Phentermine diet pills have been around for a long time. The FDA (Food and Drug Administration) originally approved it for market back in 1959 as an appetite suppressant.

It works like this: It uses methampetamine, a constitutional isomer, as a central acting stimulant. This releases neutransmitters in the brain, such as dopamine, adrenalin, and noradrenaline. What this means to you is that by stimulating certain neuron bundles your brain has been signaled to its fight or flight response. When this occurs your body stops its hunger trigger. Therefore your appetite is suppressed because the brain is not receiving a hunger signal.

Phentermine diet pills are currently sold under two brand names, Adipex and Ionamin. Gate Pharmaceuticals produces Adipex. Celltech produces Ionamin. The differences between the two are debatable. Ionamin is in a resin matrix and is time released and said to last longer with milder affects. Adipex effects last between 10-12 hours. At one time it was also manufactured under the name Fastin but in 1998 it was withdrawn from market by it manufacturer, SK-Beecham. It is also available as a generic just named phentermine.

These diet pills are available in three forms, tablets, capsules, and resin capsules. They should be taken once a day prior to breakfast, on an empty stomach. Do not take late in the day as it does act like a stimulant and may disrupt your normal sleeping patterns. Do not break, crush or chew tablets.

Most patients start out with an average dose of 30mgs a day, but since there is no standard dose for Phentermine diet pills, consult your doctor before you begin taking them. Children under the age of 16 should not take it.

It is generally well tolerated by most people when used responsively. It is now available online, giving you anonymity for your purchase. It accounts for 50% of all prescribed appetite suppressants.

If you have certain health conditions, such as Glaucoma or high blood pressure you should consult your doctor before you begin. Do not mix with other weight loss diet pills. Although it is recommended for a short-term treatment, six to twelve weeks. It has also been shown in studies to remain effective in a 36-week trial.

Phentermine's success as weight loss supplement is due, in part, to the fact that it has been approved by the FDA longer than any other appetite suppressant drug, it is also cheaper. This diet pill is usually administered to the severely obese. It is recommended for people with a body mass index of 28 or higher.

As with any prescription drugs there may be side effects including but not limited to increased alertness or heart rate. The most common side effects like, dry mouth, blurred vision and sleeplessness usually only occur the within the first few days of beginning the medication while your body adjust to the medication. Never take a higher dose than prescribed by your doctor, as it could become habit forming.

However, remember that in order to succeed with any healthy weight loss program, it is recommended that you eat a well balanced diet and exercise.