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 / Diet Pill
|
Active Ingredient
|
Brand Trade or Generic
|
Primary Action
|
Notable Differences (Difference between the diet pills)
|
| Phentermine |
Phentermine Hydrochloride (HCL) |
Generic |
Sympathomimetic family of appetite suppressants |
Cheapest and most popular of the prescription diet pills |
| Adipex |
Phentermine Hydrochloride (HCL) |
Brand of Phentermine |
Sympathomimetic family of appetite suppressants |
The most popular brand name Phentermine. Maximum strength 30mg Phentermine base |
| Bontril |
Phendimetrazine tartrate |
Trade Name |
Sympathomimetic family of appetite suppressants |
Has the least side effects of any of the appetite suppressant medications. Slow Release formula provides added benefit. Slow release are 105mg as opposed to 35mg |
| Phendimetrazine |
Phendimetrazine tartrate |
Generic |
Sympathomimetic family of appetite suppressants |
Cheaper, generic version of bontril. Has the least side effects of any of the appetite suppressant medications. Slow Release formula provides added benefit. Slow release are 105mg as opposed to 35mg |
| Didrex |
Benzphetamine |
Trade Name |
Sympathomimetic family of appetite suppressants |
Considered to be the strongest of these type of weight loss drugs |
| Ionamin |
Phentermine Hydrochloride (HCL) |
Brand of Phentermine |
Sympathomimetic family of appetite suppressants |
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 |
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. |
| Tenuate (Dospan) |
Diethylpropion hydrochloride |
Trade Name |
Sympathomimetic family of appetite suppressants |
In Diethylpropion hydrochloride 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. DIETHYLPROPION (Tenuate Dospan®) is a medicine used to decrease appetite in over weight patients. Generic diethylpropion hydrochloride sustained-release tablets are available. |
| 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, it 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. |