Extended-release capsules containing dextroamphetamine and amphetamine, marketed under the brand name Mydayis.

Extended-release capsules containing dextroamphetamine and amphetamine, marketed under the brand name Mydayis.

Generic Name and Brand Name

Dextroamphetamine and Amphetamine Extended-Release Capsules (Mydayis)

Drug Class

CNS stimulants


This medicine has a risk of abuse and misuse. Use only as directed by your doctor. Inform your doctor if you have a history of drug or alcohol abuse.


This medicine is used to treat attention deficit problems with hyperactivity. It may also be prescribed for other reasons.

Before Taking

Inform your doctor if you are allergic to dextroamphetamine, amphetamine, or any other part of this medicine. Disclose any health problems you have, including blood vessel disease, high blood pressure, heart problems, Tourette’s syndrome, glaucoma, anxiety, overactive thyroid, drug abuse, stroke, or kidney disease. Inform your doctor if you are taking any other medications.

How to Take

Take this medicine as directed by your doctor. Do not chew, break, or crush the capsule. You may take it with or without food, but take it the same way each time. Swallow whole or sprinkle the contents on applesauce. Do not store for future use.

Side Effects

Common side effects include nervousness, headache, loss of appetite, trouble sleeping, diarrhea or constipation, stomach pain, dizziness, dry mouth, bad taste in mouth, weight loss, upset stomach, or vomiting. Call your doctor immediately if you experience signs of an allergic reaction, high blood pressure, difficulty getting or maintaining an erection, seizures, trouble controlling body movements, restlessness, change in eyesight, numbness or pain in hands or feet, muscle pain or weakness, difficulty passing urine, pain when passing urine, or signs of heart attack, stroke, or sudden death.

Storage and Disposal

Store at room temperature and protect from light. Keep out of reach of children and pets. Do not flush down the toilet or pour down the drain unless instructed to do so. Check with your pharmacist for drug take-back programs in your area.

Consumer Information Use and Disclaimer

Do not share your medicine with others and do not take anyone else’s medicine. If your symptoms do not improve or worsen, contact your doctor. Read the Medication Guide provided with this medicine carefully and each time you refill your prescription. If you suspect an overdose, call poison control or seek medical attention immediately.



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