Vyvanse (lisdexamfetamine): uses, side effects, and what to expect

If you and your psychiatrist are considering Vyvanse, you probably have questions about how it works, what to expect, and whether it is the right fit. Talkiatry psychiatrists prescribe Vyvanse (lisdexamfetamine), a central nervous system stimulant, as part of a broader treatment plan for ADHD and binge eating disorder. It is designed as a prodrug, meaning it activates gradually in the body for steadier symptom relief.

Key takeaways

• Vyvanse (lisdexamfetamine) is a central nervous system stimulant FDA-approved to treat ADHD and binge eating disorder.
• As a prodrug, Vyvanse is converted into its active form after you take it, producing a slower and steadier release throughout the day.
• Many people notice symptom relief that lasts 8 to 14 hours per dose.
• Vyvanse is a Schedule II controlled substance, so your psychiatrist will monitor its use closely to make sure it is safe and effective for you.

What is Vyvanse?

Vyvanse is a brand-name prescription medication. Its generic name is lisdexamfetamine. It belongs to a class of medications called central nervous system stimulants. Talkiatry psychiatrists may prescribe Vyvanse to treat attention-deficit/hyperactivity disorder (ADHD) and binge eating disorder in adults, after a thorough psychiatric evaluation.

What does Vyvanse treat?

Vyvanse is FDA-approved for the following conditions. Your psychiatrist will determine whether it is appropriate based on your symptoms, history, and overall treatment plan.

On-label uses

• Attention-deficit/hyperactivity disorder (ADHD). Vyvanse is one of the most commonly prescribed medications for ADHD. It can help improve focus, reduce impulsivity, and support daily functioning.
• Binge eating disorder (BED). Vyvanse is also approved to help reduce the number of binge eating episodes in adults.

How does Vyvanse work?

Vyvanse works by increasing levels of several chemical messengers in the brain. Dopamine and norepinephrine are its primary targets, but it also has a weaker effect on serotonin.¹ These chemicals help regulate attention, motivation, and impulse control. Because Vyvanse is a prodrug, your body converts it into its active form after you take it, which allows for a gradual onset rather than a sudden spike.²

• Increases dopamine and norepinephrine in the brain. Vyvanse ultimately boosts these neurotransmitters, which play an important role in attention, motivation, and impulse control.
• Activates gradually in the body. Vyvanse is a "prodrug," meaning it becomes active only after it's metabolized in the body, which leads to a slower, steadier release.
• Supports sustained focus and impulse control. This steady activation can help improve concentration, organization, and follow-through throughout the day.

3 things a Talkiatry psychiatrist wants you to know about Vyvanse

• It's designed to last most of the day. That extended duration means many patients can get through work, school, and evening responsibilities on a single morning dose, which is something psychiatrists factor in when choosing a medication.
• It may affect appetite or sleep. Decreased appetite and trouble falling asleep are among the most common side effects, especially when starting. Your psychiatrist can help you manage both.
• It must be taken as prescribed. Because Vyvanse is a controlled medication, your psychiatrist will check in regularly to see how you're responding, watch for side effects, and make sure the medication is still the right fit. That ongoing partnership is a normal part of treatment.

Common side effects of Vyvanse

Common side effects of Vyvanse include decreased appetite, headache, dry mouth, and trouble sleeping.¹ Most are mild and may improve as your body adjusts to the medication. The full list may include:

• Headache
• Dry mouth
• Constipation or diarrhea
• Nausea
• Weight loss

Talk to your psychiatrist if any of these feel persistent, severe, or get in the way of your day.

Serious side effects of Vyvanse and when to seek help

Serious side effects are less common, but it is important to recognize them. Contact your psychiatrist or seek emergency care right away if you experience any of the following:¹

• Slow or difficult speech
• Weakness or numbness in an arm or leg
• Seizures
• Hallucinations or believing things that are not true
• Unusual suspicion of others
• Rapid changes in mood
• Motor or verbal tics
• Hives or rash
• Swelling of the eyes, face, tongue, lips, or mouth
• Blurred vision or other vision problems
• Paleness or blue color of fingers or toes
• Numbness, pain, or temperature sensitivity in fingers or toes
• Unexplained wounds on fingers or toes
• Fast, pounding, or irregular heartbeat
• Sweating or flushed skin
• Dilated pupils
• Abnormally excited mood or irritability
• Restlessness or difficulty sleeping
• Hostility or aggression
• Loss of appetite or loss of coordination
• Uncontrollable movement of a body part
• Vomiting or stomach pain
• Thoughts of harming or killing yourself or others
• Risk of sudden death in children and teenagers with heart defects or serious heart problems
• Risk of sudden death, heart attack, or stroke in adults with heart defects or serious heart problems
• Slow growth or weight gain in children (with long-term use)

Call your psychiatrist right away or seek emergency care if you experience any of these symptoms.

What to watch for when starting Vyvanse

When starting Vyvanse, watch for changes in sleep, appetite, mood, and how alert you feel.¹ Here are a few things to keep in mind during the first weeks:

• Do not drive or operate machinery until you know how this medication affects your alertness.
• Vyvanse works best as part of a complete treatment program for ADHD. Your psychiatrist may recommend combining it with therapy or other strategies.
• Do not suddenly stop taking this medication without talking to your psychiatrist. If you have been taking it for a while, your psychiatrist may need to decrease your dose gradually.
• Trouble sleeping is common early on. Talk to your psychiatrist if it persists so they can adjust timing or dosage.

What to do if you miss a dose of Vyvanse

Take the missed dose as soon as you remember it. If it is almost time for your next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.¹

Who should talk to a psychiatrist before taking Vyvanse

Some health conditions, medications, and life situations change how Vyvanse is prescribed. Tell your psychiatrist if any of the following apply to you:¹

• Have an allergy to lisdexamfetamine or other stimulants
• Are taking or have taken MAO inhibitors within the past two weeks
• Have a family history of irregular heartbeat or sudden death
• Have a personal history of heart attack, heart defect, high blood pressure, irregular heartbeat, or hardened arteries
• Have a history of depression, bipolar disorder, or mania
• Have motor or verbal tics or Tourette syndrome
• Have had suicidal thoughts
• Have Raynaud's disease
• Have a history of mental illness, seizures, abnormal EEG, glaucoma, hyperthyroidism, or kidney disease
• Are pregnant or breastfeeding
• Are 65 or older (this medication is generally not recommended)
• Drink or have drunk large amounts of alcohol
• Use or have used street drugs
• Have overused prescription medications