2009;87(1):139-147. PubMed
- Sandilands, E. A. and Bateman, D. N. Adverse reactions associated with acetylcysteine. Clin Toxicol.(Phila) 2009;47(2):81-88. PubMed
- Wijeysundera, D. N., Karkouti, K., Rao, V., Granton, J. T., Chan, C. T., Raban, R., Carroll, J., Poonawala, H., and Beattie, W. S. N-acetylcysteine is associated with increased blood loss and blood product utilization during cardiac surgery. Crit Care Me PubMed
- Holdiness, M. R. Clinical pharmacokinetics of N-acetylcysteine. Clin Pharmacokinet. 1991;20(2):123-134. PubMed
- Dawson, A. H., Henry, D. A., and McEwen, J. Adverse reactions to N-acetylcysteine during treatment for paracetamol poisoning. Med J Aust. 3-20-1989;150(6):329-331.
- Rasmussen, J. B. and Glennow, C. Reduction in days of illness after long-term treatment with N-acetylcysteine controlled-release tablets in patients with chronic bronchitis. Eur.Respir.J 1988;1(4):351-355. DOI
- Walters, M. T., Rubin, C. E., Keightley, S. J., Ward, C. D., and Cawley, M. I. A double-blind, cross-over, study of oral N-acetylcysteine in Sjogren's syndrome. Scand J Rheumatol.Suppl 1986;61:253-258.
- Cato, A., Goldstein, I., and Millman, M. A double-blind parallel study of acetylcysteine-isoproterenol and saline-isoproterenol in patients with chronic obstructive lung disease. J Int Med Res 1977;5(3):175-183. PubMed
- Parr, G. D. and Huitson, A. Oral Fabrol (oral N-acetyl-cysteine) in chronic bronchitis. Br.J.Dis.Chest 1987;81(4):341-348.
- Dano, G. Bronchospasm caused by acetylcysteine in children with bronchial asthma. Acta Allergol. 1971;26(3):181-190. DOI
- Howatt, W. F. and DeMuth, G. R. A double-blind study of the use of acetylcysteine in patients with cystic fibrosis. Univ Mich.Med Cent.J 1966;32(2):82-85.
- Millman, M. and Grundon, W. Use of acetylcysteine in bronchial asthma and emphysema. J Asthma Res 1969;6(4):199-209. PubMed
- Vale, J. A. and Wheeler, D. C. Anaphylactoid reaction to acetylcysteine. Lancet 10-30-1982;2(8305):988.
- Mant, T. G., Tempowski, J. H., Volans, G. N., and Talbot, J. C. Adverse reactions to acetylcysteine and effects of overdose. Br Med J (Clin Res Ed) 7-28-1984;289(6439):217-219. PubMed
- Myers, C., Bonow, R., Palmeri, S., Jenkins, J., Corden, B., Locker, G., Doroshow, J., and Epstein, S. A randomized controlled trial assessing the prevention of doxorubicin cardiomyopathy by N-acetylcysteine. Semin.Oncol 1983;10(1 Suppl 1):53-55.
- Miller, L. F. and Rumack, B. H. Clinical safety of high oral doses of acetylcysteine. Semin.Oncol 1983;10(1 Suppl 1):76-85.
- Boman, G., Backer, U., Larsson, S., Melander, B., and Wahlander, L. Oral acetylcysteine reduces exacerbation rate in chronic bronchitis: report of a trial organized by the Swedish Society for Pulmonary Diseases. Eur J Respir.Dis 1983;64(6):405-415.
- Tattersall, A. B., Bridgman, K. M., and Huitson, A. Irish general practice study of acetylcysteine (Fabrol) in chronic bronchitis. J Int Med Res 1984;12(2):96-101. PubMed
- Jackson, I. M., Barnes, J., and Cooksey, P. Efficacy and tolerability of oral acetylcysteine (Fabrol) in chronic bronchitis: a double-blind placebo controlled study. J Int Med Res 1984;12(3):198-206. PubMed
- Ho, S. W. and Beilin, L. J. Asthma associated with N-acetylcysteine infusion and paracetamol poisoning: report of two cases. Br Med J (Clin Res Ed) 9-24-1983;287(6396):876-877. PubMed
- Vale, J. A. and Buckley, B. M. Asthma associated with N-acetylcysteine infusion and paracetamol poisoning. Br Med J (Clin Res Ed) 10-22-1983;287(6400):1223. PubMed
- Bateman, D. N., Woodhouse, K. W., and Rawlins, M. D. Adverse reactions to N-acetylcysteine. Hum Toxicol. 1984;3(5):393-398. PubMed
- Gervais, S., Lussier-Labelle, F., and Beaudet, G. Anaphylactoid reaction to acetylcysteine. Clin Pharm 1984;3(6):586-587.
- Tattersall, A. B., Bridgman, K. M., and Huitson, A. Acetylcysteine (Fabrol) in chronic bronchitis--a study in general practice. J Int Med Res 1983;11(5):279-284. PubMed
- Casola, G. and vanSonnenberg, E. Skin damage from acetylcysteine leak during percutaneous abscess drainage. Radiology 1984;152(1):233. PubMed
- Aylward, M., Maddock, J., and Dewland, P. Clinical evaluation of acetylcysteine in the treatment of patients with chronic obstructive bronchitis: a balanced double-blind trial with placebo control. Eur.J Respir.Dis.Suppl 1980;111:81-89.
- Long-term oral acetylcysteine in chronic bronchitis. a double-blind controlled study. Eur.J Respir.Dis.Suppl 1980;111:93-108.
- Chan, T. Y. and Critchley, J. A. Adverse reactions to intravenous N-acetylcysteine in Chinese patients with paracetamol (acetaminophen) poisoning. Hum Exp.Toxicol. 1994;13(8):542-544. PubMed
- Hansen, N. C., Skriver, A., Brorsen-Riis, L., Balslov, S., Evald, T., Maltbaek, N., Gunnersen, G., Garsdal, P., Sander, P., Pedersen, J. Z., and . Orally administered N-acetylcysteine may improve general well-being in patients with mild chronic bronchiti
- Reid, M. B., Stokic, D. S., Koch, S. M., Khawli, F. A., and Leis, A. A. N-acetylcysteine inhibits muscle fatigue in humans. J Clin Invest 1994;94(6):2468-2474. PubMed
- Chirkov, Y. Y. and Horowitz, J. D. N-Acetylcysteine potentiates nitroglycerin-induced reversal of platelet aggregation. J Cardiovasc.Pharmacol 1996;28(3):375-380. PubMed
- Hershkovitz, E., Shorer, Z., Levitas, A., and Tal, A. Status epilepticus following intravenous N-acetylcysteine therapy. Isr.J Med Sci 1996;32(11):1102-1104.
- Stavem, K. [Anaphylactic reaction to N-acetylcysteine after poisoning with paracetamol]. Tidsskr.Nor Laegeforen. 5-30-1997;117(14):2038-2039.
- Walton, N. G., Mann, T. A., and Shaw, K. M. Anaphylactoid reaction to N-acetylcysteine. Lancet 12-15-1979;2(8155):1298. PubMed
- Perry, H. E. and Shannon, M. W. Efficacy of oral versus intravenous N-acetylcysteine in acetaminophen overdose: results of an open-label, clinical trial. J Pediatr 1998;132(1):149-152. PubMed
- Kory, R. C., Hirsch, S. R., and Giraldo, J. Nebulization of N-acetylcysteine combined with a bronchodilator in patients with chronic bronchitis. A controlled study. Chest 1968;54(6):504-509. PubMed
- Nahir, A. M., Scharf, J. M., and Szargel, R. Effects of oral N-acetylcysteine on both ocular and oral manifestations of Sjogren's Syndrome. Curr Ther Res 1989;46:187-192.
- Charley, G., Dean, B. S., and Krenzelok, E. P. Oral N-acetylcysteine-induced urticaria: a case report. Vet.Hum Toxicol. 1987;29:477.
- Jenkins DD, Wiest DB, Mulvihill DM, et al. Fetal and neonatal effects of N-acetylcysteine when used for neuroprotection in maternal chorioamnionitis. J Pediatr. 2016 Jan;168:67-76.e6. PubMed
- Costa DLC, Diniz JB, Requena G, et al. Randomized double-blind, placebo-controlled trial of N-acetylcysteine augmentation for treatment-resistant obsessive-compulsive disorder. J Clin Psychiatry. 2017 Jul;78(7):e799-e773.
- Kranzer K, Elamin WF, Cox H, Seddon JA, Ford N, Drobniewski F. A systematic review and meta-analysis of the efficacy and safety of N-acetylcysteine in preventing aminoglycoside-induced ototoxicity: implications for the treatment of multidrug-resistant TB.
- Wang W, Zhang Y, Liu Y, Xu L, Shi D. Severe chest pain due to N-acetylcysteine-induced esophagitis. Case Rep Med. 2019;2019:8057259.
- Li F, Welling MC, Johnson JA, et al. N-acetylcysteine for pediatric obsessive-compulsive disorder: A small pilot study. J Child Adolesc Psychopharmacol. 2020;30(1):32-37. PubMed
- Monti DA, Zabrecky G, Leist TP, et al. N-acetyl cysteine administration is associated with increased cerebral glucose metabolism in patients with multiple sclerosis: An exploratory study. Front Neurol. 2020;11:88. PubMed
- Gray KM, Carpenter MJ, Baker NL, et al. A double-blind randomized controlled trial of N-acetylcysteine in cannabis-dependent adolescents. Am J Psychiatry. 2012;169(8):805-12.
- Sarris J, Byrne G, Castle D, et al. N-acetyl cysteine (NAC) augmentation in the treatment of obsessive-compulsive disorder: A phase III, 20-week, double-blind, randomized, placebo-controlled trial. Prog Neuropsychopharmacol Biol Psychiatry 2022;117:110550 PubMed
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