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Inclusion Criteria:

* Healthy male or female subject between the ages of 18 and 45 years, inclusive. Healthy is defined as the absence of any disease or abnormalities (including positive test for human immunodeficiency virus (HIV) 1 or 2 antibodies, hepatitis B surface antigen (HBsAg), or hepatitis C antibodies (anti-HCV) or syphilis (RW)) as judged by the investigator on the basis of a detailed medical history, physical examination, blood pressure, pulse rate measurements, 12-lead electrocardiogram, as well as clinical laboratory tests. The responsible investigator may request additional investigations or analyses if necessary
* Non- or ex-tobacco user, being defined as someone who completely stopped smoking or using any form of tobacco or nicotine-containing product for at least 12 months before 1st dose of the study drug in this study.
* Females: Postmenopausal state (absence of menstrual discharge for at least two years and a follicle stimulating hormone (FSH) serum level exceeding 30 IU/L) or premenopausal/perimenopausal state with an effective means of contraception (oral, injected, implanted, or transdermal hormonal contraceptives, vaginal contraceptive ring, intrauterine device, or status after operative sterilization) during the study and 30 days thereafter, single male partner who has had a vasectomy, or abstinence from heterosexual intercourse, during the study and 30 days thereafter.
* Males: No pregnant spouse or partner at screening and willingness to protect potential spouse or partner from becoming pregnant during the study and 30 days thereafter.
* Body Mass Index (BMI) ≥ 18.5 and ≤ 30.0 kg/m2 with a total body weight \>50 kg.
* A personally signed and dated informed consent document, indicating that the subject has been informed of all pertinent aspects of the study.
* Willingness and ability to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures specified in the protocol.

Exclusion Criteria:

* Use of medications other than contraceptives specified in Inclusion criterion 3 or occasional use of other medications approved by the Investigator.
* Use of any vitamins, dietary and herbal supplements within 7 days before each dose of study drugs.
* Use of any nonprescription or prescription medications, including naproxen medications, other than contraceptives, within 5 times the drug's half-life before each dose of study drug.
* Depot injection or an implant of any drug within 3 months prior to dosing.
* History of any allergy or hypersensitivity (e.g. skin reaction, asthma, angioedema) to naproxen, ibuprofen, ASA, other NSAIDs or any related products (including excipients of the formulations).
* Females: Confirmed pregnancy or a positive pregnancy test at the screening visit, or planning to become pregnant during the duration of the study, and/or breast-feeding
* Has a history of peptic ulcers, gastrointestinal bleeding of any etiology, bleeding disorders, gastrointestinal disease (including chronic heartburn or gastroesophageal reflux disease), inflammatory bowel disease (ulcerative colitis, Crohn's disease), or gastrointestinal surgery other than appendectomy.
* Has asthma, hypertension, fluid retention, or heart disease either by history or by the medically qualified principal investigator's medical judgment; has hemophilia and other disorders of blood clotting and hemostasis disorders, has cerebrovascular hemorrhage or other hemorrhages;
* Has renal or hepatic impairment; according to the medically qualified investigator discretion;
* Acute infectious disease within 4 weeks prior to screening.
* Treatment with an investigational drug within 3 months preceding the first dose of study treatment.
* Preplanned surgical procedures during the study period, if this may interfere with the conduct of the study.
* History of alcoholism defined as alcohol consumption in the 6 months before screening that exceeds weekly limits of 10 alcohol units (2 L of wine or 5 L of beer or 0.5 L of spirits) or substance abuse, as judged by the Investigator, within the past 6 months preceding this study.
* Consumed alcohol beverage(s) within 48 hours prior to the first scheduled dose of the study drug, positive respiratory alcohol test at screening, or inability to abstain from alcohol consumption during the entire study period.
* Positive urine screen for drug abuse.
* Use of xanthine containing products (e.g., coffee, tea, chocolate or cola drink) within 48 hours before each dose of study drug.
* Ingestion of food or beverages containing grapefruit, Chinese grapefruit (pomelo) or Seville oranges (including marmalade) within 10 days before the first dose of study drug and throughout the study.
* Donation or loss of blood within 3 months prior to the first dose of study drug if the estimated lost blood volume equaled or exceeded 450 mL.
* Abnormal results of laboratory and instrumental methods of examinations, including electrocardiogram (ECG) at screening;
* Heart rate \<60 or \>90 per minute at rest, or systolic blood pressure \<100 or \>130 mm Hg, or diastolic blood pressure \<70 or \>90 mm Hg measured at screening visit.
* Has any acute or chronic, medical or psychiatric condition(s) that may increase the risk associated with study participation or investigational product administration or may interfere with the interpretation of study results and, in the judgment of the medically qualified investigator, would make the subject inappropriate for entry into this study;
* Relationship to persons involved directly in the conduct of the study (i.e., principal investigator, subinvestigators,study coordinators, other study personnel, employees or contractors of the sponsor or Johnson \& Johnson subsidiaries, and the family of each).

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