A Study to Evaluate Pharmacokinetics, Safety and Tolerability of Single and Multiple Intravenous Doses of N-acetylcysteine (NAC) in Chinese Healthy Volunteers

Inclusion criteria

• Informed consent: signed written informed consent before inclusion in the study
• Ethnicity, Sex and Age: Chinese males and females, 18-45 year old inclusive
• Weight: body weight ≥50 kg
• Body Mass Index: 19-26 kg/m2 inclusive
• Vital signs: systolic blood pressure 100-139 mmHg, diastolic blood pressure 50-89 mmHg, heart rate 50-90 bpm, measured after 5 min at rest in the sitting/supine position
• Full comprehension: ability to comprehend the full nature and purpose of the study, including possible risks and side effects; ability to co-operate with the investigator and to comply with the requirements of the entire study
• Nicotine addiction (smoker subjects only): ability to abstain from smoking for the duration of the clinical study
• Contraception and fertility (women only): women of child-bearing potential must be using at least one of the following reliable methods of contraception:

• Hormonal oral, implantable, transdermal, or injectable contraceptives for at least 60 calendar days before the screening visit
• A non-hormonal intrauterine device or female condom with spermicide or contraceptive sponge with spermicide or diaphragm with spermicide or cervical cap with spermicide for at least 60 calendar days before the screening visit
• A male sexual partner who agrees to use a male condom with spermicide
• A sterile sexual partner

Women of non-child-bearing potential or in post-menopausal status for at least 1 year will be admitted. Women of childbearing potential should be willing to adopt abstinence or contraception measures during the study and two weeks post-dose. For all women, pregnancy test result must be negative at screening and day -1.

Exclusion criteria

• Electrocardiogram (12-lead ECG in supine position): clinically significant abnormalities
• Physical findings: clinically significant abnormal physical findings which could interfere with the objectives of the study
• Laboratory analyses: clinically significant abnormal laboratory values indicative of physical illness, in particular significant laboratory abnormality indicative of hepatic condition (more than 3 times the upper limit)
• Allergy: ascertained or presumptive hypersensitivity to the active principle and/or formulations' ingredients; history of anaphylaxis to drugs or allergic reactions in general, which the investigator considers may affect the outcome of the study
• Diseases: significant history of renal, hepatic, gastrointestinal, cardiovascular, respiratory, skin, haematological, endocrine, urologic, metabolic, neurological or psychiatric diseases, as determined by the investigator, that may interfere with the aim of the study; history of carcinoma in situ and malignant disease; active bacterial or viral infection and fever >38°C within 48 h prior to study treatment administration
• Virology: positive result of HIV, hepatitis B (HBV), hepatitis C (HCV) or Treponema pallidum (TP) assays
• Surgery: any surgery within 60 calendar days of screening (excluding diagnostic surgery)
• Medications: medications, including over the counter (OTC) medications, herbal remedies and traditional Chinese remedies for 2 weeks before the start of the study. Hormonal contraceptives for women will be allowed
• Investigative drug studies: participation in the evaluation of any investigational product for 1 month before this study
• Blood donation: blood donations for 90 calendar days before this study
• Drug, alcohol, caffeine, tobacco: history of drug, alcohol [>1 drink/day for females and >2 drinks/day for males, defined according to the USDA Dietary Guidelines 2015-2020] caffeine (>5 cups coffee/tea/day) or tobacco abuse (≥10 cigarettes/day)
• Abuse drug test: positive urine abuse drug test at screening or day -1
• Alcohol test: positive alcohol breath test at day -1
• Diet: abnormal diets (<1600 or >3500 kcal/day) or substantial changes in eating habits in the 4 weeks before this study; vegetarians; consumption of alcohol, grapefruit, products containing grapefruit, or beverages containing xanthines (coffee, tea, soda, coffee with milk, energy drinks) within 48 hours prior to the enrolment
• Pregnancy (females only): positive or missing pregnancy test at screening or day -1, pregnant or lactating women
• Vaccination within 4 weeks of study treatment
• Other unspecified reasons that, in the opinion of the investigator, make the subject unsuitable for enrolment.