In January 2020 researchers from Italy published their review of the medical scientific literature to assess whether dietary supplements are able to lower blood pressure levels in pregnant women with hypertension. Results showed that a number of studies support the use of calcium, vitamin D, folic acid, and resveratrol in preventing the development of hypertensive disorders in pregnancy. Further research is required to identify the dosage and timing of the supplementation as well as the group of women that might benefit most from this approach.
Fogacci S et al. Nutraceuticals and Hypertensive Disorders in Pregnancy: The Available Clinical Evidence. Nutrients. 2020 Jan 31;12(2). pii: E378