Vyvanse is FDA-approved to treat two conditions: attention deficit hyperactivity disorder (ADHD) in adults and children ages 6 and older, and moderate to severe binge eating disorder (BED) in adults. It is also sometimes prescribed off-label for other conditions, though those uses have less formal evidence behind them.
ADHD in Children and Adults
ADHD is the primary reason Vyvanse is prescribed. The medication is cleared for anyone age 6 and up, including adults. It works by increasing levels of a stimulant compound in the brain that helps with focus, impulse control, and the ability to stay on task. For ADHD, the typical starting dose is 30 mg taken once in the morning, and it can be increased in small steps each week up to a maximum of 70 mg per day.
One of the key differences between Vyvanse and older stimulant medications is how long it lasts. In clinical studies, it improved attention for up to 14 hours in adults and up to 13 hours in children ages 6 to 12, with effects kicking in within about 1.5 to 2 hours of taking a dose. That long window means most people take it once in the morning and don’t need a second dose later in the day.
Binge Eating Disorder in Adults
Vyvanse is the only stimulant medication with FDA approval specifically for binge eating disorder. It’s approved for moderate to severe cases in adults, not for general weight loss. BED involves recurring episodes of eating large amounts of food in a short period, accompanied by a feeling of loss of control. The medication helps reduce the frequency of binge episodes.
For BED, the starting dose is also 30 mg per day, but it’s increased more quickly, in 20 mg jumps each week, to reach a target dose of 50 to 70 mg per day. The maximum is the same 70 mg ceiling as for ADHD. It’s worth noting that Vyvanse is not approved or recommended as a weight loss drug on its own.
Off-Label Uses
Doctors sometimes prescribe Vyvanse (and other stimulants) for conditions beyond ADHD and BED. Off-label prescribing is legal and common across medicine. It simply means the specific use hasn’t gone through the formal FDA approval process for that condition. According to guidance from the University of Washington’s psychiatry program, the off-label uses with the most clinical support include treatment-resistant depression, geriatric depression, and cognitive recovery after traumatic brain injury.
Less established but still seen in practice: stimulants for fatigue in neurological conditions, excessive daytime sleepiness, and PTSD-related symptoms. Prescribing stimulants purely for weight loss or cognitive enhancement in healthy people is generally discouraged by clinical guidelines.
How Vyvanse Works Differently Than Other Stimulants
Vyvanse is a prodrug, which means it’s inactive when you swallow it. Your body has to convert it into its active form before it does anything. Specifically, red blood cells break Vyvanse apart into two pieces: the active stimulant (dextroamphetamine) and an amino acid called lysine, which your body discards. This conversion happens gradually, which is why the medication’s effects ramp up slowly and last most of the day rather than hitting all at once.
This design has a practical benefit beyond convenience. Because the conversion happens at a steady rate in the bloodstream, taking a larger dose doesn’t produce a dramatically faster or more intense effect the way some immediate-release stimulants can. That built-in speed limit is one reason Vyvanse is considered to have a lower potential for misuse than some alternatives, though it is still a controlled substance.
Forms and How It’s Taken
Vyvanse comes in two forms: capsules and chewable tablets. Both are available in strengths from 10 mg to 60 mg. If you have trouble swallowing pills, the chewable tablet is designed to be thoroughly chewed before swallowing. The capsule can also be opened and mixed into water or soft food, though you should check the specific instructions with your pharmacist. Either way, it’s taken once daily in the morning.
Prescription Rules and Generic Availability
Vyvanse is classified as a Schedule II controlled substance by the DEA, the same category as other amphetamine-based medications. That classification means prescriptions cannot be refilled. You need a new prescription each time, and in many states, your doctor must write or send it each month rather than calling it in.
Generic versions of Vyvanse (sold as lisdexamfetamine) became available in 2023 from multiple manufacturers. However, supply has been inconsistent. Several generic manufacturers have reported shortages tied to problems with the active ingredient. As of the most recent data, some companies like Apotex, Lannett, Sun Pharma, and Rhodes have stock available, while others have products on back order or limited allocation. The brand-name version from Takeda remains available. If your pharmacy is out of one manufacturer’s version, it may be worth calling around or asking about alternatives.
Who Should Not Take Vyvanse
Vyvanse is not appropriate for everyone. You should not take it if you have heart disease, hardening of the arteries, or moderate to severe high blood pressure. It’s also contraindicated for people with an overactive thyroid, glaucoma, a history of drug abuse, or severe anxiety. If you’ve taken an MAOI antidepressant within the past 14 days, Vyvanse can cause a dangerous interaction. Anyone who has had an allergic reaction to another stimulant medication should also avoid it.
These restrictions exist because stimulants raise heart rate and blood pressure, and they can worsen certain pre-existing conditions. Your prescriber will typically ask about your cardiovascular history and mental health background before starting treatment.