Effects of Chardonnay Seed Flour on Vascular Health

Inclusion Criteria: 1. Age \>= 18 years old 2. Demonstrated endothelial dysfunction (EndoPAT score \<= 2) at time of screening. Exclusion criteria: 1. Age below 18 or above 80 2. Endothelial function greater than 2.0 at baseline 3. Hypertension (at screening): any patient with systolic blood pressure (SBP \>=170 mmHg or diastolic blood pressure \>= 110 mmHg, or hypotension (SBP \< 100 mmHg 4. Abnormal liver function tests 5. Uncontrolled Diabetes Mellitus or the use of metformin for Diabetes Mellitus 6. Difficulty swallowing capsules 7. Gastrointestinal disease manifesting with symptoms of malabsorption such as celiac disease or Crohn's disease 8. Non-English speakers 9. Vulnerable populations unable to consent such as prisoners or dependents 10. Any surgical or medical condition which might significantly alter the absorption, distribution, metabolism, or excretion of the CSF including, but not limited to, any of the following: 1. History of major gastrointestinal tract surgery such as gastrectomy, gastroenterostomy or bowel resection 2. Any history of pancreatic injury, pancreatitis or evidence of impaired pancreatic function/injury as indicated by abnormal lipase or amylase 3. Evidence of hepatic disease as determined by a history of hepatic encephalopathy, a history of cirrhosis, esophageal varices, or a history of portocaval shunt. 11. History of hypersensitivity to any of the study supplement or suspected contraindications to the study supplement. 12. History of noncompliance to medical regimens or unwillingness to comply with the study protocol