Patients with high blood pressure who drank a daily 250ml glass of beetroot juice experienced an average decrease in blood pressure of about 8/4 mmHg (which for many patients brought their blood pressure levels back into the ‘normal’ range).atients were randomly assigned a daily dietary supplementation for four weeks – half received the dietary nitrate (250ml beetroot juice) and the other half received a placebo (250ml nitrate-free beetroot juice).