I was asked about a product called "Fastin" as a dietary aid. After some research I found that this is a product made in the Canada by Global Alliance Corp and disturbed by out of a company in Georgia. It is not a FDA regulated product. Its primary ingredient is phyenylethylamine HCL 245 mg and 100 caffiene.
The "P-hcl" product is supposed "The thought process behind Phenylethylamine as a weight loss supplement is that it is related to amphetamine and can act as a releasing agent of norepinephrine and dopamine, but once again the compound is rapidly metabolized so there is little effect on the brain. The half life of Phenylethylamine HCL is about 10 to 15 minutes.” http://phenylethylaminehcl.com/
The product Caffeine as noted here from the mayo clinic; Appetite suppression. Caffeine may reduce your desire to eat for a brief time, but there's not enough evidence to show that long-term consumption aids weight loss. Calorie burning. Caffeine may stimulate thermogenesis — one way your body generates heat and energy from digesting food. But this probably isn't enough to produce significant weight loss. Water loss. In some people, caffeine can act as a diuretic, which means it increases the amount of urine you excrete. This increase in urine output, mostly water loss, may temporarily decrease your body weight, but it doesn't result in the loss of body fat. http://www.mayoclinic.com/health/caffeine/HQ00369
So here we are once again with no solid scientific evidence to support of actual fat loss. Once again if there was a product on the market that would create TRUE fat loss doctors would be prescribing it in vast volume amounts. It appears that caffeine is probably the main factor in the here as a blocker to fatigue receptors.
Appetite is not just an item we need to suppress it is an important physiological marker on need of essential nutrients to support homeostatic systems for life. This is often a situation tackled by many people in the exercise physiology world. We treat the cause of this with learning when and why our appetite dictates the response for food. We also retrain proper eating habits to work with proper exercise plan. With a little self-reflection, training in proper diet and the right exercise plan appetite begins to be a good and healthy response.
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