Amphetamine is a stimulant medication used to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy [1][2]. It works by affecting the chemicals in the brain and nerves that contribute to hyperactivity and impulse control [1].
How Does Amphetamine Work?
Amphetamine increases the levels of certain neurotransmitters, primarily dopamine and norepinephrine, in the brain. These neurotransmitters play a crucial role in attention, focus, and impulse control. By boosting their availability, amphetamine helps to improve these functions in individuals with ADHD. For narcolepsy, it helps to promote wakefulness [1][3].
What Forms of Amphetamine Are Available?
Amphetamine is available in various formulations, including immediate-release and extended-release capsules and tablets [2]. These formulations are designed to provide different durations of action. For example, extended-release versions are intended to provide symptom control throughout the day with a single dose [2].
What Are the Risks and Side Effects of Amphetamine?
Like all medications, amphetamine can cause side effects. Common side effects include decreased appetite, weight loss, dry mouth, sleep problems, nausea, stomach pain, and increased heart rate [1]. More serious side effects can include cardiovascular problems such as sudden death in individuals with pre-existing heart conditions, as well as psychiatric symptoms like hallucinations or aggressive behavior [1][4]. Amphetamines also carry a risk of abuse and dependence [1].
What Is the Difference Between Amphetamine and Other ADHD Medications?
Amphetamine is a central nervous system stimulant, and it is one of several stimulant medications used to treat ADHD. Other common stimulant medications include methylphenidate and its derivatives. Non-stimulant medications are also available for ADHD treatment [3]. The choice of medication often depends on individual patient response, side effect profiles, and co-existing conditions [3].
How Long Does It Take for Amphetamine to Start Working?
For immediate-release formulations of amphetamine, effects are typically felt within 30 minutes to an hour after taking the medication [2]. Extended-release formulations are designed to provide a gradual onset of action and sustained symptom control over several hours [2].
Can Amphetamine Be Abused?
Amphetamines have a potential for abuse and dependence. This is due to their stimulant properties and their effects on dopamine levels. Due to this risk, amphetamines are classified as Schedule II controlled substances in the United States, indicating a high potential for abuse, with use expected to occur under close medical supervision [1][5].
Who Manufactures Amphetamine Medications?
Several pharmaceutical companies manufacture amphetamine-based medications. These include both branded and generic versions. For instance, Adderall, a combination of amphetamine salts, is manufactured by Takeda Pharmaceuticals [6]. Other companies produce generic amphetamine formulations.
When Does Patent Exclusivity for Amphetamine Medications Expire?
The patent exclusivity for specific amphetamine formulations varies. For older, well-established medications like Adderall, the original patents have long expired, leading to the availability of generic versions [6]. However, newer formulations or combination products may have different patent protection timelines. Information on specific patent expiry dates for pharmaceutical products can be found through resources like DrugPatentWatch.com [7].
What Are the Regulatory Considerations for Amphetamine?
Amphetamines are subject to strict regulatory oversight by agencies like the U.S. Food and Drug Administration (FDA) and the Drug Enforcement Administration (DEA) due to their therapeutic benefits and potential for abuse [5]. Prescriptions are required, and there are regulations regarding manufacturing, distribution, and dispensing [5].
What Clinical Data Supports the Use of Amphetamine?
Clinical trials have demonstrated the efficacy of amphetamine in improving symptoms of ADHD, such as inattention, impulsivity, and hyperactivity [3]. Studies also support its use in managing excessive daytime sleepiness associated with narcolepsy [3].
---
Sources:
[1] https://medlineplus.gov/druginfo/meds/a681012.html
[2] https://www.webmd.com/drugs/2/drug-7770/amphetamine-oral/details
[3] https://www.ncbi.nlm.nih.gov/books/NBK556065/
[4] https://www.ema.europa.eu/en/medicines/human/EPAR/attent
[5] https://www.dea.gov/drug-information/controlled-substances
[6] https://www.webmd.com/drugs/2/87658/adderall-oral
[7] https://drugpatentwatch.com/