Vyvanse and Adderall are both stimulant medications used to treat attention-deficit/hyperactivity disorder (ADHD), but they differ in their active ingredients, how they are absorbed, and their duration of effect.
What active ingredients are in Vyvanse and Adderall?
Vyvanse's active ingredient is lisdexamfetamine dimesylate, a prodrug that is converted to dextroamphetamine in the body [1]. Adderall is a combination of four amphetamine salts: dextroamphetamine saccharate, dextroamphetamine sulfate, amphetamine aspartate monohydrate, and amphetamine sulfate [2]. This means Adderall contains both dextroamphetamine and levoamphetamine [3].
How do Vyvanse and Adderall work differently in the body?
Lisdexamfetamine in Vyvanse is inactive until it is metabolized, primarily in the blood, into dextroamphetamine [1]. This conversion process is slower and more consistent than the absorption of Adderall [4]. Adderall's amphetamine salts are absorbed directly into the bloodstream [3]. This difference in absorption affects the onset and duration of their therapeutic effects.
How long do the effects of Vyvanse and Adderall last?
Vyvanse is known for its long-acting properties, typically providing symptom control for up to 13 hours [1]. Adderall comes in both immediate-release and extended-release formulations. Immediate-release Adderall generally lasts for 4 to 6 hours, while extended-release Adderall (Adderall XR) can last for up to 12 hours [5].
Can Adderall be crushed or broken?
Immediate-release Adderall tablets can be crushed or broken, but the extended-release capsules (Adderall XR) should not be crushed or broken and should be swallowed whole [5]. Vyvanse capsules can be opened, and the contents mixed with water, yogurt, or orange juice [1]. The powder from a Vyvanse capsule should not be taken dry or with hot liquids [1].
What are the side effects of Vyvanse and Adderall?
Common side effects for both medications can include decreased appetite, dry mouth, trouble sleeping, increased blood pressure, and increased heart rate [1][5]. Some individuals may experience different responses or side effect profiles due to the distinct formulations [4].
How do Vyvanse and Adderall compare in terms of potential for abuse?
Both Vyvanse and Adderall are controlled substances and carry a risk of abuse, dependence, and diversion [1][5]. However, because Vyvanse is a prodrug that requires metabolic conversion, its abuse potential when injected or snorted is considered lower than that of Adderall [4].
What are the patent statuses of Vyvanse and Adderall?
Vyvanse has faced patent challenges, with various companies seeking to market generic versions. Information regarding specific patent expirations and litigation for Vyvanse can be found through resources like DrugPatentWatch.com [6]. Adderall's patents have long since expired, allowing for the availability of multiple generic formulations [3].
What other medications are available for ADHD?
Besides Vyvanse and Adderall, other common ADHD medications include methylphenidate-based stimulants like Ritalin and Concerta, as well as non-stimulant options such as atomoxetine (Strattera) [7].
Where can I find more information on ADHD medications and patents?
Detailed information on drug patents, including those for ADHD medications like Vyvanse, is available on DrugPatentWatch.com [6].
Sources:
[1] https://www.vyvanse.com/
[2] https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/021395s033lbl.pdf
[3] https://www.rxlist.com/adderall-vs-vyvanse-drug-comparison/drugs-condition.htm
[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2914175/
[5] https://www.adderall.com/
[6] https://drugpatentwatch.com/
[7] https://www.additudemag.com/medication-list-adhd-stimulants-non-stimulants/