The BEET-BP Trial - Investigating the Effect of Dietary Nitrates on Hypertension in Pregnancy

Inclusion Criteria: * Aged ≥18 * Able to give written informed consent * Singleton pregnancies, between 24+0 to 36+6 weeks gestation with new onset gestational hypertension (defined by ISSHP2018 as new onset BP \>140/90 and no evidence of proteinuria, biochemical or haematological abnormalities or fetal growth restriction) Or * Singleton pregnancies, between 24+0 - 36+6 weeks gestation, with chronic hypertension (defined by ISSHP2018 as BP ≥140/90 predating the pregnancy or recognised at \<20 week's gestation) Or * Singleton pregnancies, between 24+0 - 36+6 weeks gestation, with preeclampsia (defined by ISSHP2018 as Gestational hypertension accompanied by ≥ 1 of the following new onset conditions at or after 20 weeks' gestation: * Proteinuria (24h urine collection\>300mg/day, Protein-creatinine ratio\>30 mg/mmol) * Other markers of maternal organ dysfunction, including: * Acute Kidney Injury (AKI) (creatinine ≥90μmol/L; 1mg/dL) * Liver involvement (elevated transaminases e.g. alanine transaminase (ALT) or aspartate aminotransferase (AST) \>40IU/L) with or without right upper quadrant or epigastric abdominal pain * Neurological complications e.g. eclampsia, altered mental status, blindness, stroke, clonus, severe headaches and persistent visual scotomata * Haematological complications (thrombocytopenia - platelet count \<150 000/μL, disseminated intravascular coagulation, haemolysis * Uteroplacental dysfunction (fetal growth restriction, abnormal umbilical artery doppler wave…