Amphetamine and dextroamphetamine are central nervous system stimulants that affect chemicals in the brain and nerves that contribute to hyperactivity and impulse control.

Amphetamine and dextroamphetamine is a combination medicine used to treat narcolepsy and attention deficit hyperactivity disorder (ADHD).

Amphetamine and dextroamphetamine may also be used for purposes not listed in this medication guide.

Do not use this medicine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.

You may not be able to use amphetamine and dextroamphetamine if you have:

• an allergy to any stimulant medicine;
• high blood pressure, heart disease, coronary artery disease (hardened arteries);
• overactive thyroid;
• glaucoma;
• severe anxiety, tension, or agitation (stimulant medicine can make these symptoms worse); or
• a history of drug or alcohol addiction.

Be sure your doctor knows if you also take stimulant medicine, opioid medicine, herbal products, or medicine for depression, mental illness, Parkinson's disease, migraine headaches, serious infections, or prevention of nausea and vomiting. These medicines may interact with amphetamine and dextroamphetamine and cause a serious condition called serotonin syndrome.

Stimulants have caused stroke, heart attack, and sudden death in certain people. Tell your doctor if you have:

• heart problems or a congenital heart defect;
• high blood pressure; or
• a family history of heart disease or sudden death.

To make sure this medicine is safe for you, tell your doctor if you or anyone in your family has ever had:

• depression, mental illness, bipolar disorder, psychosis, or suicidal thoughts or actions;
• motor tics (muscle twitches) or Tourette's syndrome;
• seizures or epilepsy;
• an abnormal brain wave test (EEG);
• kidney disease; or
• blood circulation problems in the hands or feet.

Taking this medicine during pregnancy can cause premature birth, low birth weight, or withdrawal symptoms in the newborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

You should not breast-feed while you are using this medicine.

Do not give this medicine to a child without medical advice. Not every brand of amphetamine and dextroamphetamine is for use in the same age group of children.

Use Amphetamine-Dextroamphetamine Er (Eqv-Mydayis) (Oral) exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

• signs of heart problems--chest pain, trouble breathing, feeling like you might pass out;
• signs of psychosis--hallucinations (seeing or hearing things that are not real), new behavior problems, aggression, hostility, paranoia;
• signs of circulation problems--numbness, pain, cold feeling, unexplained wounds, or skin color changes (pale, red, or blue appearance) in your fingers or toes;
• a seizure (convulsions);
• muscle twitches (tics); or
• changes in your vision.

Seek medical attention right away if you have symptoms of serotonin syndrome, such as: agitation, hallucinations, fever, sweating, shivering, fast heart rate, muscle stiffness, twitching, loss of coordination, nausea, vomiting, or diarrhea.

Long-term use of stimulant medicine can affect growth in children. Tell your doctor if your child is not growing at a normal rate while using this medicine.

Common side effects may include:

• stomach pain, nausea, loss of appetite;
• weight loss;
• mood changes, feeling nervous or irritable;
• fast heart rate;
• headache, dizziness;
• sleep problems (insomnia); or
• dry mouth.

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.

Do not share this medicine with another person, even if they have the same symptoms you have.

Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired.

Avoid drinking fruit juices or taking vitamin C at the same time you take amphetamine and dextroamphetamine. These can make your body absorb less of the medicine.