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What is the most important information I should know about amphetamine?

Use caution when driving, operating machinery, or performing other hazardous activities. Amphetamine may cause dizziness, blurred vision, or restlessness, and it may hide the symptoms of extreme tiredness. If you experience these effects, avoid hazardous activities. Amphetamine 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. Do not crush, chew, or open any "once-daily" amphetamine tablets or capsules. Swallow them whole.

What is amphetamine?

Amphetamine is a stimulant and an appetite suppressant. It stimulates the central nervous system (nerves and brain) by increasing the amount of certain chemicals in the body. This increases heart rate and blood pressure and decreases appetite, among other effects.

Amphetamine is used to treat narcolepsy and attention deficit disorder with hyperactivity (ADHD).

Amphetamine may also be used for purposes other than those listed in this medication guide.

What should I discuss with my healthcare provider before taking amphetamine?

Do not take amphetamine if you

• have heart disease or high blood pressure;

• have arteriosclerosis (hardening of the arteries);

• have hyperthyroidism;

• 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

• an anxiety disorder;

• Tourette's syndrome or motor or phonic tics;

• epilepsy or another seizure disorder; or

• diabetes.

You may not be able to take amphetamine, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.

Amphetamine is in the FDA pregnancy category C. This means that it is not known whether it will be harmful to an unborn baby. Do not take amphetamine without first talking to your doctor if you are pregnant or could become pregnant during treatment. Amphetamine passes into breast milk and may affect a nursing baby. Do not take amphetamine without first talking to your doctor if you are breast-feeding a baby.