Reviewed by the HeyPsych Medical Review Board
Board-certified psychiatrists and mental health professionals
Clinical summary for Lisdexamfetamine (Vyvanse): Vyvanse is a once-daily stimulant for ADHD (and for moderate-to-severe binge eating disorder in adults). It can make it easier to start tasks, stay on track, and resist impulsive choices, often for 8–14 hours. The trade-offs are appetite suppression and sleep problems, plus the need for safety checks around heart risk and misuse risk.
People describe Vyvanse less like a “rush” and more like a steady push toward focus—when the dose is right. Here’s the real-world vibe:
Focus & Follow-Through
"I can start the thing without negotiating with myself for two hours."
Vyvanse is a prodrug—your body converts it to dextroamphetamine—so it tends to feel smoother and longer than many short-acting stimulants.
Vyvanse is used to treat ADHD (in adults and in kids ages 6+) and moderate-to-severe binge eating disorder in adults. For ADHD, it targets attention, impulsivity, and follow-through. For binge eating, the goal is fewer binge episodes and less loss-of-control eating—not weight loss.
Many people notice effects within about 1–2 hours after a morning dose. It commonly lasts 8–14 hours. If you take it too late in the day, insomnia is much more likely.
Yes. Vyvanse is a Schedule II medication. That means it has a higher potential for misuse and dependence, so prescribing and monitoring are stricter.
A common starting dose is 30 mg once daily in the morning. Dose can be increased by 10 mg or 20 mg weekly based on response and side effects. The maximum dose is 70 mg/day.
A common starting dose is 30 mg once daily in the morning, with weekly increases by 20 mg toward a target of 50–70 mg once daily (maximum 70 mg/day). If binge eating doesn’t improve, it should be discontinued.
Usually not. Stimulants can worsen anxiety and insomnia, especially if the dose is too high, caffeine is stacking, or sleep is already fragile. If your main problem is anxiety or sleep, Vyvanse is often the wrong tool.
The most common are decreased appetite, insomnia, dry mouth, jitteriness/restlessness, irritability, and nausea or constipation/diarrhea. Heart rate and blood pressure can also increase, which is why vitals are monitored.
It can, especially in people with vulnerability (personal or family history of bipolar disorder or psychosis) or at higher doses. Warning signs include paranoia, hallucinations, delusional thinking, or feeling ramped into mania. If that happens, stop and contact your prescriber urgently.
Not always. What matters most is a careful cardiovascular history (including family history of sudden cardiac death or arrhythmias) and a physical exam. An ECG isn’t mandatory for everyone, but it can be reasonable if there are symptoms, risk factors, or clinical concern.
Many people can stop without a long taper, but stopping abruptly after high doses or long-term use can cause a crash—fatigue, low mood, irritability, and rebound ADHD symptoms. If you’re stopping because of severe side effects (like mania/psychosis or serious heart symptoms), get urgent medical guidance.
Taking it too late (hello insomnia), skipping meals (then getting shaky/irritable and sleeping worse), stacking stimulants (like high caffeine or decongestants), or using it to override burnout. The medication should support a stable life—not replace sleep, food, and limits.
Yes. In adults with GFR 15 to <30 mL/min/1.73 m2, the max is 50 mg/day. With GFR <15 or ESRD on hemodialysis, the max is 30 mg/day. In GFR ≥30, the manufacturer doesn’t provide a specific adjustment.
This treatment information is for educational purposes only. Treatment decisions should be made in consultation with qualified healthcare professionals based on individual circumstances, symptoms, and medical history. Do not attempt treatment without professional guidance.
This information is for educational purposes. Always consult with a qualified healthcare provider before starting any new treatment.