Phentermine is a prescription medication used for short-term weight management [1]. It is typically prescribed as part of a comprehensive weight loss program that includes diet and exercise [2].
How Does Phentermine Work?
Phentermine is a stimulant that affects the central nervous system [3]. It is believed to work by increasing levels of certain neurotransmitters in the brain, such as norepinephrine, which can suppress appetite and increase metabolism [4]. This can lead to a reduction in food intake and increased calorie burning [4].
What Conditions is Phentermine Prescribed For?
Phentermine is approved by the U.S. Food and Drug Administration (FDA) for the treatment of obesity in individuals with a body mass index (BMI) of 30 or greater, or a BMI of 27 or greater with other risk factors such as high blood pressure, diabetes, or high cholesterol [2]. It is intended for use in conjunction with a physician-approved weight reduction diet [2].
How Long is Phentermine Typically Prescribed?
Phentermine is generally prescribed for short-term use, typically for a few weeks to a few months [1][5]. This is because tolerance to its effects can develop over time, and it is not intended for long-term management of obesity [5].
What are the Potential Side Effects of Phentermine?
Common side effects of phentermine include dry mouth, restlessness, insomnia, constipation, and increased heart rate [6]. More serious side effects can include increased blood pressure, heart palpitations, and psychiatric symptoms [6]. Due to its stimulant properties and potential for dependence, phentermine is a controlled substance [7].
Are There Alternatives to Phentermine for Weight Loss?
Yes, several other prescription medications are available for weight loss, including lorcaserin, phentermine-topiramate, naltrexone-bupropion, liraglutide, and semaglutide [8]. Lifestyle modifications, such as dietary changes and increased physical activity, are also fundamental to effective weight management [2].
What is the Patent Status of Phentermine?
Phentermine has been available as a generic medication for many years, meaning its original patents have long expired [9]. Generic drugs are typically more affordable than their brand-name counterparts [9]. Information on drug patents and exclusivity can be found on DrugPatentWatch.com [10].
Who Manufactures Phentermine?
As phentermine is widely available as a generic, multiple pharmaceutical companies manufacture it. Common generic versions are available from manufacturers like Teva Pharmaceuticals and others [11].
What Are the Risks Associated with Phentermine Use?
Phentermine carries risks, especially for individuals with pre-existing cardiovascular conditions, uncontrolled hypertension, or a history of substance abuse [6]. Its stimulant nature can exacerbate these conditions [6]. The potential for dependence and abuse also requires careful monitoring by a healthcare provider [7].
Sources:
[1] https://www.webmd.com/drugs/2/drug-2013/phentermine-oral
[2] https://www.mayoclinic.org/drugs-supplements/phentermine-oral-route/proper-use/dr-20065289
[3] https://medlineplus.gov/druginfo/meds/a684017.html
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2840955/
[5] https://www.drugs.com/phentermine.html
[6] https://www.rxlist.com/phentermine-side-effects-drug-center.htm
[7] https://www.dea.gov/drug-scheduling
[8] https://www.niddk.nih.gov/health-information/weight-management/adult-weight-loss-medications
[9] https://www.drugpatentwatch.com/
[10] https://www.drugpatentwatch.com/about-us
[11] https://www.goodrx.com/phentermine