Powders

• Powered drink mixes, aka shakes, come in a variety of flavors and are available in either a straight protein mix (high-protein, low-fat, low-carbohydrate content) or as a meal replacement powder, or MRP. MRPs are the reverse of the protein powders because they include higher fat and carbohydrate content along with the protein and they're designed to calorically replace a daily meal. They aren't for those looking to drop weight, while the protein shakes could be a viable option for those people. Low-calorie protein shakes are meant to be used in conjunction with a sound nutritional diet and bolster protein intake, which helps curb appetite and promotes lean muscle building. Mix up a protein shake once or twice a day to manage your daily protein requirements.
  
  

Pills

• There are a number of pills on the market. The manufacturers of brands like Alli claim taking the pill is a permanent life change and not meant to be a quick fix diet drug. Some pills, such as Nuphedragen, claim to activate receptors in the body that promote fat burning, the same receptors targeted by illegal narcotics like cocaine. Several other brands expand in the stomach when exposed to liquid so that the dieter feels fuller quicker. None of these claims have been back by serious laboratory research, so if you decide to take any of these pill products, take their label claims with a grain of salt.
  
  

Thermogenics

• Taking herbal supplements like L-carnitine or chromium picolinate may actually have some benefit. Take them as directed, but resist the temptation to take more than the bottle recommends, because some adverse side effects may occur. Other branded names like Ripped Fuel may be fine (its former chief ingredient ephedra has been banned), but if you're caffeine sensitive or have a history of heart conditions, it's best to leave Ripped Fuel and similar products alone because of their use of Ma-Huang, an herb that's been known to cause intestinal discomfort and nervousness. Other thermogenic (fat burning) type aids include grapefruit, said to contain enzymes that block fat absorption. There's little to suggest that eating grapefruit is negative, so feel free to have some as part of a balanced breakfast or lunch.