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Dexamfetamine Sulfate

This article examines several clinical trials investigating the use of dexamfetamine sulfate, a stimulant medication, in treating various medical conditions. The trials focus on its effects in patients with glioma-related fatigue, attention deficit hyperactivity disorder (ADHD), cocaine use disorder, and its impact on healthy individuals. These studies aim to better understand the drug’s efficacy, safety, and mechanisms of action in different patient populations.

Table of Contents

What is Dexamfetamine Sulfate?

Dexamfetamine Sulfate, also known as d-amphetamine or dexamphetamine, is a stimulant medication used to treat various conditions affecting the brain and nervous system[1]. It belongs to a class of drugs called amphetamines, which work by increasing the levels of certain chemicals in the brain that help with focus, attention, and impulse control.

Medical Uses

Dexamfetamine Sulfate is primarily used to treat the following conditions:

  • Attention Deficit Hyperactivity Disorder (ADHD): This is the most common use for dexamfetamine. It helps improve focus, attention, and reduce hyperactivity and impulsivity in both children and adults with ADHD[2].
  • Narcolepsy: A sleep disorder that causes excessive daytime sleepiness. Dexamfetamine can help keep patients awake during the day[1].
  • Cocaine Use Disorder: Some studies are exploring the use of dexamfetamine as a potential treatment for cocaine addiction[3].

How Dexamfetamine Works

Dexamfetamine works by increasing the levels of two important chemicals in the brain: dopamine and norepinephrine. These chemicals are involved in regulating attention, focus, and impulse control[2].

In people with ADHD, dexamfetamine helps to:

  • Improve focus and concentration
  • Reduce hyperactivity and impulsivity
  • Enhance working memory and cognitive function

Forms and Dosages

Dexamfetamine Sulfate is available in several forms:

  • Immediate-release tablets: These are usually taken 2-3 times a day[2].
  • Sustained-release tablets: These provide a longer-lasting effect and are typically taken once daily[3].
  • Lisdexamfetamine: This is a prodrug form of dexamfetamine (sold under the brand name Elvanse) that is converted to dexamfetamine in the body. It’s designed to have a longer duration of action[4].

The dosage varies depending on the condition being treated, the patient’s age, and individual response to the medication. It’s crucial to follow your doctor’s instructions carefully and not adjust the dose without medical supervision.

Potential Side Effects

Like all medications, dexamfetamine can cause side effects. Common side effects may include[4]:

  • Decreased appetite
  • Difficulty sleeping
  • Dry mouth
  • Increased heart rate and blood pressure
  • Headache
  • Mood changes

More serious side effects are rare but can occur. It’s important to discuss any concerns or unusual symptoms with your healthcare provider.

Current Research Studies

Several ongoing studies are exploring new uses and effects of dexamfetamine:

  • ADHD in Fetal Alcohol Spectrum Disorders (FASD): A study is investigating the effectiveness of dexamfetamine in treating ADHD symptoms in children with FASD[5].
  • Cocaine Use Disorder: Researchers are studying sustained-release dexamfetamine as a potential treatment for moderate to severe cocaine addiction[3].
  • Comparison with Other Stimulants: Studies are comparing the effects of dexamfetamine with other stimulants like lisdexamfetamine in treating ADHD[4].
  • Effects on Dopamine System: Some research is looking at how repeated use of dexamfetamine affects dopamine synthesis and release in the brain[1].

These studies aim to improve our understanding of how dexamfetamine works and potentially expand its medical uses.

Study Focus Participant Group Key Interventions Main Outcomes Measured
Glioma-related fatigue Patients with stable gliomas Dexamfetamine sulfate vs. placebo Fatigue reduction (MFI 20 scale), quality of life, cognitive function
ADHD treatment comparison Adults with ADHD Dexamfetamine vs. Lisdexamfetamine ADHD symptom improvement, pharmacokinetics, side effects
Amphetamine effects on healthy individuals Healthy adults Lisdexamfetamine vs. d-amphetamine vs. placebo Hormone levels, subjective effects, emotion recognition, empathy
Cocaine use disorder treatment Patients with cocaine use disorder Sustained-release dexamfetamine vs. placebo Cocaine abstinence, overall health status, social functioning

FAQ

  • What conditions are being studied with dexamfetamine sulfate in these clinical trials? The clinical trials are studying dexamfetamine sulfate in various conditions, including severe fatigue in glioma patients, attention deficit hyperactivity disorder (ADHD), cocaine use disorder, and its effects on healthy individuals.
  • How is dexamfetamine sulfate being compared to other medications in these trials? In some trials, dexamfetamine sulfate is being compared to lisdexamfetamine (another form of the drug) and placebo. Researchers are looking at differences in pharmacokinetics, pharmacodynamics, and effectiveness between these forms.
  • What are some of the main outcomes being measured in these trials? The trials are measuring various outcomes, including fatigue reduction, ADHD symptom improvement, cocaine use reduction, changes in hormone levels, subjective drug effects, cognitive performance, and physiological responses like blood pressure and heart rate.
  • Are there any potential side effects of dexamfetamine sulfate mentioned in these trials? While specific side effects are not detailed, the trials are monitoring for adverse effects. Some studies are measuring cardiovascular responses (blood pressure and heart rate) and subjective experiences, which may help identify potential side effects.
  • How long do these clinical trials typically last? The duration of the trials varies. Some last for a few days with intense monitoring, while others extend up to 24 weeks of treatment. One study even includes a 6-week discontinuation phase to assess the effects of stopping the medication.

Ongoing Clinical Trials on Dexamfetamine Sulfate

  • Study on the Safety and Effectiveness of Dexamfetamine Sulfate for Adults with ADHD and Moderate to Severe Depression

    Recruiting

    1 1
    Investigated diseases:
    Investigated drugs:
    Germany

  • Study on Sustained-Release Dexamphetamine and Piracetam for Patients with Moderate to Severe Cocaine Use Disorder and Opioid Dependence

    Recruiting

    1 1
    Investigated drugs:
    The Netherlands

  • Study on Dexamfetamine for Adults with Amphetamine and Opioid Dependence Undergoing Opioid Treatment

    Recruiting

    1
    Investigated diseases:
    Investigated drugs:
    Norway

  • Study on the Effectiveness and Safety of Dexamfetamine Sulfate for Adults with ADHD

    Not yet recruiting

    1 1 1
    Investigated diseases:
    Investigated drugs:
    Germany

Glossary

  • Dexamfetamine Sulfate: A stimulant medication used to treat conditions like ADHD and narcolepsy. It works by increasing certain chemicals in the brain that help with focus and attention.
  • Glioma: A type of tumor that occurs in the brain and spinal cord, starting in the glial cells that surround and support nerve cells.
  • Asthenia: A medical term for weakness or lack of energy.
  • ADHD: Attention Deficit Hyperactivity Disorder, a condition characterized by difficulty paying attention, hyperactivity, and impulsiveness.
  • Pharmacokinetics (PK): The study of how a drug moves through the body, including its absorption, distribution, metabolism, and excretion.
  • Pharmacodynamics (PD): The study of how a drug affects the body, including its mechanism of action and the relationship between drug concentration and effect.
  • Placebo: A substance with no active medical effects, used as a control in testing new drugs.
  • Double-blind: A study design where neither the participants nor the researchers know who is receiving the actual treatment and who is receiving a placebo.
  • Randomized controlled trial: A type of scientific experiment where participants are randomly assigned to different treatment groups to compare outcomes.
  • Bioequivalence: The property of two drug products having the same biological effect in the body.
  • Cocaine use disorder: A condition characterized by problematic use of cocaine that leads to clinically significant impairment or distress.
  • Lisdexamfetamine: A prodrug of dexamfetamine, meaning it is inactive until metabolized in the body to become dexamfetamine.

References

  1. https://clinicaltrials.gov/study/NCT03223844
  2. https://clinicaltrials.gov/study/NCT05621174
  3. https://clinicaltrials.eu/trial/study-on-sustained-release-dexamphetamine-and-piracetam-for-patients-with-moderate-to-severe-cocaine-use-disorder-and-opioid-dependence/
  4. https://clinicaltrials.gov/study/NCT02668926
  5. https://clinicaltrials.gov/study/NCT04968522