Wednesday, August 27, 2008

Phentermine

If you are wanting to loss some weight, try phentermine. It works by decreasing your appetite. This drug has many side effects so taking this needs good diet. I have read somewhere that phentermine stimulates the central nervous system which increases your heart rate and blood pressure and decreases your appetite. Phentermine is a drug under the amphetamine and phenethylamine class. Like many other prescription drug, it is a centrally acting drug. This means that it works in the brain by stimulating neuron bundles to release a particular group of neuotransmitters known as catecholamines. These include dopamine, epinephrine, norepeinephrine. The catecholamines excite the sympathetic part of the nervous system-the fight or flight response. In turn, it inhibits the hunger signal causing a appetite suppression.

Phentermine is a FDA approved substance to control appetite since 1959. FDA approved means that it is one of the most powerful appetite suppressants in the market that is still considered safe to use and well tolerated. Many research and clinical studies have proven this to be an effective weight loss substance when accompanied with diet and exercise. It is recommended for the consumer to closely monitor any possible side effects during the first few days of use.

Effectiveness and Use:

Studies have shown that phentermine causes a 10-15 % greater weight loss compared to a placebo in a double-blind study. Like most diet pills, its effectiveness will be greatest if accompanied by proper diet and exercise. It is most effective if taken once a day during a 3-4 week period.

It is best to take phentermine before 3pm due to the risk of insomnia. It is recommended to take phentermine on an empty stomach, usually before breakfast or 1-2 hours after breakfast.

Safety Issues:

* You should not take phentermine if you are also taking dexfenfluramine, fenfluramine, furazolidone, guanadrel, guanethidine, or have taken a monoamine oxidase inhibitor in the last 14 days.

* People with severe high blood pressure, an overactive thyroid, glaucoma, heart or blood vessel disease, or severe narrowing of the blood vessels should not take phentermine.

* Some people may have allergic reactions with any of the ingredients in phentermine.

* Phentermine should not be prescribed to women that are pregant or breastfeeding and should not be prescribed to children under the age of 16.

Possible Side Effects:

Generally, phentermine appears to be relatively well tolerated. Because it releases catecholamines, its possible side effects are simply the effects of having too much adrenaline and noradrenaline. Such side possible side effects are tachycardia (increased heart rate) and elevated blood pressure, but the incidence and magnitude of these appear to be less than with the amphetamines. The drug may increase blood pressure and heart rate. It may also cause dry mouth, constipation, diarrhea, restlessness, and insomnia.

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