Ginkgo pills are usually sold in the sizes of 40 mg, 60 mg, or 120 mg. The suggested dose is 120 mg daily based on clinical trials. You will need to take 40 mg for 3 times, 60 mg for 2 times, or 120 mg once. Always take Ginkgo with meals. Most trials used the 40 mg three times regimen. Its advantage is that it allows more continuous delivery of active ingredients. The 120 mg once regimen is most convenient but the active ingredients unlikely remain stable whole day long. Ginkgo ingredients have half-lives in human blood at 3 to 6 hours. The 60 mg twice regimen is a good balance of keeping steady level of active ingredients and convenience.
Because Gingko can have side effects it is important to stick with the recommended dosage and check with a doctor before beginning use.