Vitamin B

• B vitamins increase energy levels as well as helping with muscle production. These two factors can boost the metabolism. Vitamin B also strengthens the immune system, aids in cell function, breaks down carbohydrates into energy, and breaks down fats and proteins. According to linkroll.com, there are several B vitamins, including biotin, cyanocobalamin (B12), folic acid, niacin (B3), pyridoxine (B6), pantothenic acid (B5), riboflavin (B2), and thiamine (B1). Vitamin supplements can be found at any drug store, and can be used in conjunction with a daily multi-vitamin under a doctor's recommendation. B vitamins are found naturally in foods such as meats, tuna, beans and bananas.
  
  

Vitamin C

• Another way to boost the metabolism is by consuming antioxidants, such as vitamins C and E, which protect muscles by fighting free radicals that can potentially harm the cells. Vitamin C removes excess toxins while strengthening the body's immune system. As a result, the metabolism is boosted, because energy is directed towards burning fat instead of fighting radicals. Natural food sources of vitamin C include citrus fruits, strawberries, cantaloupe, bell peppers and broccoli. Vitamin C supplements can be found at any drug store.
  
  

Vitamin E

• Vitamin E absorption is supported by Vitamin C. Hence, the two vitamins go hand-in-hand when nourishing the body. Vitamin E supplements can be found at any drug store, and naturally in vegetable oils and nuts.
  
  

CLA and DMAE

• Conjugated linoeic acid (CLA) and dimethylethanolamine (DMAE) are compounds that aid in muscle development. Muscles are key to metabolic increase, as they burn more calories than fat cells. CLA and DMAE are not steroids, and do not create muscle tissue, but rather help produce it. DMAE takes this a step further by helping the muscles contract. Energy can also be increased through the use of DMAE. CLA helps the body shrink fat cells. Nature's Bounty, Nature's Made and Natrol are all vitamin brands that make CLA and DMAE. They can be found at GNC.
  
  

Green Tea Supplements

• Green tea is another source for metabolic boost. It also prevents excess insulin production in the body from food consumption, and helps with cell function. Also, it makes you feel full, thus preventing over-eating. Green tea has a strong taste that some people do not like, and it is not always a fast and convenient option. There are vitamin supplements on the market that are made exclusively with green tea. Two brands are Nature's Bounty and Natrol, and both can be found at GNC and the Vitamin Shoppe.