Please assess the completion status of the following clinical trial:

Trial Title: Effect of Probiotic Supplementation on Endothelial Function

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~1. Age between 40-75 years old~2. Male sex~3. History of known coronary artery disease (by either history of myocardial infarction, angiogram demonstrative \>=50% stenosis in at least 1 major epicardial coronary artery, or a previous stress test that showed evidence of ischemia that has not been revealed to be a false positive test by angiography)~Exclusion Criteria:~1. Unstable angina or myocardial infarction by history, ECG, and/or enzymatic criteria within 1 month of enrollment.~2. Left ventricular dysfunction as defined by an left ventricular ejection fraction documented as \< 45% within 1 year of enrollment by an echocardiogram, MRI, or nuclear imaging.~3. Uncontrolled hypertension with a blood pressure greater than 170/100 mmHg at the screening visit.~4. Known history of chronic renal insufficiency, liver dysfunction, or cancer besides non-melanoma skin carcinomas or localized prostate cancer requiring systemic treatment within five years of enrollment.~5. Known history of cognitive impairment or inability to follow study procedures~6. Patient with an implanted defibrillator or permanent pacemaker on with the potential participant is known to rely upon for greater than 50% of ventricular depolarizations.~7. Patients who received probiotics, prebiotics, and antibiotics in the last 12 weeks.~8. Patients with dosing changes of vasoactive medications and 3-hydroxy-3-methylglutaryl-coenzyme A reductase inhibitors in the 6 weeks prior to enrollment.

- Gender: MALE
- Minimum Age: 40 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- GoodBelly Probiotic and Vancomycin (Type: EXPERIMENTAL): Good Belly Probiotic 2.7 oz Daily x 6 weeks Followed by a 4 week wash out period and then, Vancomycin, a non absorbed antibiotic administered (250 mg four times daily) orally for 10 days

Based on this trial design, predict the completion outcome and termination type (if applicable).