Evidence supporting the use of: N-acetyl-cysteine (NAC)
For the health condition: Anxiety

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

N-acetyl-cysteine (NAC) has garnered some scientific interest as a potential adjunctive treatment for anxiety disorders, although the evidence base is still emerging and not robust. NAC is a precursor to the antioxidant glutathione and has been studied primarily for its effects on oxidative stress and glutamate modulation in the brain. Several small clinical trials and animal studies suggest that NAC may have anxiolytic (anxiety-reducing) effects, possibly by modulating glutamatergic neurotransmission and reducing oxidative stress, both of which are implicated in the pathophysiology of anxiety disorders.

For example, open-label studies and a few controlled trials have explored NAC’s efficacy in conditions where anxiety symptoms are prevalent, such as obsessive-compulsive disorder (OCD), trichotillomania, and post-traumatic stress disorder (PTSD). Some of these studies have shown modest reductions in anxiety symptoms, often as a secondary outcome, but results are inconsistent and sample sizes are often small. A handful of systematic reviews and meta-analyses suggest that while NAC may have some benefit, the quality of evidence is low, and more rigorous, large-scale randomized controlled trials are needed.

In summary, while there is some scientific rationale and preliminary evidence suggesting NAC could support anxiety management, the overall strength of evidence is limited (rated 2 out of 5). NAC is not a first-line treatment, and its use for anxiety should be considered experimental pending further research. Always consult a healthcare provider before using NAC for anxiety.

More about N-acetyl-cysteine (NAC)
More about Anxiety

Other ingredients used for Anxiety

5-Hydroxytryptophan (5-HTP)
alpha-pinene
amino acids
ashwagandha
Waterhyssop
basil
benegut perilla (proprietary)
bergamot
beta caryophyllene
Bifidobacterium bifidum
Bifidobacterium infantis
Bifidobacterium lactis
Bifidobacterium longum
black cumin
bupleurum falcatum
California poppy
Cannabis sativa oil
chamomile
Chinese salvia root
citrus oil
clove
cordyceps
curcumin
damiana
DHA (docosahexaenoic acid)
epigallocatechin gallate (EGCG)
fennel
gardenia
ginkgo biloba
ginseng
gotu kola
Greek mountain tea
green tea
guayusa
hemp oil
hops
Indian tinospora
inositol
jujube
kava
kudzu
L-glycine
L-theanine
L-tryptophan
lactium casein decapeptide
Lactobacillus brevis
Lactobacillus fermentum
Lactobacillus gasseri
Lactobacillus helveticus
Lactobacillus paracasei
lactiplantibacillus plantarum
Lactobacillus reuteri
Lactobacillus rhamnosus
Lactobacillus salivarius
lavender
lion's mane
lithium orotate
maca
magnesium
magnolia
Matcha
Melatonin
Mint
Motherwort
Muira puama
N-acetyl-cysteine (NAC)
omega-3 fatty acids
passionflower
phellodendron amurense
phosphatidylserine
phytocannabinoids
polygala root
prebiotic blend (proprietary)
pregnenolone
pyridoxal-5-phosphate (P-5-P)
reishi mushroom
relora® (proprietary)
rhizome
Rhodiola
rose oil
rosemary
saffron
sage
SAMe (S-adenosyl-L-methionine disulfate p-toluensulfate)
sceletium
skullcap
spearmint leaf
Sphaeranthus indicus
thyme
Valerian root
velvet bean
vitamin B
vitamin B12
vitamin B6
vitamin C
Zinc
squawvine
catnip
gastrodia
cardamom
shen-chu
Mugwort
anise
Tinospora cordifolia
blackboard tree
peony
lingzhi
lemongrass
kanna
silk tree
chrysanthemum
ganoderma
sweet flag
oriental arborvitae
Menthol oil
St. John's Wort
Wood betony
herbal blend (proprietary)
indigo leaves
cocoa
soursop
geranium
star of Bethlehem
7,8-Dihydroxyflavone
ash
Agastache
alpha-terpineol
Ardisia
Agrimony
apigenin
anamu
Albizia
Aconite
Agmatine
Agarwood
Anemone
Alpha lactalbumin
Asteraceae
aniracetam
Amor seco
betony
black seed
Bifidobacterium
Baikal Skullcap
Bifidobacterium adolescentis
balsam
bayleaf
Bacopin
baicalein
brahmi
Bacopa
bee products
Bombax
bacteria
Bifidobacteria
Bupleurum
bacoside
baicalin
borneol
Camellia sinensis
Centella triterpenes
caryophyllene
Monkey flower
Cinnamomum
Clary sage
capillary artemisia
citron
Chinese raisintree
Cymbopogon martini
Calea zacatechichi
Centella asiatica
Capitate Valerian
Curcuma
catuaba
cowslip
cannabidiol
calamus
Clostridium butyricum
Convolvulus prostratus
Convolvulus pluricaulis
Clerodendrum indicum
Canscora
cannabigerol
dodeca-2E, 4E-dienoic acid isobutylamide
dragonhead
Erythrina
essential oil blend
eugenol
fragrant rosewood
Ficus religiosa
fatty acids
fungus
Gelsemium
Ginsenosides
Griffonia simplicifolia
Glycine
Gardenia jasminoides
gastrodin
Honokiol
Hyperoside
heal-all
Hypericum
hyperforin
Herb Robert
hericium mushroom
hemp
honeybush
iridoids
isoliquiritigenin
Ilex
Indian fagonia
jasmine
jujubosides
Jatamansi
kavalactones
Kefir
lemon balm
Lactobacillus plantarum
Lactucarium
Litsea
linden
Lactococcus rhamnosus
Lactucopicrin
ligustilides
limonene
longan
Lavandin
lotus
Lycopodium
Lactobacillus johnsonii
Large-leaved linden
lupulinum
linalool
Mentha haplocalyx
Myrcene
Marjoram
Mimulus
Monoterpenes
Mimosa
magnolol
Mulungu
Mesembrine
Nardostachys
Nigella seed
Nymphaea caerulea
Nymphaea nouchali
Nutmeg
Oroxylum indicum
oolong tea
Osmanthus
Oxindole alkaloids
Puerain
Phellodendron
Phenylpropanoids
Pulsatilla
prepared aconite tuber
Patchouli oil
probiotics
Passionfruit
paeoniflorin
poppy
Polygala
Petiveria
Plectranthus amboinicus
Purple Monkeyflower
rue
rosavins
Rauvolfia
rosmarinic acid
rose
Rooibos
Sophora
Speedwell
Scoparia dulcis
Sete sangrias
Sesquiterpenes
Sumbul
Self-Heal
Spikenard
Scleranthus annus
Salvia
Sensitive Plant
Southern Tsangshu
Southernwood
Salidroside
Shankhpushpi
Schisandrins
Sandalwood
Stachytarpheta cayennensis
Schizandrol A
Storax
Safranal
Sweet Orange alcohol
Terpenoids
Tea
Traveler's Joy
Trichilia catigua
Tagara
Tetrahydropalmatine
Uncaria
Vetiver
Valerenic acid
Vervain
Vitexin
Viburnum
Verbena
Violet
Vitex Agnus-Castus
Withanolides
White Tea
Wogonin
Xylaria nigripes
Yuzu
Yerba buena
Yohimbine
Ylang ylang

Products containing N-acetyl-cysteine (NAC)

Metagenics AdvaClear
Metagenics AdvaClear
Designs For Health Amino-D-Tox™
Designs For Health Amino-D-Tox™
Pure Encapsulations AntiOxidant Formula
Pure Encapsulations Athletic Nutrients
Metagenics Axis Endo™ Mango
Metagenics Ceralin® Forte
Metagenics Clear Change 10-Day Detox Program with UltraClear RENEW Berry
Metagenics Clear Change 10-Day Detox Program with UltraClear RENEW Vanilla
Metagenics Clear Change 28-Day Detox Program with UltraClear RENEW Berry
Metagenics Clear Change 28-Day Detox Program with UltraClear RENEW Chai
Metagenics Clear Change 28-Day Detox Program with UltraClear RENEW Vanilla
Metagenics Clear Change Daily Essentials
Designs For Health Detox Antiox™
Integrative Therapeutics Detoxication Factors
Integrative Therapeutics Detoxication Factors
Designs For Health Detoxification Support Packets
Pure Encapsulations DIM Detox
Metagenics EstroFactors®
Metagenics GlutaClear®
Designs For Health Hepatatone Plus™
Pure Encapsulations Hist Reset
Pure Encapsulations HM Complex
Pure Encapsulations HM Complex
Metagenics Immune Active
Metagenics Immune Defense Pack
Integrative Therapeutics K-PAX MitoNutrients
Pure Encapsulations Lithium Orotate 5 mg
Pure Encapsulations Lithium Orotate 5 mg
Pure Encapsulations Liver G.I. Detox
Pure Encapsulations LVR Formula
Pure Encapsulations LVR Formula
Pure Encapsulations Macular Support Formula
Pure Encapsulations Macular Support Formula
Designs For Health Metal-X-Synergy™
Metagenics MethylCare
Pure Encapsulations Mitochondria-ATP
Integrative Therapeutics Multiplex-1 No-Iron
Designs For Health N-Acetyl-Cysteine
Integrative Therapeutics NAC
Thorne NAC
Pure Encapsulations NAC+ Glycine Powder
Douglas Laboratories NAC (N-ACETYL CYSTEINE) 600 mg
Douglas Laboratories NAC (N-ACETYL CYSTEINE) 900 mg
Pure Encapsulations NAC (N-Acetyl-l-Cysteine) 600 mg
Pure Encapsulations NAC (n-acetyl-l-cysteine) 600 mg
Pure Encapsulations NAC (N-Acetyl-l-Cysteine) 600 mg
Pure Encapsulations NAC (N-Acetyl-l-Cysteine) 900 mg
Pure Encapsulations NAC (N-Acetyl-l-Cysteine) 900 mg
Pure Encapsulations Nutrient 950® with NAC
Designs For Health OcuForce™
Designs For Health PaleoCleanse Plus™
Designs For Health PaleoCleanse Plus™
Designs For Health PaleoCleanse Plus™ Detox Program
Designs For Health PaleoCleanse Plus™Chocolate Detox Kit
Designs For Health Plant Protein Cleanse
Designs For Health Plant Protein Cleanse Plus™ 570g
Pure Encapsulations Polyphenol Nutrients
Pure Encapsulations Polyphenol Nutrients
Designs For Health Pulmonary Revive™
Pure Encapsulations PureDefense with NAC
Pure Encapsulations PureDefense with NAC
Pure Encapsulations PureGenomics® UltraMultivitamin
Metagenics Renagen™ DTX
Designs For Health S-Acetyl Glutathione Synergy
Metagenics Sinuplex®
Vitabase Super Antioxidant Formula
Pure Encapsulations Th2 Modulator
Metagenics Trancor®
Douglas Laboratories Ultra Preventive
Douglas Laboratories Ultra Preventive
Douglas Laboratories Ultra Preventive ®-EZ Swallow
Douglas Laboratories Ultra Preventive® X
Metagenics UltraClear RENEW Detox Powder Berry
Metagenics UltraClear RENEW Detox Powder Chai
Metagenics UltraClear RENEW Detox Powder Vanilla