Saffron has the effect of improving blood circulation and dilating blood vessels throughout the body. Saffron can dilate the blood vessels in the brain and increase the blood flow in the brain, and patients will have headaches, which is a normal manifestation of saffron. Patients do not care, if the symptoms of headache is serious, you can reduce the dose of saffron by half. The headache will be experienced when drinking saffron at the beginning, but after a period of time, the headache will disappear once the body gets used to it. Patients often drink saffron to help blood circulation, especially the middle-aged and elderly.