Effect of Polyphenols Combined to L-citrulline on Ambulatory Blood Pressure

6-week supplementation period with 764 mg/day of cranberry and grape seed extracts (containing polyphenols) and 2 g/day of L-citrulline Participants will have to take daily 2 NO Ultra capsules (containing 382 mg cranberry and grape seed extracts / 1 g L-citrulline) between breakfast and lunch and 2 other NO Ultra capsules between lunch and dinner.

"6-week supplementation period with placebo capsules (the active ingredients will be replaced by cellulose)~Participants will have to take 2 capsules of cellulose between breakfast and lunch and 2 capsules between lunch and dinner to match the number of capsules ingested daily by the NO Ultra group."