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.
5 of 8 | Green Tea
How it Works
The caffeine in green tea stimulates the central nervous system. "Green tea is a better choice than coffee because it has antioxidants," says Kravich. Cautions
Large amounts can upset the stomach. Avoid caffeine if you have a weak heart, kidney disease, overactive thyroid, or anxiety disorder. Forms
Decaffeinated forms tend not to have the same therapeutic profile, says Bauman. To get the benefits without the caffeine, use green tea extract. Dosage
Mix 1 tsp of leaves in 1 cup of hot water. Add licorice to sweeten and strengthen the flavor, or Siberian ginseng for an energizing combination, says Bauman.