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N-Acetyl Cysteine: study protocols

16 study groups say how much N-Acetyl Cysteine participants took a day. These are the doses the studies gave. They are not a recommendation.

N-Acetyl Cysteine: what the research found →

Dose per serving from products

828 products in our catalogue print how much N-Acetyl Cysteine a serving holds.

Most common: 500 mg to 1 g, 31% of 828 products.

Dose per servingProducts
10 mg or less
23
10 mg to 25 mg
35
25 mg to 50 mg
63
50 mg to 100 mg
117
100 mg to 250 mg
141
250 mg to 500 mg
144
500 mg to 1 g
260
1 g to 2.5 g
45

Dose per serving from research

16 study groups in 12 studies say how much N-Acetyl Cysteine participants took a day.

These are the doses the studies gave. They are not a recommendation.

Most common: 1 g to 2.5 g, 69% of 16 study groups.

Daily doseStudy groups
500 mg to 1 g
5
1 g to 2.5 g
11

Commonly used together

4 of 16 study groups took N-Acetyl Cysteine with something else, but nothing that 3 or more different studies gave.

16 study groups

Study
Acetylcysteine protects against acute renal damage in patients with abnormal renal function undergoing a coronary procedure
2002 · acetylcysteine group · Adults with chronic renal insufficiency undergoing a coronary procedure; age and sex not stated
800 mg—60
Twice daily N-acetylcysteine 600 mg for exacerbations of chronic obstructive pulmonary disease (PANTHEON): a randomised, double-blind placebo-controlled trial
2014 · N-acetylcysteine group · Adults aged 40–80 years with moderate-to-severe COPD
1.2 g1 year504
Impact of smoking status and concomitant medications on the effect of high-dose N-acetylcysteine on chronic obstructive pulmonary disease exacerbations: A post-hoc analysis of the PANTHEON study
2019 · NAC · Adults with chronic obstructive pulmonary disease; smoking status varied
1.2 g—482
N-Acetyl cysteine and clomiphene citrate for induction of ovulation in polycystic ovary syndrome: a cross-over trial
2007 · clomiphene citrate plus N-acetyl cysteine · Women with polycystic ovary syndrome
1.2 g5 days470
Effect of high-dose N-acetylcysteine on exacerbations and lung function in patients with mild-to-moderate COPD: a double-blind, parallel group, multicentre randomised clinical trial
2024 · N-acetylcysteine group · Adults aged 40–80 with mild-to-moderate COPD (GOLD stage 1–2)
1.2 g88 weeks464
Effect of N-acetylcysteine on exacerbations of bronchiectasis (BENE): a randomized controlled trial
2019 · N-acetylcysteine group · Adults aged 18–80 with idiopathic or post-infective bronchiectasis and at least two exacerbations in the past year, stable for at least 4 weeks before randomisation
1.2 g1 year81
Prophylactic NAC promoted hematopoietic reconstitution by improving endothelial cells after haploidentical HSCT: a phase 3, open-label randomized trial
2022 · NAC prophylaxis cohort (group A) · Patients aged 15–60 years with acute leukemia in complete remission undergoing first haploidentical HSCT and pre-HSCT bone-marrow endothelial cell percentage <0.1%
1.2 g12 weeks80
N-acetyl-cysteine is a novel adjuvant to clomiphene citrate in clomiphene citrate-resistant patients with polycystic ovary syndrome
2005 · NAC group (group I) · Women aged 18–39 with clomiphene citrate-resistant PCOS undergoing infertility therapy
1.2 g5 days75
Efficacy of selenium and/or N-acetyl-cysteine for improving semen parameters in infertile men: a double-blind, placebo controlled, randomized study
2009 · N-acetyl-cysteine group · Infertile men with idiopathic oligo-asthenoteratospermia
600 mg26 weeks118
Efficacy of selenium and/or N-acetyl-cysteine for improving semen parameters in infertile men: a double-blind, placebo controlled, randomized study
2009 · selenium plus N-acetyl-cysteine group · Infertile men with idiopathic oligo-asthenoteratospermia
600 mg26 weeks116