This medication is used to treat attention deficit hyperactivity disorder – ADHD. It works by changing the amounts of certain natural substances in the brain. Dextroamphetamine belongs to a class of drugs known as stimulants. It can help increase your ability to pay attention, stay focused on an activity, and control behavior problems. It may also help you to organize your tasks and improve listening skills.
This medication is also used to treat a certain sleeping disorder (narcolepsy) to help you stay awake during the day. It should not be used to treat tiredness or to hold off sleep in people who do not have a sleep disorder.
How to use
Read the Medication Guide and, if available, the Patient Information Leaflet provided by your pharmacist before you start taking dextroamphetamine and each time you get a refill. If you have any questions, ask your doctor or pharmacist.
Take this medication with or without food as directed by your doctor, usually 1 to 3 times a day. The first dose is usually taken when you wake up in the morning. If more doses are prescribed, take them as directed by your doctor, usually 4-6 hours apart. Taking this medication late in the day may cause trouble sleeping (insomnia).
If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose.
The dosage is based on your medical condition and response to treatment. Your doctor may adjust your dose to find the dose that is best for you. Follow your doctor’s instructions carefully.
Use this medication regularly to get the most benefit from it. To help you remember, take it at the same time(s) each day.
During treatment, your doctor may occasionally recommend stopping the medication for a short time to see whether there are any changes in your behavior and whether the medication is still needed.
Nausea, stomach upset, cramps, loss of appetite, diarrhea, dry mouth, headache, nervousness, dizziness, trouble sleeping, sweating, weight loss, irritability, and restlessness may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Remember that your doctor has prescribed this medicine because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
This medication may raise your blood pressure. Check your blood pressure regularly and tell your doctor if the results are high.
Tell your doctor right away if you have any serious side effects, including: signs of blood flow problems in the fingers or toes (such as coldness, numbness, pain, or skin color changes), unusual wounds on the fingers or toes, mental/mood/behavior changes (such as agitation, aggression, mood swings, depression, hallucinations, abnormal thoughts/behavior, thoughts of suicide), uncontrolled movements, muscle twitching/shaking, outbursts of words/sounds, change in sexual ability/interest, swelling ankles/feet, extreme tiredness, significant unexplained weight loss, frequent/prolonged erections (in males).
Warnings & Precautions
Before taking this medication, tell your doctor or pharmacist if you are allergic to it; or to other sympathomimetic drugs (such as amphetamine or lisdexamfetamine); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: blood circulation problems (such as Raynaud’s disease), certain mental/mood conditions (such as severe agitation, psychosis), personal/family history of mental/mood disorders (such as bipolar disorder, depression, psychotic disorder, suicidal thoughts), heart problems (including irregular heartbeat/rhythm, coronary artery disease, heart failure, cardiomyopathy, problems with the heart structure such as valve problems), family history of heart problems (such as sudden death/irregular heartbeat/rhythm), history of stroke, high blood pressure, overactive thyroid (hyperthyroidism), a certain eye problem (glaucoma), seizures, personal or family history of a substance use disorder (such as overuse of or addiction to drugs/alcohol), personal or family history of uncontrolled muscle movements (such as Tourette’s syndrome).
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor’s approval.
Taking MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking MAO inhibitors (isocarboxazid, linezolid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, tranylcypromine) during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before treatment with this medication. Ask your doctor when to start or stop taking this medication.
Some products have ingredients that could raise your heart rate or blood pressure. Tell your pharmacist what products you are using, and ask how to use them safely (especially cough-and-cold products or diet aids).
The risk of serotonin syndrome/toxicity increases if you are also taking other drugs that increase serotonin. Examples include street drugs such as MDMA/ “ecstasy,” St. John’s wort, certain antidepressants (including SSRIs such as fluoxetine/paroxetine, SNRIs such as duloxetine/venlafaxine), among others. The risk of serotonin syndrome/toxicity may be more likely when you start or increase the dose of these drugs.
Dextroamphetamine is very similar to amphetamine or lisdexamfetamine. Do not use medications containing amphetamine or lisdexamfetamine while using dextroamphetamine.