Vyvanse Side Effects

Vyvanse, known generically as lisdexamfetamine, is a stimulant that treats attention-deficit/hyperactivity disorder (ADHD). It helps control the chemicals and nerves in the brain that cause hyperactivity and impulsiveness. Although considered effective, there are a variety of side effects that accompany this drug. Weigh its pros and cons before implementing as part of your child's treatment plan.

Common Side Effects

According to eMedTV.com, the most common side effects associated with Vyvanse occur in 10 to 39 percent of those who take it. These side effects include decreased appetite, dry mouth, headaches, insomnia, stomach pain and irritability.

Less Common Side Effects

Although not as common, the following occur frequently and are reported in 2 to 9 percent of patients taking Vyvanse. These side effects include nausea, feeling jittery, increased perspiration, weight loss, fever, drowsiness, diarrhea, tremors (uncontrolled shaking), vomiting, weight loss, dizziness and changes in mood or behavior.

Serious Side Effects

Report these side effects immediately to your doctor, because they are considered a potential health risk. These side effects include thoughts of suicide, chest pain, tightness or heart palpitations, depression, agitation or restlessness, fainting spells or seizures, confusion, shortness of breath, aggressiveness, hallucinating and tics (uncontrolled movements of the head, arms, legs, mouth or neck).

Signs of an Allergic Reaction

Signs of an allergic reaction include the onset of hives, the appearance of a rash, swelling of your lips, mouth, tongue or throat, difficulty breathing or swallowing and itching. Seek emergency medical treatment if you experience any of these symptoms.

Signs of an Overdose

According to Drugs.com, an overdose of Vyvanse can be fatal. Signs of an overdose include restlessness, muscle twitches, confusion, panic, unexplained muscle pain or tenderness, fever or flu symptoms, tremors, hallucinations, nausea, stomach pain, vomiting, diarrhea, being light-headed, uneven heartbeats and fainting.