Although you will find a plethora of weight loss drugs on the market, they are however mostly categorized as being either prescription or perhaps non-prescription based. The prescription weight loss drugs, also known as ethical drugs, are drugs which are authorized by the FDA and which can just be bought through the approval of a health care professional.

Equally, the various FDA approved prescription weight loss medications could be further classified in two groups which are different depending on their particular duration of use - i.e. being either short- or long-term. This particular article takes a glimpse at the presently FDA approved short-term excess weight loss medicines and coincidentally, they all happen to be appetite suppressing medicines.

Appetite suppressing medicines work by either reducing appetite or even boosting the sensation of fullness. They generally work on the fundamental idea of controlling the hypothalamus - the appetite control center of the human brain - by increasing one or more brain chemicals which modulate appetite and mood.

The approved appetite suppressing drugs belong to a group of medications known as phenethylamines - somewhat similar to amphetamines. Amphetamines are any of a team of powerful stimulant drugs that act on the central nervous system and which typically triggers increased amount of heart rate, blood pressure, and energy levels. Inspite of the point that phenethylamines are chemically like amphetamines, they however have a substantially reduced incidence of the negative effects regarding amphetamines.

The FDA-approved appetite suppressing medications affect the central nervous system through a number of different active ingredients as well as modulation mechanisms. These appetite suppressing medications may be split into three major active component groups as follows:

Phentermine

These're probably the most popular short term prescription based weight loss drugs now. Phentermine based appetite suppressants were initially approved in 1959 and specifically to be used for short-term treatment of obesity, normally not more than 6 months.

The primary active ingredient used in Phentermine is Phentermine hydrochloride that induces a group of neurotransmitters known as catecholamine like epinephrine (also often known as adrenaline), dopamine, and norepinephrine. Phentermine hydrochloride affects the central nervous system by triggering a "fight or flight" state in the human body.

View this site - simply click the next document - condition is generally found to cause the brain not to receive the hunger signals the stomach could be sending to it due to the concentration of its on the way to respond to the immediate as well as more determined demand for power due to the "fight or maybe flight" signal.