Yes, recommendations are given. Different meta-analyses have shown that intake of high doses of Omega-3 polyunsaturated fatty acids, >3 grams/day, resulted in a decrease in BP in patients with hypertension who were not treated with other medications. In the meta-analysis by Appel et al, which included 17 clinical trials, Omega-3 intake resulted in a decrease in systolic blood pressure (SBP) and diastolic blood pressure (DBP) in hypertensive patients. For hypertensive patients aged >45 years with BP >140/90 mmHg, Omega-3 can show superior antihypertensive effects. 69 obese hypertensive patients, the daily intake of fish oil group containing 3.65 grams of Omega-3 can reduce SBP and DBP by 6 mmHg and 3 mmHg. If the intake of high-energy food is controlled on this basis, the SBP and DBP can be reduced by 6 mmHg and 3 mmHg. If high energy food intake is controlled on top of this, SBP and DBP can be decreased by up to 13 mmHg and 9.3 mmHg, respectively. In patients with metabolic syndrome, increased intake of Omega-3 as a lifestyle intervention may help improve blood pressure. -British Journal of Nutrition (2012), 107, S195-S200, IF= 3.72 As for the brand, try to choose high purity Omega-3, there are foreign brands such as LOVAZA and Omacor, but they are both prescription medicines, but there is a fish oil with the same ingredient as these, called Ou Quen. that is called Ou quenching en.