
Phentermine, sold under the brand name Adipex-P, is a prescription weight-loss pill for people aged 17 and older. It is a norepinephrine and dopamine-releasing agent (NDRA) that suppresses appetite and aids in weight loss when combined with diet and exercise. Phentermine is typically taken by mouth once daily and should not be crushed, broken, or chewed. It is important to consult a healthcare professional before taking phentermine, as it may have side effects such as a faster heart rate and higher blood pressure, and it may interact with other medications.
| Characteristics | Values |
|---|---|
| Brand Names | Adipex, Adipex-P, Acxion, Duromine, Elvenir, Fastin, Ionamin, Lomaira, Panbesy, Qsymia, Razin, Redusa, Sentis, Suprenza, Terfamex, Atti-Plex P, Phentercot, Phentride, Pro-Fast |
| Usage | Taken by mouth once daily, typically in the morning |
| Effectiveness | Reduces appetite and aids weight loss |
| Side Effects | Faster heart rate, high blood pressure, trouble sleeping, abuse |
| Precautions | Not recommended for children, avoid alcohol, do not use with similar medicines or MAO inhibitors |
| Availability | Generic medication available, prescribed for individuals with BMI over 30 or over 27 with weight-related health conditions |
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What You'll Learn

Phentermine and Adipex are chemically similar
Phentermine is a medication used for weight reduction in patients with obesity. It is typically used in cases where individuals have been unable to lose weight through diet and exercise alone. Phentermine is a norepinephrine and dopamine-releasing agent (NDRA) and produces stimulant, rewarding, and appetite suppressant effects. It is available as a generic medication and is marketed under various brand names, including Adipex and Adipex-P.
Adipex and generic Phentermine are chemically similar, as they share the same active ingredient and chemical composition. They are both effective in reducing appetite and aiding in weight loss when combined with a healthy diet and regular exercise. Phentermine is typically taken by mouth once daily, usually in the morning, and is recommended for people aged 17 and older.
While Phentermine can be an effective diet pill, it is important to be aware of potential drug interactions and side effects. For example, it is recommended to avoid alcohol while taking Phentermine, as it can worsen side effects such as a faster heart rate, higher blood pressure, and trouble sleeping. Additionally, individuals should consult a healthcare professional before taking Phentermine to ensure it aligns with their health goals and objectives.
Phentermine is often a valuable component of a holistic weight reduction strategy, which may include a doctor-approved regimen of exercise, behaviour modification, and a calorie-restricted diet. It is important to note that weight loss drugs are generally prescribed for individuals with a BMI over 30 or over 27 with weight-related health conditions.
In conclusion, Phentermine and Adipex are chemically similar and are both effective in treating obesity when combined with a healthy lifestyle. However, it is crucial to consult a healthcare provider before taking any weight loss medication to ensure it is safe and aligns with individual health goals.
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Phentermine is a norepinephrine and dopamine releasing agent
Phentermine, sold under the brand name Adipex-P, among other brand names, is a medication used for weight reduction in patients with obesity. It is a norepinephrine and dopamine releasing agent (NDRA) and produces stimulant, rewarding, and appetite suppressant effects. Phentermine is also a substrate of the monoamine transporters (MATs) and acts as a monoamine releasing agent (MRA). It also acts as a norepinephrine–dopamine reuptake inhibitor (NDRI) to a lesser extent.
Phentermine is chemically a substituted amphetamine and is related to amphetamine. It is commonly referred to as an atypical amphetamine. Phentermine was introduced in 1959 as part of an anti-obesity combination drug and was FDA approved for short-term weight management the same year. It became widely used in 1960. Phentermine is available as a generic medication and was the 149th most commonly prescribed medication in the United States in 2022, with more than 3 million prescriptions.
Phentermine is an indirect-acting sympathomimetic agent that acts by releasing noradrenaline from the presynaptic vesicles in the lateral hypothalamus. This increase in noradrenaline concentration in the synaptic cleft results in the stimulation of beta2-adrenergic receptors. Phentermine is classified as an indirect sympathomimetic due to the increase in the level of norepinephrine, dopamine, and its indirect effect on serotonin. Phentermine also appears to increase levels of norepinephrine, dopamine, and serotonin by inhibiting their reuptake and inhibiting monoamine oxidase enzymes.
Phentermine is taken by mouth once daily, typically in the morning. It is important to eat a healthy diet and maintain a regular exercise routine while taking phentermine. It is also recommended to avoid alcohol while taking phentermine as it may worsen side effects like faster heart rate, higher blood pressure, and trouble sleeping.
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Phentermine is not suitable for children
Phentermine, also known by the brand name Adipex-P, is a prescription weight loss pill for people aged 17 and older. It is a medication used to treat obesity in patients who have been unable to lose weight through diet and exercise alone. Phentermine is not suitable for children for several reasons:
Health Risks
Phentermine is a controlled substance that can be misused and lead to dependence. It has the potential for abuse and addiction, which can cause serious, life-threatening side effects such as hallucinations or psychotic-like behaviors. Misuse can also lead to overdose or even death.
Side Effects
The medication can cause various side effects, including a faster heart rate, high blood pressure, and trouble sleeping. These side effects can be particularly dangerous for children, as their bodies are still developing and may be more susceptible to the impacts of these changes.
Interaction with Other Medications
Phentermine may interact with other medications, including MAO inhibitors, benzphetamine, diethylpropion, and mazindol, among others. Taking Phentermine with these medications can cause serious, unwanted effects. Children may be more vulnerable to these interactions as they may not have fully developed metabolisms or the ability to process multiple medications simultaneously.
Dietary and Lifestyle Requirements
Phentermine is meant to be used in conjunction with a healthy diet and regular exercise. Children may not have the same level of understanding or ability to adhere to these requirements as adults. A balanced diet and exercise routine are crucial to mitigating the side effects of Phentermine and ensuring overall health.
Prescription Requirements
Phentermine is a prescription medication that requires careful consideration by a healthcare professional. It is not suitable for children as their healthcare needs differ from those of adults, and their conditions may require different treatments or approaches. It is imperative to consult a doctor or healthcare provider to determine the best course of action for a child's health needs.
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Phentermine should not be taken with certain other medications
Phentermine is a prescription weight loss pill for people aged 17 and older. It is an appetite suppressant that works best when combined with a healthy diet and regular exercise.
- Similar medications such as benzphetamine, diethylpropion, mazindol, phendimetrazine, Bontril®, or Didrex®.
- Monoamine oxidase inhibitors (MAOIs) such as isocarboxazid (Marplan®), phenelzine (Nardil®), selegiline (Eldepryl®), or tranylcypromine (Parnate®). Avoid phentermine if you have used an MAOI within the past 14 days.
- Beta-blockers, such as metoprolol (Lopressor, Toprol XL, etc.), atenolol (Tenormin), or propranolol (Inderal LA, Innopran XL), which are used for heart conditions or to reduce blood pressure.
- Alcohol—it can worsen side effects such as faster heart rate, higher blood pressure, and trouble sleeping.
- Any other medicine containing phentermine, such as phentermine/topiramate (Qsymia).
Additionally, phentermine should not be taken if you have certain heart problems (e.g., coronary artery disease, arrhythmia, uncontrolled high blood pressure), an overactive thyroid, glaucoma, or a history of substance use disorder. It is also not recommended during pregnancy or breastfeeding.
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Phentermine is most effective when combined with a healthy diet and regular exercise
Phentermine, sold under the brand name Adipex-P, is a medication used to treat obesity. It is a prescription weight-loss pill for people aged 17 and older. Phentermine is an appetite suppressant that works best when combined with a healthy diet and regular exercise.
Phentermine is a norepinephrine and dopamine-releasing agent (NDRA) and produces stimulant, rewarding, and appetite suppressant effects. It stimulates the central nervous system (nerves and brain), which increases heart rate and blood pressure. It is similar to a stimulant amphetamine and is, therefore, best used in the short term. Phentermine is a controlled substance due to its potential for abuse and dependence.
Healthcare professionals recommend making healthy lifestyle changes before taking weight loss medication. This includes eating a reduced-calorie diet, exercising, and managing stress. Extensive research has shown that these lifestyle habits are crucial to promoting better health and reducing the risk of disease.
It is important to carefully follow a doctor's instructions when taking phentermine. This includes maintaining a healthy diet and regular exercise routine. It is also recommended to avoid alcohol, as it can worsen side effects such as a faster heart rate and higher blood pressure.
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Frequently asked questions
Adipex, or Adipex-P, is a prescription weight loss pill for people aged 17 and older. It is an appetite suppressant that contains the same active compound as Phentermine.
Adipex is taken by mouth once daily, typically in the morning. It is recommended that users eat a healthy diet and maintain a regular exercise routine while taking Adipex for optimal results.
Common side effects include a faster heart rate, higher blood pressure, and trouble sleeping. It is recommended to avoid alcohol while taking Adipex as it can worsen these side effects.
Adipex is not recommended for children. Additionally, those taking similar medications such as benzphetamine, diethylpropion, mazindol, or phendimetrazine should not take Adipex. It is important to consult a healthcare professional before taking Adipex to ensure it is safe and suitable for you.











































