Phentermine is a widely prescribed weight loss pill and is prescribed more often than any of the top three weight loss pills currently on the United States pharmaceutical market. Its efficacy is short-term, but because it is the most cost-effective weight loss drug, it is the most widely prescribed.
Phentermine works as an appetite suppressant. Its mechanism is one that controls the release of certain appetite controlling chemicals in the brain. This drug is prescribed to patients with a body mass index of 27 or higher and who have failed to lose weight otherwise. A reasonable effort has to have been made to lose weight naturally before a doctor will prescribe any drug. Weight loss can only be achieved when using Phentermine if exercise and a healthy diet are incorporated as well. As with any of the top weight loss pills, there are side effects.
Some of the common side effects of this top weight loss pill are gastrointestinal upset, impotency, low libido, euphoria, insomnia and nervousness. Some of the more serious side effects that one should seek immediate medical attention for are allergic reactions, chest pain and other cardiac symptoms such as rapid heart rate and shortness of breath, strange behavior, tremor and edema of the feet and legs.
This top weight loss pill should not be used by women who are pregnant or nursing, cardiac patients, children, those with a history of drug abuse, or anyone taking any MAOI's. Other drug interactions are with dexfenfluramine, fenfluramine, furazolidone, fluoxetine (and other serotonin reuptake inhibitors, guanadrel or guanethidine.
Though Phentermine is the top weight loss pill prescribed, it is intended for short-term use. Tolerance occurs and the pill becomes ineffective after awhile. Proper diet and exercise is necessary to lose weight with Phentermine. Because of the short-term use of Phentermine, it is imperative that the patient is utilizing behavioral modification to achieve healthy habits in order to keep the weight off once the pill has become ineffective.
It is important to note that though Phentermine was once a part of another top weight loss pill, its predecessor Fen-phen also contained fenfluramine which is now contraindicated with the use of Phentermine. It was this combination that was deadly.
Overall, top weight loss pill or not, Phentermine should only be used under the advice and careful monitoring of a physician. It, like any other drug, carries with it side effects that should only be undertaken if the risk of not losing the weight is significant. It is certainly not a pill for a person wishing to lose a mere five to ten pounds. For those people, diet and exercise are the recommendation.