What are some good vitamins to take while trying to lose about 40 pounds?

Carnitine & tea: Carnitine is an Amino Acid found in red meat, but is also a supplement. It is a necessary cofactor that your body must have to convert body fat to energy. Carnitine (500-1500 mg/day) combined with a low carb diet and exercise should help lose weight fast. Add green tea for extra fat burning effect. It helps raise body temp to burn fat faster.