N-Acetylcysteine para Acute Bronchitis

Q: Does N-Acetylcysteine help with Acute Bronchitis?

Based on 10 studies with 1,500 participants, there is moderate evidence from clinical studies that N-Acetylcysteine may support Acute Bronchitis management. Our evidence grade is B (Good Evidence).

Q: How much N-Acetylcysteine should I take for Acute Bronchitis?

Studies have used various dosages. A commonly studied range is 600-1,200 mg/day. Always consult your healthcare provider before starting any supplement regimen.

Q: Are there side effects of N-Acetylcysteine?

Reported side effects may include Gastrointestinal discomfort (nausea, diarrhea), Unpleasant sulfur taste/smell, Headache, Rare: bronchospasm (in asthma patients, inhaled form). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

Q: How strong is the evidence for N-Acetylcysteine and Acute Bronchitis?

We rate the evidence as Grade B (Good Evidence). This rating is based on 10 peer-reviewed studies with 1,500 total participants. The overall direction of effect is positive.

Meta-analyses associate NAC supplementation with lower inflammatory markers and improved oxygenation in respiratory patients. Its well-established mucolytic properties support airway clearance in acute bronchitis. NAC is an FDA-approved mucolytic agent with a long safety record.

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Conclusión

Key Study Findings

Review

N-acetylcysteine in paediatrics: a review of efficacy, safety and dosing strategies in respiratory care.

Dose: 20 mg/kg/day acute; 200 mg TID chronic vs: None Outcome: Efficacy in pediatric respiratory diseases Efecto: None None

Población: Children with acute/chronic respiratory diseases

Other n=270 8 weeks

N-acetyl-L-cysteine and lauric acid; effective antioxidant and antimicrobial feed additives for juvenile Pacific white shrimp …

Dose: 0.2% supplementation vs: Control diet at LSD and HSD Outcome: Growth, immune and antioxidant response in shrimp Efecto: None None

Población: Pacific white shrimp (L. vannamei) at high stocking density

In Vitro

Improving in vitro induction efficiency of human primordial germ cell-like cells using N2B27 or NAC-based …

Dose: None vs: GK15 induction without NAC Outcome: hPGCLC induction efficiency Efecto: None None

Población: Human iPSCs (in vitro)

Review

Cautious Hope for Cannabidiol (CBD) in Rheumatology Care.

Dose: Cannabidiol (CBD) vs: None Outcome: Pain and inflammation in rheumatic diseases Efecto: None None

Población: Patients with rheumatic diseases

Randomized Controlled Trial n=333 1.0 weeks Double-blind

Intravenous N-acetylcysteine in respiratory disease with abnormal mucus secretion.

Dose: 600 mg vs: placebo and ambroxol Outcome: Sputum viscosity and expectoration difficulty Efecto: None p<0.001

Población: Patients with respiratory disease and abnormal mucus

animal study (controlled experiment) n=120 3 weeks

Effects of N-acetyl-l-cysteine on chronic heat stress-induced oxidative stress and inflammation in the ovaries of …

Dose: 1 g/kg NAC in basal diet vs: Placebo Efecto: None None

Key Statistics

Estudios

1500

Participantes

↑

Positive

Calificación

Referenced Papers

N-acetyl-L-cysteine and lauric acid; effective antioxidant and antimicrobial feed additives for juvenile Pacific white shrimp (Litopenaeus vannamei) cultured at high … Other

PloS one 2025 5 citas

N-acetylcysteine in paediatrics: a review of efficacy, safety and dosing strategies in respiratory care. Review

Drugs in context 2025 1 citas

Improving in vitro induction efficiency of human primordial germ cell-like cells using N2B27 or NAC-based medium. Other

Journal of biomedical … 2025

Cautious Hope for Cannabidiol (CBD) in Rheumatology Care. Review

Arthritis care & … 2023 36 citas

Effects of N-acetyl-l-cysteine on chronic heat stress-induced oxidative stress and inflammation in the ovaries of growing pullets. Other

Poultry science 2023 13 citas

Intravenous N-acetylcysteine in respiratory disease with abnormal mucus secretion. RCT

European review for … 2023 2 citas

Correlates of high phosphatidylethanol (PEth) levels and their concordance with self-reported heavy alcohol consumption among men who have sex with … RCT

Alcoholism, clinical and … 2022 4 citas

Effects of N-acetyl-l-cysteine on heat stress-induced oxidative stress and inflammation in the hypothalamus of hens. RCT

Journal of thermal … 2021 24 citas

N-acetyl-l-cysteine attenuates oxidative damage and neurodegeneration in rat brain during aging. Other

Canadian journal of … 2018 37 citas

Simultaneous quantification of Echinacea species, Flos Lonicerae, Radix Scutellaria and Fructus Forsythiae combinations by rapid resolution liquid chromatography. Other

Natural product communications 2011 7 citas

Pelargonium sidoides for acute bronchitis: a systematic review and meta-analysis. Meta-Analysis

Phytomedicine : international … 2008 100 citas

Oxidative stress in aldosteronism. Review

Cardiovascular research 2006 42 citas

Respiratory and allergic diseases: from upper respiratory tract infections to asthma. Review

Primary care 2002 56 citas

[Mucolytics in acute and chronic respiratory tract disorders. II. Uses for treatment and antioxidant properties]. Review

Polski merkuriusz lekarski … 2002 16 citas

The pattern of micro-organisms and the efficacy of new macrolide in acute lower respiratory tract infections. RCT

Respirology (Carlton, Vic.) 1998 14 citas

[Therapy of respiratory tract diseases with N-acetylcysteine. An open therapeutic observation study of 2,512 patients]. Other

Fortschritte der Medizin 1992

[Therapy of bronchitis. Successful single-dosage treatment with N-acetylcysteine, results of an administration surveillance study in 3,076 patients]. Other

Fortschritte der Medizin 1991

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Dosificaciones de uso común

general:: 600-1,200 mg/day
respiratorysupport:: 600 mg 2-3x/day

Límite superior: No established UL; doses up to 1,800 mg/day widely studied

Dosificaciones estudiadas en la investigación

Dosificación	Duración	Efecto	N
20 mg/kg/day acute; 200 mg TID chronic	--	Positive	--
0.2% supplementation	8 weeks	Positive	270
None	--	Positive	--
Cannabidiol (CBD)	--	Mixed	--
600 mg	1.0 weeks	Mixed	333
1 g/kg NAC in basal diet	3 weeks	Positive	120
None	--	Mixed	--
1000 mg/kg in basal diet	3 weeks	Positive	120

Mejor momento para tomar: Between meals on empty stomach for optimal absorption

Safety & Side Effects

Efectos secundarios reportados

⚠ Gastrointestinal discomfort (nausea, diarrhea)
⚠ Unpleasant sulfur taste/smell
⚠ Headache
⚠ Rare: bronchospasm (in asthma patients, inhaled form)

Interacciones conocidas

● Nitroglycerin (may enhance vasodilatory and headache effects)
● Activated charcoal (reduces NAC absorption)
● Anticoagulants (theoretical effect on platelet function)

Ingesta máxima tolerable: No established UL; doses up to 1,800 mg/day widely studied

Consulte siempre a su profesional de salud antes de comenzar cualquier suplemento.Siempre consulte a su profesional de salud antes de comenzar cualquier suplemento.

Frequently Asked Questions

Does N-Acetylcysteine help with Acute Bronchitis?

Based on 10 studies with 1,500 participants, there is moderate evidence from clinical studies that N-Acetylcysteine may support Acute Bronchitis management. Our evidence grade is B (Good Evidence).

How much N-Acetylcysteine should I take for Acute Bronchitis?

Studies have used various dosages. A commonly studied range is 600-1,200 mg/day. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of N-Acetylcysteine?

Reported side effects may include Gastrointestinal discomfort (nausea, diarrhea), Unpleasant sulfur taste/smell, Headache, Rare: bronchospasm (in asthma patients, inhaled form). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for N-Acetylcysteine and Acute Bronchitis?

We rate the evidence as Grade B (Good Evidence). This rating is based on 10 peer-reviewed studies with 1,500 total participants. The overall direction of effect is positive.

Related Evidence

Otros ingredientes para Acute Bronchitis

Pelargonium sidoides A

N-Acetylcysteine para otras condiciones

Post-Viral Fatigue C

Veredicto rápido

Evidence Strength72%

High confidence

Desglose de estudios

RCT (4)Meta (1)Other (5)

Comparar alternativas

Vea cómo se comparan otros ingredientes para esta condición.

Ver todos los ingredientes para Acute Bronchitis

Más información

Aviso legal FDA: Estas declaraciones no han sido evaluadas por la Food and Drug Administration. Los productos y la información en este sitio web no están destinados a diagnosticar, tratar, curar ni prevenir ninguna enfermedad. Las calificaciones de evidencia presentadas se basan en nuestro análisis de investigación publicada revisada por pares y no constituyen consejo médico. Siempre consulte a su profesional de salud antes de comenzar cualquier régimen de suplementos.