Benign heart arrhythmia and Vyvanse,

Before taking this medicine
You should not use Vyvanse if you are allergic to lisdexamfetamine or any component of the formulation.

Do not use Vyvanse 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.

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;

kidney disease;

coronary artery disease (clogged arteries);

blood circulation problems in the hands or feet; or

drug or alcohol addiction.

Some medicines can interact with lisdexamfetamine and cause a serious condition called serotonin syndrome. 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. Ask your doctor before making any changes in how or when you take your medications.

It is not known whether Vyvanse will harm an unborn baby. However, taking the medicine during pregnancy can cause premature birth, low birth weight, withdrawal symptoms, and possible toxic effects in the newborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

Lisdexamfetamine can pass into breast milk and may cause side effects in the nursing baby. You should not breast-feed while using this medicine.

Vyvanse is not FDA-approved to treat ADHD in a child younger than 6 years old. Vyvanse is not FDA-approved to treat binge eating disorder in anyone younger than 18 years old.

Source and more info: https://www.drugs.com/vyvanse.html

Click on the link:
https://www.drugs.com/disease-interactions/lisdexamfetamine,vyvanse.html#cardiovascular