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Frequently Asked Questions



About Phentermine

What do Phentermine capsules or tablets do?

How do you know which dosage to start off with?

Does Phentermine work for long term use, and how long should I take the medication for?

How long will Phentermine remain in my body for after I stop taking it?

If taking it for a long period of time, will it cause problems to some of my major organs?

What are the active ingredients in the medications?

Does Phentermine contain "Ephedra"?

What side effects should I expect that are normal within the first week of using the medication?

Is this medication better than using, i.e., hydroxycut, metabolife, and body solutions, and if so, why?

Who should use Phentermine?

What is the difference between the yellow and the blue Phentermine capsules?

What is Fastin®?

What is Adipex®?

What is Ionamin®?

What is the difference between Ionamin and Adipex?

May I take Phentermine and Xenical at the same time?

What is Phen-Pro?

Is Phentermine an Amphetamine?

Will Phentermine show as a positive result to a urine drug test?

What is Fen-Phen (or Phen-Fen)?

What should my doctor know before I begin Phentermine treatment?

I can't find the Phentermine that I take in your pictures. Why?

Order Phentermine Online

Can I purchase Phentermine online?

Is it safe to order Phentermine (or other medications) for U.S. shipment from overseas pharmacies?

I do not live in the U.S. Can I order Phentermine (or other medications) through your site?

About This Site

Is it free to use this site?

Does Phentermine.com belong to a Pharmaceutical company?

How do you manage my privacy?

Why do you picture diet drugs other than Phentermine?

Chat Rooms

Why did you choose a chat application using Java and not HTML?

How can I organize chats?

How can I change the icons?

Which web browser(s) doyou recommend for running the DigiChat Client applet?

Does DigiChat run under America Online?

What is a Java Virtual Machine?

I use Windows XP and cannot access your chat rooms. What can I do?

Generic vs. Brand

What are the brand names for phentermine?

The following is a list of frequently asked questions concerning generic medication:

Is there a difference in ingredients between a generic and a brand-name product?

Are generics safe for children, adults and the elderly?

Does the government monitor generics as carefully as it does brand names?

Does every drug have a generic version?

Why do generics cost much less?



About Phentermine

What do Phentermine capsules or tablets do?

Phentermine is an appetite suppressant used for the short-term treatment of obesity. When used in conjunction with diet, exercise, and behavior therapy, Phentermine may help you to lose weight while you are learning new ways to eat and to exercise.

For further information on Phentermine, please visit our Overview section.

How do you know which dosage to start off with?

It is best to use this drug under a doctor's care. The average dose is 30mgs/day. If you are a new user, buy a low number of pills as a test, and start with the lowest dosage.

Does Phentermine work for long term use, and how long should I take the medication for?

Phentermine is approved for the short-term treatment (6-12 weeks) of obesity. To continue losing weight and prevent its return, you must develop and continue on a long-term basis - good dietary, exercise, and behavioral habits.

Few studies have been conducted concerning the long-term use of Phentermine. The National Institute of Health (NIH) has conducted a comparison of long-term studies of diet medications.

How long will Phentermine remain in my body for after I stop taking it?

Currently, no clinical study is available that measures the length of time that Phentermine will stay in your body after you stop treatment.

If taking it for a long period of time, will it cause problems to some of my major organs?

Phentermine is prescribed for short term treatment of obesity; therefore there are no clinical findings of the long term effects of this drug.

What are the active ingredients in the medications?

Phentermine Hydrochloride.

Does Phentermine contain "Ephedra"?

No, the only active ingredient is Phentermine Hydrochloride. Ephedra is a completely different chemical substance.

What side effects should I expect that are normal within the first week of using the medication?

Blurred vision, dry mouth, sleeplessness, irritability, stomach upset or constipation may occur the first few days as your body adjusts to the medication. The main advantage of phentermine is that it suppresses the appetite; however, the drug also elevates the heart rate and blood pressure.

Is this medication better than using, i.e., hydroxycut, metabolife, and body solutions, and if so, why?

This really depends on your medical history, and how your body reacts to the different medications mentioned, and if the medication is most suited to your needs. Phentermine should NOT be taken if you have any of the following conditions: heart disease, high blood pressure, glaucoma, thyroid problems, anxiety disorder, diabetes, epilepsy or any other seizure disorder. Do not take Phentermine if you are taking monoamine oxidase inhibitors (MAOI) to treat depression. Also, if you are pregnant or nursing, talk to your doctor about the potential risks involved with taking Phentermine.

The success of Phentermine as a weight loss drug is probably due to the fact that it is one of the oldest FDA approved weight loss drugs in the market, and because it is cheaper than other diet pills. Phentermine pills' advantages are seen mostly among those who suffer from severe obesity. This medication is administered primarily to those who have followed healthy eating and exercise regimens, yet cannot get to a healthy weight. This pill can be the answer for these people.

Another one of Phentermine pill advantages is that it is now available online. Ordering online is secure, confidential, and quick.

Taking Phentermine, along with eating and exercising sensibly, can be the answer for those who suffer from obesity.

Who should use Phentermine?

Phentermine is recommended for people that have a body mass index (BMI) of 28 or more. It is only intended for those with major weight problems.

What is the difference between the yellow and the blue Phentermine capsules?

The yellow phentermine 30mg capsules and the blue Phentermine 30 mg capsules act the same. Blue Phentermine and Yellow Phentermine both have the same active ingredient (i.e. Phentermine Hydrochloride).

Both of these capsules are manufactured by Eon Labs. The blue/white version is a generic for Fastin and the yellow is just a generic phentermine. The ingredients are the same. The only real differences are the aspect (color and powder vs. little pellets) and the price.

Please note that the yellow capsules are not a generic equivalent for Ionamin. There is no generic equivalent for Ionamin, which is the time released resin form of Phentermine.

As for the 15 mg capsules, they are simply a lower dosage form of Phentermine that is manufactured by Eon Labs.

The 37.5 mg Phentermine is a generic for Adipex-P that is manufactured by Purepac. The only difference between the brand name (Adipex-P, manufactured by Gate Pharma) and the generic is price.

For a more technical explanation, please contact the manufacturers Eon Labs and Purepac.

What is Fastin®?

Fastin® was the brand name of Phentermine produced by King Pharmaceuticals for SmithKline Beecham. In December 1998, SK-Beecham withdrew Fastin® from the market. Since Fastin® is no longer produced and sold, it is not included in our Pictures of the Phentermine section.

What is Adipex®?

Adipex® is the brand name of Phentermine produced by Gate Pharmaceuticals. Please click here to view pictures and learn more about Adipex®.

What is Ionamin®?

Ionamin® is the brand name of Phentermine marketed by Celltech. Ionamin® capsules use a special delivery system, known as resin matrix, to deliver Phentermine. Although there are other Phentermine products on the market, none has this resin matrix. Please click here to view pictures and learn more about Ionamin®.

What's the difference between Ionamin and Adipex?

Ionamin is the timed-release resin form of Phentermine and Adipex is the brand name for Phentermine Hydrochloride. Ionamin's timed-release form means that this tablet lasts longer, but with a milder effect, while Adipex is said to last 10-12 hours. However, the differences between these two are subjective.

May I take Phentermine and Xenical at the same time?

No official clinical study has been conducted on the use of Phentermine in conjunction with Xenical. Prior to taking any prescription medicine, please inform your doctor or healthcare professional of your complete medical history, including any other medicines you may be taking (both prescription and non-prescription). Based on your medical history and any medications you are currently taking, your doctor will determine if you may safely take Phentermine and Xenical.

What is Phen-Pro?

"Phen-Pro" is the combination (cocktail) of Phentermine (the "Phen") and a low dosage of Prozac (the "Pro"). Any one of the following antidepressants: Zoloft, Celexa, Luvox, Trazadone or Effexor may be used in lieu of Prozac.

The use of the antidepressant in the Phen-Pro cocktail is unrelated to depression. The cocktail is necessary because the effects of Phentermine, when used alone, lessen over time. The Phen-Pro cocktail enables Phentermine to work better and for a longer period of time.

Phen-Pro is considered an "off-label" use, meaning that the FDA, who often voice concerns regarding the mixing/combining of medications, does not approve it. However, once the agency has approved a drug, doctors may prescribe it at will.

The combination of Phentermine and Prozac does not appear to cause the problems that resulted from the usage of Fen-Phen.

Is Phentermine an Amphetamine?

No, Phentermine is not an Amphetamine. Phentermine is, however, similar chemically to the Amphetamines. In the diagram below, we have reproduced the molecular structures of Phentermine, Methamphetamine and Amphetamine.



The three molecules are chemically similar, but are not identical.

Will Phentermine show as a positive result to a urine drug test?

As Phentermine is similar chemically to Amphetamines, it may cause a positive result in urine screening tests for Amphetamines.

What is Fen-Phen (or Phen-Fen)?

Fen-Phen is the combination of Fenfluramine or Pondimin (the "Fen") and Phentermine (the "Phen"). Fenfluramine and Phentermine are prescription medications used as appetite suppressants for the short-term (a few weeks) management of obesity.

Phentermine received FDA approval in 1959 and Fenfluramine in 1973. Together, the two medications produced a powerful diet drug. The FDA had never approved the Fen-Phen combination, but once the agency has approved a drug, doctors may prescribe it at will.

Phentermine has also been used in combination with Dexfenfluramine ("Dexfen-Phen"). Dexfenfluramine (or Redux) was approved in 1996 for use as an appetite suppressant in the management of obesity.

In 1992, Dr. Michael Weintraub of the University of Rochester and several colleagues published a study showing Fen-Phen as far more effective than dieting or exercise in reducing the weight of the chronically obese. Initially, Fen-Phen seemed to be without immediate side effects.

Soon, Fen-Phen was on the market. In just a short time, Fen-Phen became a national sensation, with 6.6 million prescriptions in 1996.

Dexfen-Phen - The combination of Redux or Dexfenfluramine - a more refined compound that, like Fen-Phen, affects seratonin levels, but with fewer side effects than Fenfluramine - and Phentermine also became a sensation.

Unfortunately, neither combination was tested for safety... By the summer of 1997, the Food and Drug Administration (FDA) found 24 cases of heart-valve deterioration in women who had taken the Fen-Phen combination. Throughout the summer, the FDA received additional reports of heart disease, including reports from patients who had taken only Fenfluramine or Dexfenfluramine.

In September 1997, The FDA requested drug manufacturers to voluntarily withdraw Fenfluramine and Dexfenfluramine. The FDA also recommended that patients using either Fenfluramine or Dexfenfluramine stop doing so. To read the FDA statement regarding the withdrawals, please click here.

The FDA did NOT, however, request the withdrawal of the third drug involved in the cocktails, Phentermine.

What should my doctor know before I begin Phentermine treatment?

Prior to beginning any prescription medicine, you should inform your doctor of your complete medical history, including medical problems and any other medications that you are taking (both prescription and non-prescription).

Please visit What to tell the Doctor PRIOR to taking Phentermine and Other Medicines in our Overview section for a detailed list of medical problems/conditions and medicines to inform your doctor.

I can't find the Phentermine that I take in your pictures. Why?

Only pictures of the most common Phentermine pills for the US market are pictured on the site. We have not included pictures of Phentermine available abroad, nor Phentermine that is no longer produced.

Our Media department has taken the pictures of Phentermine displayed on this site.



Order Phentermine Online

Can I purchase Phentermine online?

Yes, Phentermine (and other prescription medications) may be ordered online from either an online pharmacy or an online clinic. On this site you will find a section to order Phentermine. These legitimate online pharmacies advertise on Phentermine.com but are not related to Phentermine.com. Phentermine.com does not hold any information regarding orders nor is it responsible for purchases made through these websites.

Is it safe to order Phentermine (or other medications) for U.S. shipment from overseas pharmacies?

The U.S FDA (Food and Drug Administration) cannot guarantee the origin and the quality of all medications produced and sold outside U.S. borders. We therefore recommend that you revise the online pharmacy you are thinking of buying from before purchasing, to be sure that the physician, pharmacy and medication are approved and licensed.

I do not live in the U.S. Can I order Phentermine (or other medications) through your site?

Some of the online pharmacies advertised on this site are international; however orders are revised by a U.S licensed physician and are FDA approved. Orders are shipped from European pharmacies and depending on the shipping address and method, can take up to twenty business days.

We recommend that you familiarize yourself with your country's regulations regarding the importation of medications for personal use.



About This Site

Is it free to use this site?

Yes. So, this just gives you another excuse to keep coming back!

Does Phentermine.com belong to a Pharmaceutical company?

No, Phentermine.com is provided by Internet Pharma Promotions Ltd, a UK based company dedicated to eHealthCare. The website, however, is operated and maintained by Anakena.com's Technical Department. Anakena.com is based in Barcelona, Spain.

How do you manage my privacy?

Phentermine.com is dedicated to protecting your privacy. The integrated on-line ordering system of Phentermine.com uses the latest, most advanced Secure Encryption Technology. All personal and credit card information is submitted with the highest level of security and precautions. The system has safeguards in place to protect against credit card fraud. Any person attempting the fraudulent use of a credit card will be reported. All information furnished is legally protected under doctor-patient privilege laws. Please click here for the Phentermine.com Privacy Policy.

Why do you picture diet drugs other than Phentermine?

We have received many questions regarding other diet medications such as Bontril or Xenical. For this reason, we include pictures of other diet medications, information about their manufacturers, and links to their respective official website.



Chat Rooms

Why did you choose a chat application using Java and not HTML?

Java-based chat rooms are much faster than the ones using only HTML. In particular, the refresh of the screen is much better. We want you to really enjoy your chat experience, therefore we have chosen the best Java chat program (DIGICHAT) available on the market today.

DigiChat is also used by Lucent Technologies, Boeing Aerospace, Yupi.com, CDNow.com, Ernst & Young, and Symantec.

How can I organize chats?

With our chat room coordination forum in the forum section of this site, you can coordinate organized chats.

How can I change the icons?

In the chat rooms, choose the 'settings' button and pick up the icon/s you want.

Which web browser(s) do you recommend for running the DigiChat Client applet?

For maximum speed and compatibility with the Client applet, we recommend Netscape 4.0 or Internet Explorer 4.0 for Windows, and Internet Explorer 4.5 or later for Macintosh with MRJ 2.1 or later. You may use Netscape 4.0 for Macintosh, however, these browsers exhibit poor Java performance.

Does DigiChat run under America Online?

Yes. However, it may be necessary to access DigiChat from an external browser, such as Microsoft Internet Explorer or Netscape Navigator/Communicator, rather than the built in AOL web browser. This is due to apparent bugs in AOL 4.0 and earlier which cause some Java applets, such as DigiChat, to redraw improperly. This bug appears to affect Windows 95/NT and Macintosh, though Windows 98 appears to be unaffected.

What is a Java Virtual Machine?

A Java Virtual Machine (JVM or VM) is the software that allows you to run Java applets or applications, such as DigiChat, on your machine. Most newer browsers have a JVM built in to run applets, such as the DigiChat client.

I use Windows XP and cannot access your chat rooms. What can I do?

This is a relatively new occurrence that people are experiencing. The Java Virtual Machine for Windows XP is no longer provided by Microsoft; it may be downloaded directly from Sun Microsystems' web site. Please click here to download.



Generic vs. Brand

What are the brand names for phentermine?

The brand names for Phentermine are Ionamin® and Adipex-P®. Didrex® is the brand name for benzphetamine, which is the strongest weight loss medication (out of all the weight loss medications mentioned, it is said to be the closest to amphetamine, with a possible greater abuse potential).

The following is a list of frequently asked questions concerning generic medication:

A generic drug is one which is identified by its official chemical name rather than an advertised brand name. The term has also come to mean a drug that has been introduced onto the market, usually after the patent on the brand-name drug has expired, through an approval process known as an Abbreviated New Drug Application (ANDA). Generics available in the U.S. have the same active chemical composition and have been demonstrated bioequivalent, i.e., deemed by the Food and & Drug Administration (FDA) to produce the same effect on the body as their brand-name counterparts.

The following frequently asked questions and answers will help you better understand the benefits of generic drugs.

Is there a difference in ingredients between a generic and a brand-name product?

The active ingredients in the brand-name and generic products are the same. Both the brand-name and the generic versions must have the same potency, be available in the same dosage forms (i.e. tablet, liquid, injectable), be demonstrated safe and effective, and be manufactured under government-approved Good Manufacturing Practices (GMP). Significant differences in any of these areas would mean the generic drug would not be approved by the FDA, and therefore would not be available. Although the inactive ingredients such as fillers and dyes are allowed to be different, these ingredients should not affect the safety or efficacy of a drug in any way. In fact, brand-name as well as generic companies often change these inactive ingredients...with FDA approval, of course.

Are generics safe for children, adults and the elderly?

A generic is considered as safe as its brand-name alternative. No drug is allowed on the market unless it is proven to the satisfaction of the FDA that it meets the standards for safety, efficacy and proper manufacturing processes. In terms of drugs extensively used by children, three of the most commonly prescribed drugs in the U.S. are generic antibiotics: amoxicillin, erythromycin and penicillin VK. A similar situation exists with drugs commonly used by the elderly. Ibuprofen and hydrochlorothiazide are among the most widely-used generics; both are used to treat adult and elderly disorders such as arthritis and high blood pressure.

Does the government monitor generics as carefully as it does brand names?

Yes. It is the job of the FDA to inspect both brand-name and generic pharmaceutical manufacturers. The same rules of inspection apply to both. You can be assured that generic products available on the U.S. market today have undergone, and continue to undergo, strict review.

Does every drug have a generic version?

No. Generally, when brand-name drugs are first introduced, they are patent-protected for 17 years. During this time, only that one brand of drug is allowed on the market, unless the manufacturer decides to allow others. When the patent expires, other drug companies can then introduce competitive generic versions of the brand-name product, but only after they have been thoroughly tested and approved by the FDA through the process.

Why do generics cost much less?

On average, most generics are about half the price of the brand-name drug; some generics may cost up to two-thirds less than the brand-name version. There are several reasons why generic pharmaceuticals are almost always much less expensive than their brand-name counterparts. First, there is much less money spent advertising, promoting, marketing, researching and developing the generic version of a drug. Second, the profit margins of generic drugs are considerably less than those of their brand-name equivalents. Third, because there are usually several providers of a given generic, competitive pricing often occurs among different generic versions of the same brand-name product.

It should also be pointed out that the initial cost to develop a new drug is extremely high. It might take years for a company to recoup its research and development expenses. Thus, although a patent is issued to protect the investment, the research and development costs are sometimes included even though the patent has expired.