Didrex (Benzphetamine) is a sympathomimetic amine, which is similar to an amphetamine. Didrex is also known as an "anorectic" or "anorexigenic" drug. Didrex stimulates your central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite. Didrex is used as a short-term supplement to diet and exercise in the treatment of obesity.
Use caution when driving, operating machinery, or performing other hazardous activities. Didrex may cause dizziness, blurred vision, or restlessness, and it may hide the symptoms of extreme tiredness. If you experience these effects, avoid hazardous activities.
Didrex 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.
Didrex is a sympathomimetic amine, which is similar to an amphetamine. It is also known as an "anorectic" or "anorexigenic" drug. Didrex stimulates your central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite.
Didrex is used as a short-term supplement to diet and exercise in the treatment of obesity.
Didrex may also be used for purposes other than those listed in this medication guide.
have arteriosclerosis (hardening of the arteries);
have glaucoma;
have taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), tranylcypromine (Parnate), or phenelzine (Nardil) in the last 14 days; or
have a history of drug or alcohol abuse.
Before taking this medication, tell your doctor if you have
problems with your thyroid,
an anxiety disorder,
epilepsy or another seizure disorder, or
diabetes.
You may not be able to take Didrex, or you may require a lower dose or special monitoring during treatment if you have any of the conditions listed above.
Do not take Didrex if you are pregnant. Didrex is in the FDA pregnancy category X. This means that Didrex will cause birth defects in an unborn baby.
It is not known whether Didrex passes into breast milk. Do not take Didrex without first talking to your doctor if you are breast-feeding a baby.
Take Didrex exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.
Take each dose with a full glass of water.
Didrex is usually taken one to three times a day, before meals, on an empty stomach. Follow your doctor's instructions.
Do not take Didrex in the evening because it may cause insomnia.
Never take more of this medication than is prescribed for you. Too much Didrex could be very dangerous to your health.
Store Didrex at room temperature away from moisture and heat.
Take the missed dose as soon as you remember. However, if it is almost time for your next dose or if it is already evening, skip the missed dose and take only your next regularly scheduled dose. A dose taken too late in the day will cause insomnia. Do not take a double dose of this medication.
Symptoms of a Didrex overdose include restlessness, tremor, rapid breathing, confusion, hallucinations, panic, aggressiveness, nausea, vomiting, diarrhea, an irregular heartbeat, and seizures.
Use caution when driving, operating machinery, or performing other hazardous activities. Didrex may cause dizziness, blurred vision, or restlessness, and it may hide the symptoms of extreme tiredness. If you experience these effects, avoid hazardous activities.
Do not take Didrex late in the day. A dose taken too late in the day can cause insomnia.
If you experience any of the following serious side effects, stop taking Didrex 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 Didrex 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.
Didrex 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.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
You cannot take Didrex if you have taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), tranylcypromine (Parnate), or phenelzine (Nardil) in the last 14 days.
Changes in insulin and other diabetes drug therapies may be necessary during treatment with Didrex.
Didrex may reduce the effects of guanethidine (Ismelin). This could lead to an increase in blood pressure. Tell your doctor if you are taking guanethidine.
Before taking this medication, tell your doctor if you are taking a tricyclic antidepressant such as amitriptyline (Elavil), amoxapine (Asendin), doxepin (Sinequan), nortriptyline (Pamelor), imipramine (Tofranil), clomipramine (Anafranil), protriptyline (Vivactil), or desipramine (Norpramin). These drugs may decrease the effects of Didrex.
Drugs other than those listed here may also interact with Didrex. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines.
Didrex (Benzphetamine) is a sympathomimetic amine, which is similar to an amphetamine. Didrex is also known as an "anorectic" or "anorexigenic" drug. Didrex stimulates your central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite. Didrex is used as a short-term supplement to diet and exercise in the treatment of obesity.
