Before you swallow anything, talk to your doctor to rule out physical causes for your fatigue—and to make sure the vitamin or herb you're considering won't interact with any other drugs you're taking.
2 of 8 | Gingko Biloba
How it Works
Ginkgo extract improves circulation, mental acuity, depression, and asthma, reports ConsumerLab.com, an independent testing company. Cautions
Spasms, cramps, and mild digestive problems can occur. Avoid ginkgo if you're taking aspirin or any other bood-thinning drug. Forms
Look for extract, not leaves. Since fatty acids are needed for absorption, teas will not provide the same benefits, says Ed Bauman, Ph.D. Dosage
Bauman suggests up to 240 mg of a 50:1 extract, or 40 to 80 mg" of powder extract.