1 The doctor may lower the Vyvanse dose. 2  Tell the doctor if your child is pregnant, breast-feeding, or planning to become pregnant or breast-feed.  The doctor may do regular checks of your child’s heart and blood pressure while he or she is taking Vyvanse.
http://www.vyvanse.com/dosage
Vyvanse (lisdexamfetamine) is a central nervous system stimulant. It affects chemicals in the brain and nerves that contribute to hyperactivity and impulse control. Vyvanse is used to treat attention deficit hyperactivity disorder (ADHD) in adults and in children who are at least 6 years old. Vyvanse is also used to treat moderate to severe binge eating disorder in adults. This medicine is not to be used for obesity or weight loss.
https://www.drugs.com/vyvanse.html
1 Tell the doctor if your child has any kidney problems. The doctor may lower the Vyvanse dose. 2  Tell the doctor if your child is pregnant, breast-feeding, or planning to become pregnant or breast-feed.  The doctor may do regular checks of your child’s heart and blood pressure while he or she is taking Vyvanse.
http://www.vyvanse.com/dosage
Increased blood pressure, sudden death in patients with heart problems, strokes, and heart attacks have been associated with lisdexamfetamine. Patients may experience new or worsening of psychiatric symptoms (for example, manic episodes, hearing voices, hallucinations) or worsening of aggressive behavior or hostility. Lisdexamfetamine like other amphetamines may be abused. Amphetamines have been associated with tolerance, psychological dependence, and social disability. Stopping amphetamines suddenly may cause a withdrawal syndrome that includes extreme fatigue and mental depression.
http://www.medicinenet.com/lisdexamfetamine/article.htm
1 Recommended starting dose: 30 mg once daily in the morning. Avoid afternoon doses because of the potential for insomnia1.  May be adjusted in increments of 10 mg or 20 mg at approximately weekly intervals.1 Vyvanse 10 mg is the lowest strength available for patients who may need flexible titration.
http://www.vyvansepro.com/adhd/dosage/
Vyvanse® (lisdexamfetamine dimesylate) is a prescription medicine used for the treatment of Attention-Deficit/Hyperactivity Disorder (ADHD) in patients 6 years and above, and for the treatment of moderate to severe Binge Eating Disorder (B.E.D.) in adults. Vyvanse is not for weight loss.
http://www.vyvanse.com/dosage
The recommended starting dose for Vyvanse (lisdexamfetamine dimesylate) is 30 mg once daily. The doctor will begin medication at a starting dose and, if needed, periodically increase or decrease it to help control ADHD symptoms and manage side effects.
http://www.vyvanse.com/dosage
Jay W. Marks, MD. Jay W. Marks, MD, is a board-certified internist and gastroenterologist. He graduated from Yale University School of Medicine and trained in internal medicine and gastroenterology at UCLA/Cedars-Sinai Medical Center in Los Angeles.
http://www.medicinenet.com/lisdexamfetamine/article.htm
Vyvanse is a drug of abuse and may be habit-forming. Keep track of the amount of medicine used from each new bottle. You should be aware if anyone is using your medicine improperly or without a prescription. Using this medication improperly can cause death or serious side effects on the heart.
https://www.drugs.com/vyvanse.html
Priapism defined as painful and nonpainful penile erection lasting more than 4 hours, have been reported in pediatric and adult patients treated with stimulants. The erection usually resolves when the drug is stopped. Prompt medical attention is required in the event of suspected priapism.
http://www.medicinenet.com/lisdexamfetamine/article.htm
what is the dosage for vyvanse
The dosage for Vyvanse is 30 milligrams once daily. The dosage for Vyvanse is 30 milligram once daily.