There has been alot of hype and talk about Phentermine as the bes diet pill in the market. However, before taking the drug, it is important to understand some basic facts.

History of Phentermine -
In 1959 phentermine first received approval from the FDA as an appetite suppressing drug. Phentermine hydrochloride then became available in the early 1970s. It was previously sold as Fastin from King Pharmaceuticals for SmithKline Beecham, however in 1998 it was removed from the market. Medeva Pharmaceuticals sells the name brand of phentermine called Ionamin and Gate Pharmaceuticals sells it as Adipex-P. Phentermine is also currently sold as a generic. Since the drug was approved in 1959 there have been almost no clinical studies performed. The most recent study was in 1990 which combined phentermine with fenfluramine or dexfenfluramine and became known as Fen-Phen.

In 1997 after 24 cases of heart valve disease in Fen-Phen users, fenfluramine and dexfenfluramine were voluntarily taken off the market at the request of the FDA. Studies later proved that nearly 30% of people taking fenfluramine or dexfenfluramine had abnormal valve findings. The FDA did not ask manufacturers to remove phentermine from the market.

Phentermine is still available by itself in most countries, including the U.S. However, because it is similar to amphetamines, it is classified as a controlled substance in many countries. Internationally, phentermine is a schedule IV drug under the Convention on Psychotropic Substances. In the United States, it is classified as a Schedule IV controlled substance under the Controlled Substances Act.

What is phentermine?
Phentermine is a class of drugs called anorectics which decrease appetite by possibly changing brain levels of neurotransmitters associated with satiety. Phentermine is a stimulant that is similar to an amphetamine

• Phentermine Hydrochloride Oral tablet come in different commercial trade names:
  Adipex P (Immediate release)
  Anoxine-AM
  Ionamin (Slow Release Resin, Australia, discontinued in the US)
  Duromine (Slow Release Resin, New Zealand, Australia & South Africa)
  Fastin
  Mirapront
  Obephen
  Obermine
  Obestin-30
  Phentrol
  Phenterex
  Phentromin
  Pro-Fast SA
  Redusa
  Panbesy
  Phentermine Trenker
  Obenix
  Oby-Trim
  Teramine
  Zantryl
  Sinpet (MX)
  Supremin (PH)
  Umine (NZ)
  Weltmine (KP)

How does Phentermine work?
Phentermine stimulates nerves to release particular neurotransmitter called catecholamine. These include dopamine, epinephrine, (adrenaline) norepinephrine (noradrenaline). The increased levels of these chemicals appear to decrease the sense of hunger. Neurotransmitters are chemicals used to relay signal/messages in the brain.

These neurotransmitter eliminate the sense of hunger by putting your body in a small extent of “fight or flee’. This is the state your body takes when faced with danger. As you know if you see a car coming to hit you, you will not be aware of any hunger. Phentermine and other similar weight loss drugs like sibutramine and fenfluramine tend to mimic this state of “flight or flee” to some extent with their effect on neurotransmitters.

With the continued use of phentermine however, the effect of depressed appetite tend to wear off after a few weeks. This is why it is recommended for short term treatment. Some studies point to the possibility that this drug tolerance that results to reduced effect varies with individuals. One study has show phentermine to be still effective in a 3 year trial.

What is Phentermine used for?

It is a prescription weight loss pill that is used together with a Phentermine is used togther with diet and exercise to treat obesity (overweight) in people with risk factors such as high blood pressure, high cholesterol, or diabetes.

Phentermine may also be used for other purposes not listed in this medication guide.

What other information must I give my healthcare provider before taking Phentermine?

Taking phentermine together with other diet medications such as fenfluramine (Phen-Fen) or dexfenfluramine (Redux) can cause a rare fatal lung disorder called pulmonary hypertension. Do not take phentermine with any other diet medications without your doctor’s advice.

Do not take this medicine with any of the following medications:
•duloxetine
•MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
•medicines for colds or breathing difficulties like pseudoephedrine or phenylephrine
•procarbazine
•sibutramine
•SSRIs like citalopram, escitalopram, fluoxetine, fluvoxamine, paroxetine, and sertraline
•stimulants like dexmethylphenidate, methylphenidate or modafinil
•venlafaxine

This medicine may also interact with the following medications:
•medicines for diabetes

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

Tell your healthcare provider if you have any of these conditions:
•agitation
•glaucoma
•heart disease
•high blood pressure
•history of substance abuse
•lung disease called Primary Pulmonary Hypertension (PPH)
•thyroid disease
•an unusual or allergic reaction to phentermine, other medicines, foods, dyes, or preservatives
•pregnant or trying to get pregnant
•breast-feeding
If you have any of these conditions, you may need a dose adjustment or special tests during treatment.

What are some side effects of Phentermine?

What side effects may I notice from receiving this medicine?

Side effects that you should report to your doctor or health care professional as soon as possible:
•chest pain, palpitations
•depression or severe changes in mood
•increased blood pressure
•irritability
•nervousness or restlessness
•severe dizziness
•shortness of breath
•problems urinating
•unusual swelling of the legs
•vomiting

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
•blurred vision or other eye problems
•changes in sexual ability or desire
•constipation or diarrhea
•difficulty sleeping
•dry mouth or unpleasant taste
•headache
•nausea

Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may increase dizziness and drowsiness. Avoid alcoholic drinks.

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Other precautions:

You may have withdrawal symptoms, such as depression and extreme tiredness, when you stop using phentermine after a long period of use. Do not stop using phentermine suddenly without first talking to your doctor. You may need to use less and less before you stop the medication completely.

It is not known whether phentermine will harm an unborn baby. Do not take phentermine without telling your doctor if you are pregnant. It is also not known whether phentermine passes into breast milk or if it could harm a nursing baby. Do not take phentermine without telling your doctor if you are breast-feeding a baby. Do not give this medication to anyone younger than 16 years old without the advice of a doctor. Phentermine may be habit-forming and should be used only by the person it was prescribed for. Phentermine should never be shared with another person, especially someone who has a history of drug abuse or addiction. Keep the medication in a secure place where others cannot get to it.

How should I use this medicine?

Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. This medicine is usually taken 30 minutes before or 1 to 2 hours after breakfast. Avoid taking this medicine in the evening. It may interfere with sleep. Take your doses at regular intervals. Do not take your medicine more often than directed.

Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.

What if I miss a dose?
If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

Remember to buy drugs from reliable sources. It is not advisable to buy phentermine online without a prescription. Do not rely on the packaging or appearance of the pills, as you have no evidence that the pills contain the registered ingredients at the correct dosage and purity that is mandated by the marketing authorities. Problems with the quality of cheap phentermine ordered online and delivered to your doorstap overnight is more common than you think. You really do pay for what you get and many cases of fraud go undetected until death occurs. So better to be safe than sorry.

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