If hypertensive patients need to supplement folic acid, they should take small doses of folic acid orally, generally 0.4mg per tablet, daily intake of no more than 0.8mg, taking 5mg of folic acid dose is too large. Hypertensive patients with elevated blood homocysteine, the risk of cardiovascular and cerebrovascular disease will be significantly higher, this time the need for supplemental folic acid to reduce the level of blood homocysteine, this time to take a small dose of folic acid can play a role in this role, daily supplemental folic acid is not more than 0.8mg, taking 5mg folic acid dose is too large. In addition, not all hypertensive patients need to supplement folic acid, patients with normal blood homocysteine do not need to supplement folic acid, patients with mildly elevated blood homocysteine can first consider supplementing folic acid from their daily diet, such as green leafy vegetables, lean meat, animal liver and so on. Whether hypertensive patients need to supplement folic acid needs to follow the doctor’s instructions, the doctor will be based on the specific circumstances of different patients to provide guidance.