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.
8 of 8 | Vitamin B
How it Works
"Vitamin B in general helps extract energy from a healthy diet by metabolizing fats, proteins, and carbs," says Babal. Vitamin B12 helps the processing and absorption of iron, says Kravich. Cautions
The Office of Dietary Supplements suggests you use caution if you are taking drugs for GERD, peptic ulcer disease, or diabetes. Forms
B vitamins can be taken orally as pills or liquids. They are also plentiful in fortified cereals, mollusks, beef liver, trout, and salmon. Dosage
Kravich suggests "a good B100 complex like Twinlab or Solgar." The RDA for B12 is 2.4 mg--a 1,000 mcg daily supplement "will help your energy levels, especially if you don't eat meat or eggs."