Taking a weight loss drug may not result in
weight loss by itself. But using diet pills can help an
overweight person stay on a diet because nearly all of these medications work on suppressing appetite.
"Feeling full" is believed to be related to a number of biochemical processes in the body. Signals to indicate fullness come from fat cells and the gastrointestinal tract; these converge with signals in the central nervous system. Appetite suppressants target a couple of key neurotransmitters in this process: serotonin and norepinephrine. Increased levels of serotonin result in a feeling of fullness. Increasing norepinephrine levels stimulate the central nervous system, decreasing appetite. Only one drug among the weight loss medications works in a different way. Orlistat (Xenical, Alli) works in the gastrointestinal tract to prevent absorption of about a third of ingested fat.
Benzphetamine is a sympathomimetic amine, which is similar to an amphetamine. It is also known as an "anorectic" or "anorexigenic" drug. Benzphetamine stimulates your central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite.
Benzphetamine is used as a short-term supplement to diet and exercise in the treatment of obesity.
Benzphetamine may also be used for purposes other than those listed in this medication guide.
Didrex 50 mg
round, peach, imprinted with DIDREX 50
What are the possible side effects of benzphetamine (Didrex)?
If you experience any of the following serious side effects, stop taking benzphetamine and seek emergency medical attention:
an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
an irregular heartbeat or very high blood pressure (severe headache, blurred vision); or
hallucinations, abnormal behavior, or confusion.
Other, less serious side effects may be more likely to occur. Continue to take benzphetamine and talk to your doctor if you experience
restlessness or tremor,
anxiety or nervousness
headache or dizziness,
insomnia,
dry mouth or an unpleasant taste in your mouth,
diarrhea or constipation, or
impotence or changes in your sex drive.
Benzphetamine is habit forming. You can become physically and psychologically dependent on this medication, and withdrawal effects may occur if you stop taking it suddenly after several weeks of continuous use. Talk to your doctor about stopping this medication gradually.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What is the most important information I should know about benzphetamine (Didrex)?
Use caution when driving, operating machinery, or performing other hazardous activities. Benzphetamine may cause dizziness, blurred vision, or restlessness, and it may hide the symptoms of extreme tiredness. If you experience these effects, avoid hazardous activities.
Benzphetamine is habit forming. You can become physically and psychologically dependent on this medication, and withdrawal effects may occur if you stop taking it suddenly after several weeks of continuous use. Talk to your doctor about stopping this medication gradually.