Ginkgo biloba extract tablets can be taken for a long time. The composition of the drug is ginkgo flavonoid glycosides and terpene lactones, which is a kind of drug extracted from ginkgo biloba for improving circulation, and it is rare to have gastrointestinal discomfort, headache, allergic reaction and other phenomena occurring, and generally do not need special treatment to relieve themselves. So clinically the drug can be taken for a long time. The drug has a strong antioxidant and free radical scavenging ability, clinically used for: 1. Brain, peripheral blood circulation disorders. 2. Acute and chronic cerebral insufficiency and its sequelae: stroke, inattention, memory loss, dementia. 3. Ear blood flow and nerve disorders: tinnitus, vertigo, hearing loss, ear labyrinth syndrome. 4. Ocular blood flow and nerve disorders: retinopathy and nerve disorders caused by diabetes mellitus, age-related macular degeneration, blurred vision, chronic glaucoma. 5. Peripheral circulatory disorders: various arterial occlusive disease, intermittent claudication, paralysis and cold hands and feet, limb pain. It is prohibited for those who are allergic to any of the ingredients in this product. Pregnant and lactating women should be cautious. If medication is required, it should be used under the guidance of a physician.