N-Acetylcysteine pour Post-Viral Fatigue

Ongoing clinical trials are investigating NAC for long COVID and post-viral fatigue. NAC supplementation is associated with lower inflammation markers and may support glutathione replenishment in individuals with persistent oxidative stress following viral infection.

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Key Study Findings

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 Effet: None None

Population: 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 Effet: None None

Population: 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 Effet: None None

Population: Patients with rheumatic diseases

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 Effet: None None

Randomized Controlled Trial

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

Dose: None vs: None Outcome: Phosphatidylethanol (PEth) levels Effet: None None

Population: None

randomized controlled trial (veterinary) n=120 3 weeks

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

Dose: 1000 mg/kg in basal diet vs: Placebo Effet: None None

Key Statistics

Études

400

Participants

↑

Positive

Note

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 citations

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 citations

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 citations

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 citations

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 citations

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

Canadian journal of … 2018 37 citations

Nitrosative Stress, Hypernitrosylation, and Autoimmune Responses to Nitrosylated Proteins: New Pathways in Neuroprogressive Disorders Including Depression and Chronic Fatigue Syndrome. Review

Molecular neurobiology 2017 90 citations

The glutathione system: a new drug target in neuroimmune disorders. Review

Molecular neurobiology 2014 190 citations

Oxidative stress in aldosteronism. Review

Cardiovascular research 2006 42 citations

Chronic fatigue syndrome: oxidative stress and dietary modifications. Review

Alternative medicine review … 2001

Dosage & Usage

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

Posologies couramment utilisées

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

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

Posologies étudiées dans la recherche

Posologie	Durée	Effet	N
0.2% supplementation	8 weeks	Positive	270
None	--	Positive	--
Cannabidiol (CBD)	--	Mixed	--
1 g/kg NAC in basal diet	3 weeks	Positive	120
None	--	Mixed	--
1000 mg/kg in basal diet	3 weeks	Positive	120
NAC 100 mg/kg body weight orally daily for 14 days	2 weeks	Positive	24
None	--	Mixed	--

Moment optimal de prise : Between meals on empty stomach for optimal absorption

Safety & Side Effects

Effets indésirables signalés

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

Interactions connues

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

Apport maximal tolérable : No established UL; doses up to 1,800 mg/day widely studied

Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.

Frequently Asked Questions

Does N-Acetylcysteine help with Post-Viral Fatigue?

Based on 5 studies with 400 participants, there is limited but promising evidence that N-Acetylcysteine may support Post-Viral Fatigue management. Our evidence grade is C (Some Evidence).

How much N-Acetylcysteine should I take for Post-Viral Fatigue?

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 Post-Viral Fatigue?

We rate the evidence as Grade C (Some Evidence). This rating is based on 5 peer-reviewed studies with 400 total participants. The overall direction of effect is positive.

Related Evidence

Autres ingrédients pour Post-Viral Fatigue

Glutathione D

N-Acetylcysteine pour d'autres pathologies

Acute Bronchitis B

Verdict rapide

Evidence Strength52%

Moderate confidence

Synthèse des études

RCT (2)Meta (0)Other (3)

Comparer les alternatives

Découvrez comment d'autres ingrédients se comparent pour cette condition.Découvrez comment d'autres ingrédients se comparent pour cette pathologie.

Voir tous les ingrédients pour Post-Viral Fatigue

En savoir plus

Avertissement FDA: Ces déclarations n'ont pas été évaluées par la Food and Drug Administration. Les produits et informations sur ce site ne sont pas destinés à diagnostiquer, traiter, guérir ou prévenir quelque maladie que ce soit. Les notes de preuve présentées sont basées sur notre analyse de la recherche publiée et évaluée par des pairs et ne constituent pas un avis médical. Consultez toujours votre professionnel de santé avant de commencer tout régime de compléments alimentaires.