Diethylpropion is an appetite suppressant similar to an amphetamine. Diethylpropion stimulates your central nervous system (nerves and brain), which increases your heart rate and blood pressure and decreases your appetite.

Diethylpropion is used as together with diet and exercise to treat of obesity.

Diethylpropion may also be used for purposes not listed in this medication guide.

Taking diethylpropion in combination with other diet pills or appetite suppressants can cause serious or life threatening medical problems. Do not use any other diet medications while taking diethylpropion, unless your doctor tells you to.

You should not take this medication if you are allergic to diethylpropion or if you have pulmonary hypertension, severe coronary artery disease, glaucoma, overactive thyroid, uncontrolled high blood pressure, a history of drug or alcohol addiction, if you are agitated, or if you are taking any other diet pills.

Do not use diethylpropion if you have used an MAO inhibitor such as furazolidone (Furoxone), isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate) in the last 14 days. A dangerous drug interaction could occur, leading to serious side effects.

Before you take diethylpropion, tell your doctor if you have a heart murmur, heart valve disorder, heart rhythm disorder, epilepsy, or if you have taken other diet pills within the past 12 months.

This medication may cause blurred vision and may impair your thinking or reactions. Diethylpropion may also cause restless feelings that can hide the symptoms of extreme tiredness. Be careful if you drive or do anything that requires you to be alert and able to see clearly.

Diethylpropion may be habit-forming and should be used only by the person it was prescribed for. Keep the medication in a secure place where others cannot get to it.

Do not stop using diethylpropion suddenly after long-term use, or you could have unpleasant withdrawal symptoms. Ask your doctor how to avoid withdrawal symptoms when you stop using diethylpropion.

Taking diethylpropion in combination with other diet pills or appetite suppressants can cause serious or life threatening medical problems. Do not use any other diet medications while taking diethylpropion, unless your doctor tells you to.

You should not take this medication if you are allergic to diethylpropion or similar medicines (stimulants, diet pills, cold or allergy medicines), or if you have:

• pulmonary hypertension;

• severe coronary artery disease (hardened arteries);

• glaucoma;

• overactive thyroid;

• severe or uncontrolled high blood pressure;

• a history of drug or alcohol addiction;

• if you are in an agitated state; or

• if you are taking any other appetite suppressants or diet pills.

Do not use diethylpropion if you have used an MAO inhibitor such as furazolidone (Furoxone), isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam, Zelapar), or tranylcypromine (Parnate) in the last 14 days. A dangerous drug interaction could occur, leading to serious side effects.

To make sure you can safely take diethylpropion, tell your doctor if you have any of these other conditions:

• a heart murmur, heart valve disorder, or heart rhythm disorder;

• epilepsy or other seizure disorder; or

• if you have taken other diet pills within the past 12 months.

Diethylpropion may be habit forming and should be used only by the person it was prescribed for. Never share diethylpropion with another person, especially someone with a history of drug abuse or addiction. Keep the medication in a place where others cannot get to it.

FDA pregnancy category B. Diethylpropion is not expected to harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment.

Diethylpropion can pass into breast milk and may harm a nursing baby. Do not use this medication without telling your doctor if you are breast-feeding a baby.

Do not give this medicine to a child younger than 16 years old.