Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Vyvanse (lisdexamfetamine) and guanfacine ER (Intuniv) are both used to treat ADHD, but they have some key differences. Vyvanse is a stimulant used to treat ADHD in adults and children 6 years and older, but can also treat binge eating disorder in adults. Vyvanse works quickly, often within a couple of hours, but can cause side effects like difficulty sleeping and loss of appetite. It’s also a controlled substance, which means it has a high risk of misuse and dependency. On the other hand, guanfacine ER is a non-stimulant and not a controlled substance, making it a safer option for those concerned about dependency. Additionally, guanfacine ER is only approved for children and adolescents and can take several weeks to start working. Common side effects of guanfacine ER include sleepiness and tiredness. Both medications are taken once a day and available as a lower-cost generics.
Vyvanse (lisdexamfetamine)
Intuniv (guanfacine ER)
Vyvanse (lisdexamfetamine)
Intuniv (guanfacine ER)
Summary of Vyvanse vs. Intuniv
Summary for Stimulant
Prescription only
Vyvanse, the brand name for lisdexamfetamine, is a stimulant medication. It's used to treat attention deficit-hyperactivity disorder (ADHD) in people 6 years and older. It can also treat binge eating disorder (BED) in adults. Vyvanse (lisdexamfetamine) comes as capsules and chewable tablets. It's taken once per day in the morning. The dosage starts low and gets adjusted based on how you respond to the medication. Common side effects include trouble sleeping and loss of appetite. Vyvanse (lisdexamfetamine) is a controlled substance because it has a high risk of misuse and dependency.
Summary for Alpha 2A-adrenergic receptor agonist
Prescription only
Intuniv (guanfacine extended release) is used to treat attention-deficit hyperactivity disorder (ADHD) in kids ages 6 to 17 years old. It's not a controlled substance and can be used instead of stimulant medications for ADHD. Intuniv (guanfacine ER) belongs to the drug class called alpha-2A agonists. It comes as a tablet that you take by mouth once a day, either in the morning or at bedtime. Common side effects include sleepiness and tiredness. Taking it in the evening might help with these side effects. Intuniv (guanfacine ER) comes as brand-name and generic versions.