What is Phentermine Used For
Phentermine is a prescription medication used for short-term weight loss in individuals struggling with obesity. It is an appetite suppressant that affects the central nervous system, helping to reduce hunger and promote weight loss when combined with diet and exercise. Phentermine is typically prescribed for a few weeks and is not intended for long-term use due to potential side effects and dependency risks.
Drug Name: |
Phentermine (Adipex) |
Tablet Strength: |
37.5 mg pills |
Best Price: |
$3.99 |
Where to buy? |
Contact Our Pharmacy |
Patients suffering from panick attacks, anxiety or depression may buy
xanax online with valid prescription.
Effectiveness and Weight Loss Results
Phentermine has been shown to be effective for weight loss, with studies indicating that users can lose 5%–10% of their body weight within 12 weeks when combined with a healthy diet and regular exercise. It works best as part of a comprehensive weight loss plan rather than as a standalone solution.
First Few Weeks (1–4 weeks)
Many users lose 5–10 lbs in the first month due to appetite suppression and reduced calorie intake.
3 Months (Typical Treatment Duration)
Studies show an average weight loss of 5–10% of initial body weight, which could be 15–30 lbs for someone starting at 200 lbs.
Long-Term Potential
Since Phentermine is for short-term use (usually up to 12 weeks), continued weight loss depends on maintaining healthy eating habits and exercise after stopping the medication.
Factors Affecting Results
Diet: A low-calorie, high-protein diet enhances weight loss.
Exercise: Regular cardio & strength training improve results.
Starting Weight: Heavier individuals may see more rapid initial weight loss.
Metabolism & Genetics: Some people lose weight faster than others.
Hydration & Sleep: Drinking water and getting enough sleep support metabolism.
Mechanism of Action
Phentermine works as an appetite suppressant by stimulating the central nervous system (CNS), similar to amphetamines. Its mechanism of action involves the following key processes:
Stimulation of Neurotransmitter Release
Phentermine increases the release of norepinephrine (NE), dopamine (DA), and serotonin (5-HT) in the brain. These neurotransmitters play a role in reducing hunger and increasing energy levels.
Norepinephrine (NE): Activates the "fight or flight" response, reducing appetite and increasing metabolism.
Dopamine (DA): Provides a sense of reward, which may help reduce food cravings.
Serotonin (5-HT): Contributes to feelings of satiety, making users feel full for longer.
Hypothalamic Action
Phentermine primarily acts on the hypothalamus, a brain region that regulates hunger and satiety. By increasing norepinephrine signaling in the hypothalamus, Phentermine tricks the brain into feeling full, leading to a reduced urge to eat.
Increased Energy Expenditure
In addition to appetite suppression, Phentermine slightly boosts thermogenesis, increasing the body's energy expenditure. This effect, although mild, contributes to overall weight loss.
Adrenergic System Activation
Phentermine stimulates the sympathetic nervous system, leading to increased heart rate and blood pressure. This response enhances alertness and energy but also contributes to some of its side effects, such as insomnia and jitteriness.
Who can Use Phentermine
Approved Candidates for Phentermine
Adults with Obesity (BMI ≥ 30): Phentermine is typically prescribed to individuals with a Body Mass Index (BMI) of 30 or higher.
Overweight Individuals (BMI ≥ 27) with Health Conditions: Those with a BMI of 27 or higher may qualify if they have weight-related health conditions like:
Type 2 Diabetes
High Blood Pressure (Hypertension)
High Cholesterol (Dyslipidemia)
Who Should NOT Use Phentermine?
Phentermine is a stimulant and can pose risks for certain individuals. You should avoid Phentermine if you have:
Heart disease (e.g., coronary artery disease, heart failure)
Uncontrolled high blood pressure
Hyperthyroidism (Overactive thyroid)
Glaucoma
History of drug abuse or addiction (Phentermine is a controlled substance)
Severe anxiety or mental health conditions (can worsen symptoms)
Pregnancy or breastfeeding (unsafe for use)
Use of MAO inhibitors in the past 14 days (can cause dangerous interactions)
How to Take Safely
Standard Dosage: Typically 15 mg, 30 mg, or 37.5 mg once daily.
Timing: Take in the morning, preferably before breakfast or 1–2 hours after breakfast to minimize the risk of insomnia.
With or Without Food: Can be taken with or without food, but always follow your doctor's instructions.
Avoid Late Intake: Do not take Phentermine in the afternoon or evening, as it can cause insomnia.
Important Considerations
Swallow Whole: Do not crush or chew the tablet/capsule.
Stay Hydrated: Drink plenty of water to reduce side effects like dry mouth.
Short-Term Use: Usually prescribed for a few weeks (up to 12 weeks max) to avoid dependency.
Do Not Double Dose: If you miss a dose, skip it and take the next one at the scheduled time.
Side Effects
Common Side Effects (Mild & Temporary).
These side effects often occur when starting Phentermine and may lessen over time:
Dry mouth (most common) – Drink plenty of water.
Insomnia – Take Phentermine in the morning to reduce sleep issues.
Increased heart rate – A slight rise in pulse is normal but should be monitored.
Nervousness or restlessness – Feels like mild anxiety or jitteriness.
Headache – Usually temporary.
Dizziness – Can happen due to dehydration or lower food intake.
Constipation – Stay hydrated and eat fiber-rich foods.
Serious Side Effects (Rare but Require Medical Attention)
Seek immediate medical help if you experience:
Severe chest pain or irregular heartbeat
Shortness of breath or swelling in legs (signs of heart issues)
Extreme mood changes, aggression, or depression
Uncontrolled high blood pressure
Severe allergic reactions (rash, swelling, difficulty breathing)
Long-Term Risks
Since Phentermine is a stimulant, long-term use can lead to:
Tolerance & Dependence – The body may adapt, reducing effectiveness.
Potential Withdrawal Symptoms – If stopped suddenly, some people experience fatigue, depression, or weight regain.
Heart Issues – Prolonged use may increase the risk of cardiovascular problems.
How to Minimize Side Effects
Take Phentermine early in the day to avoid insomnia.
Stay hydrated to prevent dry mouth and dizziness.
Eat small, nutritious meals to avoid nausea or headaches.
Avoid caffeine & stimulants to reduce jitteriness.
Follow your doctor’s instructions carefully.