Phentermine – Facts You Need To Know

Phentermine HCL (Hydrochloride) is a potent medicine and belongs to a group of drugs known as amphetamines.

Phentermine HydrochloridePhentermine HCL is a crystalline substance which acts as a psycho stimulant, has an effect on the nervous system and works by suppressing one’s appetite.

This weight loss drug swiftly achieved great popularity among dieters around the world.

It is one of the oldest prescription diet pills and it really has helped many overweight patients lose weight.

Phentermine HCL is a strictly prescription diet product.

It works as an appetite suppressant that affects one’s nervous system.

Just like other amphetamines Phentermine may be addictive, which is one of the main reasons why it’s a prohibited drug and is not available to buy online or without doctor prescription.

A Short History Of Phentermine

Launched in the early 1950′s, Phentermine dominated the diet pill market to such an extent that it was supposed to be used by 50% of those that took weight reduction drugs at that time.

It additionally acquired the approval of the FDA in 1959 [1] , but was really useful only for short term treatment because of its addictive nature.

When it was first launched as an appetite suppressant, it was well accepted for its abilities to help people lose weight, but, there weren’t much of scientific studies carried out on the drug and subsequently little was known of its safety.

It was much later within the 90′s that proper scientific tests had been carried out on the weight loss mixture known as Phen-fen.[2]

This combination of medicines had been around since the early 70’s but never had to go through approval by the FDA because phentermine and fenfluramine [3] were both separately approved by the FDA, and physicians didn’t need the regulatory to prescribe them together.

Phen-fen didn’t produce any instant side effects, but by the late 90’s people were beginning to report high occurrence of heart valve disorders and pulmonary hypertension. [4]

Because of that Fenfluramine and Dexfenfluramine were both banned by the FDA, while Phentermine stays available to this day, but only with the prescription and under the strict control of a doctor.

How Does Phentermine Work

If you want to know how this drug works, then you should take a look at the following information.

The main mission of this drug is to trigger particular body’s functions to help someone to lose weight.

Phentermine works with the chemicals in your body to suppress one’s appetite. One more benefit is that it increases metabolism and provides more energy.

It works through a central mechanism in the brain. It stimulates the hypothalamus (in charge for controlling appetite), and the release of some neurotransmitters.

These neurotransmitters, known as catecholamines [5] , activate your body to create so called fight or flight reaction. This reaction stops the hunger signals within the body, so you feel satiated and eat less.

It, therefore, works by blocking the receptors inside your brain which are linked with the feeling of being hungry.

Because of its action upon hypothalamus and central nervous system, it also usually makes the consumer feel more energetic and less tired.

But it also causes a variety of Phentermine side effects like dry mouth, anxiety, insomnia, to name few. Because of its addictive nature it may be used for a maximum of 12 weeks.

Also, many people may experience distressing withdrawal symptoms, so it is recommended to stop its use gradually.

Types Of Phentermine Tablets

You can find numerous types of Phentermine tablets and the difference between them is mainly the dosage and sometimes some other active ingredients.

When you want to use this drug it is essential to do your own examination to understand how it can help you or to learn what possible alternatives are.


People who want to try Duromine [6] must go to their doctor for a full medical history in order to make sure they are a good candidate for the drug.

It is manufactured by 3M and is offered in 3 different dose levels – 15mg, 30mg and 40mg. Duromine is only available in Australia and New Zealand.


Adipex-P [7] is a type of Phentermine tablets that are only available with a legal doctor’s prescription.

Doctor will decide on the right dosage for you considering your health situation. Adipex-P is manufactured by Gate Pharmaceuticals and comes in 37.5 mg doses.


Ionamin [8] is a diet pill that contains sustained release form of phentermine in a resin complex. It is manufactured by Celltech Pharmaceuticals and is available in 2 doses – 15mg and 30mg.

Just like previous two types of Phentermine tablets, Ionamin is only available with the valid doctor’s prescription.

There is also some other types of Phentermine tablets and the most prominent are Obenix, Obephen, Obermine, Obestin, Pro-Fast, Fastin, Phentamine, Phentride, T-Diet, Zantryl and some more.

All these types are able to cause numerous side effects like diarrhea, headache, dizziness, nervousness, insomnia and even some more dangerous.

Phentermine Side Effects

This report lists most of the Phentermine side effects, and if you are interested to know about them, then this is definitely worth reading.

Because it is chemically similar to amphetamine, Phentermine HCL may create various amphetamine-like side effects. Additionally, this drug may cause psychological addiction.

Only after a careful estimation by the doctor, this drug should be prescribed and used.

Frequent Phentermine Side Effects

Phentermine Side EffectsDry mouth (Xerostomia)
❌ Diarrhea
Upset stomach
❌ Headache
❌ Nervousness
❌ Nausea (or vomiting)

Less Frequent Phentermine Side Effects

❌ Hallucinations
❌ Restlessness
Stomach cramps
❌ Tremors
❌ Psychosis
Changes in libido

Uncommon and the most dangerous Phentermine side effects

Phentermine users should also be aware that there are some very dangerous and even life-threatening side effects that can happen.

Phentermine DangersBlue lips
❌ Chest pain
Problems with breathing
❌ A rapid heart rate
Extremely high blood pressure
❌ Cardiac valvular disease
❌ Pulmonary hypertension

Phentermine overdose

If you or someone you know takes a much larger dose than recommended, please phone a physician, 911, or the nearest poison control center immediately.

The symptoms of overdose may include restlessness, fever, fast breathing, dizziness, confusion, hallucinations, panic or paranoid, drowsiness, convulsions, unconsciousness, unusually fast or slow heart beat, headache, nausea/vomiting, diarrhea, stomach pain, pale or flushing, chest pain, sweating, muscle weakness, agitation, large pupils, or delusions.

Who should definitely stay away from Phentermine

Phentermine is not recommended for patients with certain conditions or medical histories, and may only be recommended with caution for others.

Please advise your physician of any of the following to ensure that your treatment is safe and effective.

Allergic reaction to Phentermine or other stimulant
❌ Heart disease
High or low blood pressure
❌ Hardening of the arteries or other blood vessel disease
Overactive thyroid
❌ Glaucoma
❌ Kidney disease
History of substance abuse
❌ Mental illness
Thyroid problems
❌ Depression
❌ Pregnancy

Adults Age 60 and Over – Adverse reactions may be more likely and more severe in older patients, especially when taken in combination with drugs that act on the central nervous system.

Alcohol – Alcohol may increase unwanted side effects of dizziness, therefore, it is advisable to limit alcohol use while taking Phentermine.

Breast Feeding – Use of Phentermine while breast-feeding is NOT recommended; it may pass into breast milk, causing unwanted effects in nursing babies. Please consult your physician for further information.

Diabetes – Phentermine may affect blood sugar levels. If you are diabetic and notice a change in the results of your urine or blood sugar test or if you have any questions or concerns, please consult your doctor for further information.

Driving and Hazardous Work – Phentermine may cause some people to feel a false sense of well-being or to become dizzy, lightheaded, drowsy, or less alert than normal. Do NOT drive or engage in hazardous work until you know how the medicine affects you.

Hyperthyroidism (over-active thyroid) – This drug may worsen the condition.

Kidney Disease – The chance of serious side effects may increase due to higher blood levels of Phentermine.

History of substance abuse – Phentermine can cause dependence if used by patients prone to addiction, or if used improperly

Mental illness – Phentermine use can activate or increase certain symptoms

Surgery, Dental Treatment, or Emergency Treatment – Taking Phentermine in conjunction with medicines that are used during surgery or dental or emergency treatments may cause serious side effects.

Prior to surgery or treatment, inform the doctor or dentist that you are using this medicine.

Phentermine HCL is only a short-term treatment for weight loss, its extended use should be avoided because it can cause some serious side effects and may even prove lethal.

Doctors do not prescribe this drug for a long term use (maximum 12 weeks) because of Phentermine side effects and its addictive nature.

Phentermine HCL is a strong medicine that is potentially addictive, because of that it is a controlled substance and can only be obtained with a doctor’s prescription.

What About Phentermine Interactions With Other Drugs?

Phentermine should be taken with caution, or not at all, with the following medications.

Let your health care provider know if you are taking, or plan to take, any of the following medications during your Phentermine treatment.

Allergy or hay fever medication

Amphetamines – avoid mixing these drugs with Phentermine

Anesthesia or other medications used during surgery may react badly with Phentermine

Other diet pills – Mixing Phentermine with other diet pills can greatly increase the risk of developing heart problems.

Asthma medication

Caffeine – Vivarin, NoDoz, or any other over the counter medication offered to help you stay awake. Read labels carefully and consult your doctor or pharmacist about unfamiliar ingredients.

Cesamet (nabilone)

Cold or sinus medication

Cylert (pemoline)

Insulin, Micronase, or other diabetes medications; your doctor may adjust your dosage while you are taking Phentermine.

Ismelin (guanethidine) – consult your doctor about mixing Phentermine with Ismelin, or any other medication prescribed for high blood pressure

MAO inhibitors – Phentermine must never be mixed with MAO (monoamine oxidase) inhibitors such as the antidepressants Nardil, Marplan, or Parnate.

Ritalin (methylphenidate)

Selective serotonin reuptake inhibitors (SSRIs) like Celexa (citalopram), Prozac (fluoxetine), Luvox (fluvoxamine), Paxil (paroxetine), or Zoloft (sertraline).

Street drugs of any type should not be mixed with Phentermine. They may be unpredictably laced with stimulants, or cause a dangerous reaction on their own.

Symmetrel (amantadine)

Tricyclic antidepressants such as Elavil (amitriptyline), Asendin (amoxapine), Anafranil (clomipramine), Pertofrane or Norpramin (desipramine), Sinequan (doxepin), Tofranil (imipramine), Aventyl or Pamelor (nortriptyline), Vivactil (protriptyline), and Surmontil (trimipramine), may increase the risk of side effects from Phentermine.

Using these drugs together can increase the risk of high blood pressure or irregular heartbeat.

Ulone (chlophedianol)

In general, it is not safe to combine Phentermine with any other stimulant or diet pill.

Always advise your dentist, doctor, or anesthesiologist if you are using Phentermine if you go in for dental work, surgery, or to the emergency room.

It is dangerous to mix Phentermine with many of the medications used in these circumstances.

Physical or Mental Dependence on Phentermine

If you have been taking Phentermine for a long time or in large doses and you think you may have become mentally or physically dependent on it, please speak to your physician.

Some signs of dependence on Phentermine are:

A strong desire or need to continue taking the medicine
❌ A need to increase the dose to receive the effects of the medicine
When consumers try to stop the use, they go into withdrawal

Withdrawal side effects may include:

Changes in personality
❌ Excessive, excited activity
Irritability (severe)
❌ Extreme tiredness or weakness
Mental depression or illness (Severe)
❌ Nausea or vomiting
Skin disease
❌ Stomach Cramps or Pain
❌ Trouble in Sleeping or Nightmares (severe)

Ending Phentermine Treatment

After you stop taking Phentermine, your body may need time to adjust. The length of time this takes depends on the amount of medicine you were using and how long you used it.

During this time, speak to your health care provider if you notice any side effects.

If you have been taking Phentermine in large doses or for a long period of time, do NOT stop taking it without first consulting your health care provider.

S/he may want you to gradually reduce the amount you are taking before stopping completely. This will help prevent withdrawal side effects.

Best Phentermine Alternative

Around the 2002-2005 dozens of millions of Phentermine pills were distributed around the world, and Phentermine was the best selling slimming product with millions of bottles sold illegally.

In 2005 the typical price tag on phentermine was $80-$90 for a 30 tablets. Afterwards, prices were around $350 shipped from China and India.

The explanation for the increased Phentermine price and unauthorized overseas distribution is because of restriction by the DEA in the 2005 when all of popular internet pharmacies were shut down due to the unauthorized business without appropriate doctor’s prescriptions.

After the shutting of internet pharmacies many consumers got worried because of weight loss benefits accomplished by this drug and wanting to continue with such fantastic weight reduction results.

Phentermine users then resorted to ordering knock-offs or ineffective water weight loss diet supplements.

Best Phentermine AlternativeOne reputable company, Wolfson Berg Limited had been experimenting with various ingredients with similar effects as phentermine, but without horrible negative effects.

After all of WBL research finished and groundbreaking natural ingredients already arranged in a FDA authorized laboratory, manufacturing of PhenQ (also known as In-Phentermine-Q) started in 2015.

PhenQ′s most important active ingredient is α-Lacys Reset® is a substitute for the phentermine’s main ingredient dimethylphenylethylamine.

Wolfson Berg Limited has carried out its own clinical test into the α-Lacys Reset®, and the results are following:

Users experienced a 7.24% decrease in excess body fat
✅ Users experienced a 3.44% decrease in body mass
Users experienced a 3.80% improvement in lean muscle mass

This really valuable ingredient which is 100% legal is coupled with many other potent ingredients which are as a group the strongest legal fat burner you can find today. The other PhenQ ingredients are:

Caffeine which works like an amplifier for the α-Lacys Reset® improving the fat burning potential to its full power and leading to fantastic weight loss results in a fairly short time.

Caffeine CoffeeCaffeine is a popular stimulant, making men and women more concentrated and attentive and decreasing physical exhaustion. [9]

Because of that, it is much easier to take part in physical activity. [10]

On the other hand, caffeine also fires up fat burning and diminishes appetite by increasing thermogenesis. [11]

L-carnitine reproduces the effects of Human chorionic gonadotropin hCG which helps transportation long-chain fatty acids. [12]

In other words, it supports release of accumulated body fat and triglycerides into the bloodstream for additional energy. [13]

Chili Pepper CapsaicinCapsimax Powder (Capsaicin, Piperine and ViatminB3) – This blend increases blood circulation and has thermogenic effect allowing you to expend more calories every day. [14] [15] [16]

Moreover, studies have revealed that piperine could even prevent additional fat cells from developing. [17]

Calcium Carbonate has been known to be beneficial to the bones, but also will help you to shift your excess fat.

Actually, some scientists say that calcium could inform various cells in your body to burn off fat deposits by suggesting that the body is healthy and extra fat is consequently not necessary. [18]

For that reasons cells and tissues begin to get rid of fat and this results in additional fat loss.

A research of obese adults consuming additional calcium discovered that they had an improved level of weight reduction. [19]

Chromium Picolinate is a mineral which is capable to curb sugar cravings, which means it might be easier for you to manage normal blood glucose levels. [20]

ChromiumFoods with carbohydrates (glucose) are processed in your body and stored as an energy source. If the sufficient amount of glucose is available in your cells you won’t have sugary cravings.

What Chromium is proven to do is make sure the cells carry optimum levels of glucose, consequently minimizing cravings for carbohydrates and strengthening your weight reduction efforts.

One research proved that individuals with depression observed sugary cravings and desire for food when using additional chromium. [21]

Nopal is a cactus which is comprised mostly of dietary fiber and has a positive effects on your appetite regulation. [22]

On top of that it consists of numerous amino acids, and because of this you may have additional energy while you are dieting. [23]

At the same time, it can help you to get rid of any excessive water kept in your tissues and cells.

With this strong composition of ingredients in PhenQ consumers can count on the following results:

Very fast weight reduction and fat burning
✅ Appetite suppression and elimination of snacking between meals
Burning off around 2 to 4 pounds every week
✅ More energy, improved mood and more alert feeling
Reduced levels of cholesterol

PhenQ is the leading, new generation of fat burners, and is considered as the best Phentermine alternative today.

The reason why it is so good alternative is because it is made from highly effective ingredients that are proven to work similar to Phentermine, but without dangerous side effects.

Manufactured in a lab approved by the FDA and following GMP standards, it is safer than Phentermine and 100% legal to buy online.

The truth is that while Phentermine HCL can help people with extra pounds to lose weight, many more find they increase health problems in the process.

It is true that for many people the side effects of Phentermine are a small price to pay for its great appetite suppression effects.

But thanks to phentermine alternative like PhenQ dieters can benefit from fast weight loss but without dangerous side effects.

Today, rather than choosing Phentermine HCL, many overweight people are finding that pills like PhenQ are not only just as efficient, but even safer than the prescriptions handed out by doctors.

You can only buy PhenQ on their official website.

Should I still use Phentermine tablets?

Personalty I wouldn’t use Phentermine tablets no matter how obese I am. I would rather stay obese than ruin my complete life.

However, you can use this horrible drug under some circumstances.

In case you are extremely obese and practically nothing has been effective for you, and your physician agrees, and you are mindful and aware of all the nasty side effects and dangers, then yes, you might be prepared to use this drug.

But only under the conditions I just explained, it may be your last resort if nothing else helped you.

In any case, you should not buy Phentermine on internet and use it without doctor’s supervision, because many bad things can happen and you can end up with a lot of health problems that may even be fatal.

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