What is phentermine?

Medically Reviewed
Neha Singh
Assistant Team Lead - Health Coach
Phentermine tablet in a hand covered with glove

Phentermine is a prescription medication commonly used as a weight management aid. Classified as an appetite suppressant, it works by altering certain neurotransmitters in the brain, which helps decrease hunger and control cravings. Many people struggling with obesity consider phentermine pills and phentermine tablets as potential solutions in their weight-loss journey.

Phentermine is typically prescribed for individuals who have a body mass index (BMI) of 30 or higher, or for those who have a BMI of 27 or greater accompanied by weight-related health issues. Its primary function is to assist in weight loss by promoting a sense of fullness, thereby helping users adhere to diet and exercise routines more effectively. The medication is often recommended in conjunction with lifestyle changes, such as improved dietary habits and increased physical activity.

While phentermine can provide significant benefits, it is essential to consult with a healthcare professional before starting any regimen. They can evaluate your medical history and determine if phentermine is appropriate for you. Understanding how this medication works and its potential impact on weight management can empower individuals on their paths to healthier lifestyles.

How Phentermine Works?

  1. Stimulates the Sympathetic Nervous System: Increases the release of neurotransmitters (norepinephrine, dopamine, serotonin).

  2. Appetite Suppression: Reduces hunger and cravings by affecting the brain's appetite centers.

  3. Increased Energy: Boosts energy levels, potentially supporting more physical activity.

  4. Thermogenesis: May slightly increase calorie burning by raising body temperature.

  5. Reduces Caloric Intake: Helps individuals consume fewer calories, promoting weight loss.

Who Should Use Phentermine?

"Phentermine can be a valuable short-term aid in weight loss by suppressing appetite and increasing energy, but it should always be used under medical supervision to ensure safety and effectiveness, especially for those with underlying health conditions" recommends Health Coach Pooja Shinde (Msc. Nutrition, food science & technology — diabetes educator)

Benefits & Side Effects

Benefits of Phentermine:

  1. Appetite Suppression: Reduces hunger and cravings, making it easier to follow a reduced-calorie diet.

  2. Weight Loss: Helps promote weight loss by reducing calorie intake and increasing energy expenditure.

  3. Increased Energy: Boosts energy levels, which may encourage more physical activity.

  4. Improved Health Outcomes: For overweight or obese individuals, weight loss can lead to improvements in conditions like high blood pressure, diabetes, and cholesterol levels.

  5. Short-Term Use: Effective for quick, short-term weight loss when combined with diet and exercise.

Side Effects of Phentermine:

  1. Increased Heart Rate: Can lead to a faster heartbeat (tachycardia).

  2. Elevated Blood Pressure: May raise blood pressure, especially in people with hypertension.

  3. Nervousness/Anxiety: Some individuals may experience feelings of anxiety, restlessness, or irritability.

  4. Insomnia: Difficulty sleeping or disturbances in sleep patterns.

  5. Dry Mouth: Reduced saliva production, causing discomfort.

  6. Constipation: Gastrointestinal discomfort, including constipation.

  7. Dizziness: Feeling lightheaded or dizzy, especially when standing up quickly.

  8. Headaches: Common side effect, particularly when first starting the medication.

Precautions to be taken

  1. Consult a Healthcare Provider: Always speak with your doctor before starting Phentermine, especially if you have any underlying health conditions, such as heart disease, high blood pressure, or diabetes.

  1. Pre-existing Heart Conditions: Phentermine can increase heart rate and blood pressure. It should not be used if you have:

  1. Monitor Blood Pressure: Regularly check blood pressure as Phentermine can elevate it. If you have hypertension, your doctor may need to adjust your medication or provide alternative treatments.

  2. Avoid in Pregnancy or Breastfeeding: Phentermine is not safe for use during pregnancy or breastfeeding due to potential risks to the baby.

  3. Do Not Combine with Other Weight Loss Medications: Combining Phentermine with other weight loss drugs or stimulants can increase the risk of side effects, including heart problems.

  4. Avoid if You Have Mental Health Issues: Phentermine may cause or worsen anxiety, depression, or other mental health conditions. Talk to your doctor if you have a history of these conditions.

  5. Kidney or Liver Disease: Use caution if you have liver or kidney problems, as Phentermine may exacerbate these conditions.

Summary

Phentermine is a prescription medication used as an appetite suppressant to help with weight loss. It works by stimulating the central nervous system, which decreases hunger and increases energy levels. Phentermine is typically prescribed for individuals with a BMI of 30 or higher or 27 or higher with weight-related health issues, and is meant for short-term use in combination with diet and exercise.

Benefits include appetite suppression, weight loss, and increased energy, while side effects may include increased heart rate, elevated blood pressure, insomnia, dry mouth, and constipation. It should be used under the guidance of a healthcare provider, especially for those with heart issues or high blood pressure, and is not recommended during pregnancy or breastfeeding.

FAQs

  1. What is phentermine?
    Phentermine is a prescription medication that is used as an appetite suppressant to help people lose weight. It works by affecting neurotransmitters in the brain to decrease hunger.

  2. How does phentermine work?
    Phentermine stimulates the central nervous system, which can increase heart rate and blood pressure. This helps to reduce appetite and lead to weight loss when combined with a healthy diet and exercise.

  3. Who is a candidate for phentermine?
    Phentermine is typically prescribed for individuals who are obese or have weight-related medical conditions. It is not recommended for those who are pregnant, breastfeeding, or have a history of heart disease or substance abuse.

  4. What are the side effects of phentermine?
    Common side effects can include dry mouth, insomnia, constipation, and increased heart rate. It's important to discuss potential side effects with a healthcare provider.

  5. How long can I take phentermine?
    Phentermine is usually prescribed for short-term use, typically up to 12 weeks, as part of a broader weight loss plan. Long-term use is generally not recommended due to potential side effects and dependency issues.

 

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