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Phentermine Diet Pills

Phentermine, pronounced as FEN-ter-meen, is the generic name of the marketed diet pills Adipex-P, Zantryl, T-Diet and Oby-Cap. It has been around for decades in the market and is available as a prescription-only drug.

Phentermine – What is it?

Phentermine is both an appetite suppressant and a stimulant. It is similar to the family of drugs called amphetamines and it is because of this that it is classified as a controlled substance pill.

It is a short-term treatment pill to fight obesity, to be used side by side with dieting and exercising. With all these efforts put together, you should be able to quickly lose weight in a matter of weeks. Most of the time, phentermine is given to patients that badly need to lose weight, fast such as those with hypertension and diabetes.

Phentermine comes in a form of a pill that can be easily taken every day.

The History of Phentermine Will Surprise You Timeline Infogaphic

We’ve put together a detailed infographic that outlines the key dates pertaining to this remarkable weight loss medication.

Click the image to the right to view our infographic (all we ask is that you share this resource with others via a quick tweet).

What you must know about Phentermine

Before asking your doctor to give you phentermine, you should read through the important notices we have for you below.

First of all, you should NOT take phentermine with the following drugs:

  • Isocarboxazid (Marplan)
  • Selegiline (Emsam, Zelapar)
  • Phenelzine (Nardil)
  • Furazolidone (Furoxone)

And other MAO inhibitor drugs, especially in the last 14 days. If these drugs and phentermine meet in your system, it may lead to dangerous side effects.

You should also NOT take phentermine with other diet pills because it may trigger a very rare type of lung disorder called a pulmonary hypertension. This can be fatal at times so make sure that you do not mix it with other diet pills, specifically those with dexfenfluramine and fenfluramine.

A note about drinking alcohol. Phentermine can impair your thinking and alertness so you are advised not to drink phentermine with alcohol and most especially not drinking phentermine while driving.

Lastly, one of the main reasons why phentermine is a prescription-only drug is because it can be very addicting and habit-forming. The proper assessment by your doctor should be done to see if you are prone to drug addiction or if you have a history of drug dependency. You also need your doctor to tell you how to carefully wean off phentermine so that you will avoid withdrawal symptoms.

To help you monitor your progress with phentermine and to help you identify if it is indeed working on you, track your weight loss the day you started taking phentermine. Write a some sort of weight loss journal – what are the side effects you feel, is there a decrease in your appetite, how much weight you have lost so far etc.

Phentermine Precautions

This diet pill is not for everyone. There are certain types of people who must take extra care when taking phentermine. These are those with a history or a predisposition to develop:

  • Heart diseases and heart issues like hypertension
  • Coronary heart disease (having blockages in your arteries)
  • Thyroid issues (hyperthyroidism)
  • Glaucoma
  • History of drug allergies
  • History of drug dependency
  • Diabetes and other endocrine disorders

When it comes to pregnancy, it is classified as a category C. This means that there is no hard proof yet that the drug can seriously harm the unborn child. But this does not mean that it is 100% safe to take phentermine. The best way is to consult with your doctor if you are pregnant or planning on becoming pregnant.

You should not share your prescription of phentermine with others since they may require a different dosage than yours.

Dosage Information

Frequently asked questions regarding the dosage of phentermine. Click each question to reveal helpful tips.

How do you take phentermine?
Here are some tips on how you can take this diet pill while minimizing the possibility of experiencing side effects.

  • Take your phentermine as directed. Do not split, cut or chew the tablet. you should not double your dose, too. Just take it as directed.
  • Take phentermine upon waking up. This is to help you prevent bout of insomnia when you are about to go to sleep.
  • This is meant to be taken at a maximum of 8 week. Do not go over your prescription.
  • Take phentermine on an empty stomach for quick absorption to your blood stream.
  • Slowly wean off phentermine. Don’t abruptly stop taking it or else you are risking developing withdrawal symptoms.
    Observe if your body is reacting to the phentermine. You should be feeling the lack of appetite in just a few days of taking the pill.
How much phentermine is usually recommended per patient?
For adults, phentermine is usually given at 8 mg doses for 3 times a day. All of these doses must be taken at least 30 minutes from your meals for easy absorption into your stomach lining.
The dosage may vary depending on the amount of weight that you need to lose and your current weight. Sometimes, phentermine is also prescribed to obese children who need help in slimming down, fast.

You should note that phentermine MUST NOT be chewed, split or cut into pieces for easier swallowing. Take it like how you would take a regular pill – swallowing it whole. Why is this important? Because when you chew phentermine, you destroy the sustained-release mechanism of the pill and you may experience the side effects much worse than you usually should. This also does not balance the distribution of phentermine in your system.

What do I do if I miss a dose?
When this happens, take the missed dose the moment that you remember it. But if you are already a few hours away from your next dose, just skip the forgotten dose altogether. You should not take more than 1 dose of phentermine within 12 hours.
What are the signs of an overdose?
Below are the signs of an overdose. If you suspect that you overdosed, contact your attending physician immediately or go to the nearest emergency room as soon as possible.

  • Dehydration (dryness of skin, sunken eyes)
  • Hallucinations and heart palpitations
  • Diarrhea, intense stomach cramps and indigestion
  • Vomiting, nausea and intense mood swings
  • Seizures
  • Fainting

Do not take these symptoms for granted and go to the nearest hospital if you suspect a phentermine overdose.

What can I take with Phentermine?
You can take almost any type of food and drinks with Phentermine except for the following:

  • Alcoholic drinks (which will intensify its side effects
  • Other diet pills (may overdose)
  • Caffeinated drinks (can also aggravate side effects)

For more answers to your questions visit our FAQ

Phentermine Side Effects

What are the expected side effects of phentermine and how often do they occur? These are the typical side effects of phentermine:

  • Rapid pulse rate and heart palpitations
  • Chest pain
  • Swelling of the hands and feet
  • Irritability and at times, confusion
  • Compromised alertness
  • High blood pressure
  • Extreme mood swings
  • Constant feeling of anxiety and hyperactivity
  • Dry mouth
  • Insomnia
  • Changes in your libido and menstrual cycle (for the women)
  • Changes in personality
  • Vomiting, nausea and dizziness
  • Difficulty in breathing, tightness of the chest
  • Allergic reaction to phentermine, in the form of rashes and hives

Note that these are just the common side effects – please feel free to consult your doctor if you see other side effects while you are on phentermine. Each person reacts to a drug differently and some of these side effects may not manifest during your treatment while others may become visible.

Drug interactions

When taking phentermine, note that medications designed to treat hypertension, diabetes and depression may interact negatively with phentermine. Phentermine introduces new levels of hormones in your body so if you are undergoing hormonal treatment, let your physician know.

The same with daily supplements and vitamins – it is best to tell your physician if you are taking any type if supplement so that he or she can be aware of how to design your anti-obesity treatment.

All Phentermine reviews are welcome! Share yours below.

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One Response to Phentermine

  1. kim

    Is there a doctor in Corpus Christi, TX that prescribes phentermine? My sister in Oklahoma is taking it and she is have great results. I’d like to give it a try.


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