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Basic Drug Info
Drug Name:Phentermine Hydrochloride
Manufacturer:Qualitest Pharmaceuticals
Other Info:Manufactured for:QUALITEST PHARMACEUTICALSHuntsville, AL 358118181482R12/07-R2



Clinical Trials:


Indications and Usage

Phentermine hydrochloride is indicated as a short-term (a few weeks) adjunct in a regimen of weight reduction based on exercise, behavioral modification and caloric restriction in the management of exogenous obesity for patients with an initial body mass index ?30 kg/m2, or ?27 kg/m2 in the presence of other risk factors (e.g., hypertension, diabetes, hyperlipidemia).Below is a chart of Body Mass Index (BMI) based on various heights and weights.BMI is calculated by taking the patient's weight, in kilograms (kg), divided by the patient's height, in meters (m), squared.

Metric conversions are as follows: pounds ÷ 2.2 = kg, inches × 0.0254 = meters.The limited usefulness of agents of this class (see CLINICAL PHARMACOLOGY) should be measured against possible risk factors inherent in their use such as those described below.
Hypertensive disease -- Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.

Diabetes --

Diabetes Mellitus -- A heterogeneous group of disorders characterized by HYPERGLYCEMIA and GLUCOSE INTOLERANCE.

Diabetes Mellitus, Non-Insulin-Dependent -- subclass of diabetes mellitus that is not insulin responsive or dependent; characterized initially by insulin resistance and hyperinsulinemia and eventually by glucose intolerance, hyperglycemia, and overt diabetes; type II diabetes mellitus is no longer considered a disease exclusively found in adults; patients seldom develop ketosis but often exhibit obesity.

Hyperlipidemia -- excess of lipids in the blood.

Contraindications
Advanced arteriosclerosis, cardiovascular disease, moderate to severe hypertension, hyperthyroidism, known hypersensitivity or idiosyncrasy to the sympathomimetic amines, glaucoma.Agitated states.Patients with a history of drug abuse.During or within 14 days following the administration of monoamine oxidase inhibitors (hypertensive crises may result).
Arteriosclerosis -- Thickening and loss of elasticity of the walls of ARTERIES of all sizes. There are many forms classified by the types of lesions and arteries involved, such as ATHEROSCLEROSIS with fatty lesions in the ARTERIAL INTIMA of medium and large muscular arteries.

Cardiovascular Diseases -- Pathological conditions involving the CARDIOVASCULAR SYSTEM including the HEART; the BLOOD VESSELS; or the PERICARDIUM.

Hypertensive disease -- Persistently high systemic arterial BLOOD PRESSURE. Based on multiple readings (BLOOD PRESSURE DETERMINATION), hypertension is currently defined as when SYSTOLIC PRESSURE is consistently greater than 140 mm Hg or when DIASTOLIC PRESSURE is consistently 90 mm Hg or more.

Hyperthyroidism -- Hypersecretion of THYROID HORMONES from the THYROID GLAND. Elevated levels of thyroid hormones increase BASAL METABOLIC RATE.

Hypersensitivity -- Altered reactivity to an antigen, which can result in pathologic reactions upon subsequent exposure to that particular antigen.

Glaucoma -- An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed)

Hypertensive Crisis --

Warnings

Phentermine hydrochloride is indicated only as short-term monotherapy for the management of exogenous obesity.

The safety and efficacy of combination therapy with phentermine and any other drug products for weight loss, including selective serotonin reuptake inhibitors (e.g., fluoxetine, sertraline, fluvoxamine, paroxetine), have not been established.

Therefore, coadministration of these drug products for weight loss is not recommended.Primary Pulmonary Hypertension (PPH)—a rare, frequently fatal disease of the lungs—has been reported to occur in patients receiving a combination of phentermine with fenfluramine or dexfenfluramine.

The possibility of an association between PPH and the use of phentermine alone cannot be ruled out; there have been rare cases of PPH in patients who reportedly have taken phentermine alone.

The initial symptom of PPH is usually dyspnea.

Other initial symptoms include: angina pectoris, syncope or lower extremity edema.

Patients should be advised to report immediately any deterioration in exercise tolerance.

Treatment should be discontinued in patients who develop new, unexplained symptoms of dyspnea, angina pectoris, syncope or lower extremity edema.
Branded Drugs
The following US Branded drugs contain Phentermine Hydrochloride


ADIPEX-P -- TEVA PHARMACEUTICALS USA INC

FASTIN -- GLAXOSMITHKLINE

OBESTIN-30 -- FERNDALE LABORATORIES INC

OBY-TRIM -- SHIRE RICHWOOD INC

ONA-MAST -- MM MAST AND CO

TORA -- SOLVAY PHARMACEUTICALS


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