Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Methylphenidate (Ritalin) and clonidine ER (Kapvay) are both used to treat attention-deficit hyperactivity disorder (ADHD), but they work differently and have different side effects. Methylphenidate is a stimulant that increases levels of norepinephrine, serotonin, and dopamine in the brain, while clonidine ER is an alpha-2 adrenergic agonist that works in the brain, but how it works to manage ADHD is unknown. Methylphenidate is a controlled substance with a risk of misuse and dependency, whereas clonidine ER is not a controlled substance and doesn't carry the risk for potential abuse. Methylphenidate is typically taken 2 to 3 times a day, while clonidine ER is usually taken once or twice a day. Clonidine ER can cause sedation and sleepiness, while methylphenidate has the opposite effect of causing trouble sleeping. Additionally, methylphenidate is available in various forms, including tablets and oral liquids, while clonidine ER is only available in extended-release tablets and must be swallowed whole.
Methylphenidate (Ritalin)
Clonidine er (Kapvay)
Methylphenidate (Ritalin)
Clonidine er (Kapvay)
Summary of Ritalin vs. Kapvay
Summary for Stimulant
Prescription only
Methylphenidate hydrochloride (Ritalin) is a stimulant medication that's used for treating attention deficit-hyperactivity disorder (ADHD) and narcolepsy (daytime sleepiness) in adults and children ages 6 years and older. It works by raising the levels of certain chemicals in your brain to keep you focused and awake. The dosage is typically 2 to 3 times per day because it's an immediate-release form of methylphenidate. Side effects of this medication include low appetite, nervousness, and trouble sleeping.
Summary for Alpha-2 adrenergic agonist
Prescription only
Extended-release clonidine (Kapvay) is an alpha-2 agonist. It's a non-stimulant medication used to treat attention deficit-hyperactivity disorder (ADHD) in adults and children. Clonidine ER (Kapvay) is taken by mouth, typically twice per day. Some of the more common side effects include sleepiness and headache. This medication rarely causes insomnia (trouble sleeping), and isn't known to cause weight gain. Brand name Kapvay has been discontinued; clonidine ER (Kapvay) is only available as a generic medication.