Dr. Oz investigates the extreme, controversial vitamin injections that claim to help you fight fatigue, lose weight and slow the process of aging. Some doctors claim they work, but are they safe? Plus, Dr. Oz busts medication myths and reveals a quick-and-clean eating plan that will help you slim down!

Diet and Nutrition

The Dos & Don'ts of Taking Multiple Vitamins and Supplements

When it comes to combining supplements, it pays to know which may block each other from doing their good work and which may amplify their effects.

When it comes to combining vitamins, it pays to know which may block each other from doing their good work and which may amplify their effects.

Fat-Soluble Vitamins: A, D E, and K

Absorption is improved if you take fat-soluble vitamins with a meal containing healthy fats. One study found taking D with your largest meal of the day increases your blood level by 50%.

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