This study is to evaluate the effects of multiple-dose clarithromycin on the single-dose pharmacokinetics (PK) of apixaban with parameters like Cmax, AUC(INF), and AUC(0-T).

Inclusion Criteria:

1. Signed Informed Consent
2. Target population: Healthy subjects as determined by medical history, surgical history, physical examination, vital signs, electrocardiogram (ECG), and clinical laboratory tests including coagulation parameters.
3. Subjects with body mass index of 18 to 30 kg/m2, inclusive
4. Women must not be breast feeding, have a negative serum or urine pregnancy test and must agree to follow instructions for method(s) of contraception for the duration of treatment with study treatments apixaban and clarithromycin plus 5 half-lives of study treatments apixaban and clarithromycin plus 30 days (duration of ovulatory cycle) for a total of 33 days post-treatment completion.
5. Men who are sexually active with WOCBP must agree to follow instructions for method(s) of contraception for the duration of treatment with study treatments apixaban and clarithromycin plus 5 half-lives of the study treatment plus 30 days for a total of 33 days post-treatment completion. In addition, male participants must be willing to refrain from sperm donation during this time.

Exclusion Criteria:

1. History of any significant medical illness, drug allergy including allergy to apixaban, FXa inhibitors (and/or their excipients), clarithromycin, macrolides, and/or related compounds. History of substance abuse and use of nicotine containing products and/or alcohol abuse.
2. History of coagulopathy, prolonged or unexplained clinically significant bleeding, or frequent unexplained bruising or thrombus formation, including hypermenorrhea, intra-cranial hemorrhage, family history of bleeding disorders in first degree relatives, and/or any adverse reaction to anticoagulants or antiplatelet agents that resulted in excessive bleeding.
3. History of recurrent neurological or gastrointestinal disorders, including insomnia, chronic headaches, dizziness, gastroesophageal reflux disease, cholecystectomy, gastric ulcers and/or Gilbert's syndrome.
4. History of antibiotic induced secondary infections, including candidiasis.
5. Evidence of organ dysfunction or any clinically significant deviation from normal in physical examination, vital signs, ECG, or clinical laboratory tests beyond what is consistent with the target population.