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Difference between Phentermine and the other Diet Pills

Here we attempt to explain the difference between Phentermine and the other diet pills and weight loss drugs that are available by prescription. Find out the difference between blue Phentermine and Yellow phentermine here.

The difference between Phentermine and the other prescription diet pills can be broken down into two parts.
 

 

 

 
 

Different Weight Loss Actions

There are essentially 3 different kinds of weight loss actions employed by the different diet pills:

  • Sympathomimetic family of appetite suppressants - stimulates the central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite.
  • Stomach lipase inhibitor (a fat blocker) - works in your digestive system to block about one-third of the fat in the food you eat from being digested. Enzymes in your digestive system, called lipases, help digest (or break down) fat.
  • Sibutramine - Balances two very important brain chemicals, serotonin and norepinephrine. This helps to increase metabolism and causes a feeling of fullness and increased energy levels. Studies indicate that sibutramine assists in both weight loss and management.

Different Features of Phentermine and the other Diet Pills

Although the Weight Loss action differences are the primary ones, there can also be a difference between the diet pills themselves, which can affect your choice of weight loss drug.

It is important to read the information on this page together with the drug information provided for each of the different diet pills to ensure that you understand all the possible side effects of each drug and that you fully understand the difference between each weight loss drug.

Weight Loss Drug
Active Ingredient
Brand Trade or Generic
Primary Action
Differences between each of the Diet Pills
Phentermine Phentermine Hydrochloride (HCL) Generic Sympathomimetic family of appetite suppressants Phentermine is the cheapest and most popular of the prescription diet pills
Adipex Phentermine Hydrochloride (HCL) Brand of Phentermine Sympathomimetic family of appetite suppressants Adipex is the most popular brand name Phentermine. It has the Maximum strength 30mg Phentermine base and is sold in 37.5mg doses
Bontril Phendimetrazine tartrate Trade Name Sympathomimetic family of appetite suppressants Bontril has the least side effects of any of the appetite suppressant medications. Slow Release formula provides added benefit.
Didrex Benzphetamine Trade Name Sympathomimetic family of appetite suppressants Didrex is considered to be the strongest of these type of weight loss drugs
Ionamin Phentermine Hydrochloride (HCL) Brand of Phentermine Sympathomimetic family of appetite suppressants Ionamin is set in resin, to produce a time release medication / pill. Some people, with sensitive stomachs or other reactions to immediate release Phentermine or Adipex, prefer Ionamin.
Meridia Sibutramine Trade Name Affects appetite control centers in the brain. Reduces food intake by increasing satiety. Not an appetite suppressant Meridia balances two very important brain chemicals, serotonin and norepinephrine. This helps to increase metabolism and causes a feeling of fullness and increased energy levels. Studies indicate that sibutramine assists in both weight loss and management. Meridia is not Phentermine based
Tenuate (Dospan) Diethylpropion hydrochloride Trade Name Sympathomimetic family of appetite suppressants In Tenuate Dospan tablets, diethylpropion hydrochloride is dispersed in a hydrophilic matrix. On exposure to water, the diethylpropion hydrochloride is released at a relatively uniform rate as a result of slow hydration of the matrix. The result is controlled release of the anorectic agent.
Xenical Orlistat Trade Name Stomach lipase inhibitor (a fat blocker) Unlike other commonly prescribed weight-loss medications, Xenical is not an appetite suppressant and does not have a direct effect on the brain. Instead, Xenical works in your digestive system to block about one-third of the fat in the food you eat from being digested. Enzymes in your digestive system, called lipases, help digest (or break down) fat. When taken with meals, Xenical attaches to the lipases and blocks them from breaking down some of the fat you have eaten. The undigested fat cannot be absorbed and is eliminated in your bowel movements.

Diet pills - the difference between the different types

We hope that the above information explains the difference between Phentermine diet pills, Ionamin and Adipex and the other diet pills like Meridia Xenical Didrex Bontril and Tenuate. That it clarifies the difference between phentermine, tenuate didrex and bontril and that it helps you to understand the difference between xenical meridia and phentermine. We have attempted to compare the different prescription diet pills by their ingredients and primary actions to help you better understand the difference between them and to help you decide which of the diet pills is right for your weight loss needs.