Carnitine: Carnitine is important for coordinating fat an carb use in muscles. People with type 2 diabetes an obesity often have poor carnitine metabolism. Carnitine supplementation decreased carb use, but increased fat breakdown. It also increased glycogen storage, which is important for intensity training. Carnitine supplements may be particularly effective for weight loss it promotes fat for fuel.
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Chromium: Prevents weight gain an improves blood sugar control.
Lack of exercise an poor diet cause problems with blood sugar and insulin regulation. Insulin resistance is extremely common in America an is linked with the metabolic syndrome- a group of health problems that include type 2 diabetes, abdominal fat deposition, high blood pressure, abnormal blood fats (high cholesterol an triglycerides, an low HDL). About 15 years ago a nutritionist found that chromium picolinate works like insulin to move sugar into cells an improves the sensitivity of insulin receptors. It was found that 1,000 mcg per day for three months helped prevent weight gain and improved insulin resistance in patients with type 2 diabetes.
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Please feel free to add other supplements that help with weight loss I left a bunch out so we can all discuss our views an how the supplents we use have effected us with results.

Guarana- Guarana is known to increase stamina, reduce fatigue and improve physical endurance. It is also known to suppress the appetite which can lead to weight loss.

Green tea- Research indicates that green tea and its extract can safely enhance thermogenics and promote fat burning in the body without increasing the heart rate as many commercial products do.

Hydroxycitric Acid - HCA seems to work by blocking the conversion of sugary foods and starches into fats which effectively inhibits fat production. It also works on the serotonin levels in the brain which is a key regulator in appetite control.

Choline- Helps in the proper utilization of fat in the body and is therefore known to contribute to weight loss. It works as an emulsifier mixing water and fat together, helping the blood to carry fat through the body so it doesn't deposit on arterial walls.

Conjugated linoleic acid - Can assist in weight loss efforts as it decreases the size and number of fat cells present in the body and is also thought to assist the production of lean muscle mass and add muscle tone.

Great posts guys. Currently I'm using 3 of the above mentioned supplements for my off-season. They seem to be working effectivley for being legal non-prescription.