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    Non Stimulant ADHD Medication Overview

    Non Stimulant ADHD Medication Overview
    by Janice Rodden, ADDitude
    June 27, 2019

    ADHD clinicians prescribe two main types of medication that treat ADHD symptoms:


    Stimulant medications are typically the first choice to treat ADHD symptoms because they work for 70-80% of people with attention deficit hyperactivity disorder (ADHD or ADD)1. When stimulants don't work, or patients experience severe side effects, non stimulant ADHD medication is the most common second-line treatment.

    Unlike quick-acting stimulants, non stimulant ADHD medications may take up to a week to attain full effectiveness. As a result, it can take much longer to titrate non stimulant medications - that is, to find the best dosage for maximum symptom control with minimal side effects.

    The non stimulant medication used to treat ADHD fall into several categories:

    • FDA-approved non stimulant ADHD medication
    • Antidepressant medication
    • Blood pressure medication
    • Wakefulness-promoting medication
    • Anti-viral medication

    FDA-Approved Non Stimulant ADHD Medication
    These non stimulant ADHD medications were created to treat symptoms of attention deficit hyperactivity disorder and are approved by the U.S. Food and Drug Administration (FDA) as safe, proven treatments.

    Strattera (atomoxetine) was the first non stimulant ADHD medication. Its generic name is atomoxetine. It is a norepinephrine (noradrenaline) reuptake inhibitor. Strattera works similarly to selective serotonin reuptake inhibitors (SSRIs) that are used to treat depression by raising levels of the neurotransmitter norepinephrine in the brain. This can help the primary symptoms of ADHD: hyperactivity, inattention, and impulsivity.

    The most common side effects of Strattera include decreased appetite, nausea, vomiting, fatigue, dyspepsia (indigestion), dizziness, and mood swings.

    Intuniv (guanfacine) is a time-release version of the central alpha2A-adrenergic receptor agonist guanfacine. It is taken once daily and is thought to affect receptors in the brain in a way that improves ADHD symptoms such as emotional sensitivity, hyperarousal, and social aggression with limited side effects. It is not a controlled substance, and has a low risk of abuse or dependence. It can be used as a monotherapy, or as a complementary treatment alongside ADHD stimulant medications.

    The most common side effects of Intuniv are sleepiness, dry mouth, tiredness, difficulty sleeping, nausea, stomach pain, dizziness, irritability, slow heart rate, and low blood pressure.

    Kapvay (clonidine) is an extended-release alpha-agonist medication used to relax blood vessels and reduce blood pressure. It can also trigger the release of norepinephrine in the brain, which, in turn, improves ADHD symptoms. It can be used as a monotherapy, or as a complementary ADHD treatment alongside stimulant medications.

    The most common side effects of Kapvay are tiredness, cough, runny nose, sneezing, irritability, sore throat, nightmares, change in mood, constipation, increased body temperature, and ear pain.

    Antidepressant Medications
    These medications sometimes work to increase dopamine and norepinephrine, two neurotransmitters that exist in low levels in the ADHD brain. As a result, some physicians prescribe them "off-label" to treat ADHD symptoms, meaning they are not FDA-approved to treat attention deficit hyperactivity disorder. They can be a good treatment choice for people with ADHD and depression, but are not generally as effective as Strattera or stimulant medications. The most commonly prescribed antidepressant for ADHD is Wellbutrin.

    Wellbutrin (bupropion) is a norepinephrine dopamine reuptake inhibitor (NDRI), meaning it slows down the reabsorption of dopamine and norepinephrine after these chemicals are released into the brain. This action makes these neurotransmitters more available to send messages in the brain. Wellbutrin was first approved by the FDA in 1985 to treat depression. Other brand names of bupropion include Aplenzin, Forfivo, and Zyban.

    Effexor XR (venlafaxine) is part of a newer class of antidepressant medications called serotonin-norepinephrine reuptake inhibitor (SNRI). It is sometimes, but not commonly, used to treat ADHD because it works to increase levels of norepinephrine and serotonin in the brain, which can improve mood or concentration. One small study found that treatment with Effexor improved ADHD symptoms for adults2.

    Tricyclic antidepressants have been shown to improve ADHD symptoms for some children, adolescents, and adults who don't respond to stimulants. The options include Tofranil (imipramine), desipramine (Norpramin, Pertofrane), and Nortriptyline (Aventyl, Pamelor). There is the most evidence for ADHD symptom control with desipramine, but tricyclic antidepressants can cause side effects that some find intolerable3.

    Monoamine oxidase inhibitors (MAOIs) such as Nardil (phenelzine) or Parnate (tranylcypromine) have been shown to improve ADHD symptoms in adolescents and adults in a small number of studies. However, they are rarely used because they have serious and sometimes dangerous side effects and interactions4.

    The most common side effects of antidepressants are nausea and vomiting, weight gain, diarrhea, sleepiness, and sexual problems. Wellbutrin XR and Effexor XR generally do not cause as many side effects as tricyclic antidepressants and MAOIs5.

    Blood Pressure Medications
    These medications have the same active ingredient as FDA-approved non stimulant ADHD medications6.

    Tenex (Guanfacine) is an immediate-release central alpha2A-adrenergic receptor agonist with the same active ingredient as Intuniv. Because the medication is released more quickly into the bloodstream, some patients report more side effects with Tenex than when taking Intuniv.

    Clonidine (Catapres) is an alpha-agonist medication used to relax blood vessels and reduce blood pressure. The extended-release formulation, Kapvay, is FDA-approved to treat ADHD.

    Wakefulness-Promoting Medications
    Wakefulness-promoting medications are not approved by the FDA to treat ADHD, but some physicians prescribe them because they have similar mechanisms of action in the body.

    Provigil (modafinil) is the most commonly used in this class of medications. Some research has shown improvement in ADHD symptoms for adults taking Provigil when compared to a placebo7.

    The most common side effects of modafinil are headache, back pain, nausea, nervousness, stuffy nose, diarrhea, feeling anxious, trouble sleeping, dizziness, and upset stomach.

    Anti-Viral Medications
    Symmetrel (amantadine) is an antiviral drug used to prevent certain types of the flu by stopping the virus's growth, and to treat respiratory symptoms of the flu. It is not a substitute for a flu vaccination. The Centers for Disease Control and Prevention (CDC) does not recommend treating the flu with amantadine in the U.S. because of a developed resistance caused by the circulating strains8.

    Symmetrel is also used to alleviate symptoms of Parkinson's Disease such as tremors. It is thought to work by stimulating the production of dopamine. Increased dopamine can also help symptoms of ADHD; it is sometimes used off-label to treat ADHD symptoms in some patients. This use is not approved by the FDA, but studies suggest that treatment plans developed by William Singer, M.D., and Roger Cohen, M.D., effectively improved executive functioning and sensory integration with low doses of amantadine9. A study found some beneficial effects of amantadine for children with ADHD, as well10.

    The most common side effects of amantadine are blurred vision, nausea, dry mouth, dizziness when standing, and insomnia.

    Sources

    1 Advokat, Claire, et al. "Attention-deficit hyperactivity disorder (ADHD) stimulant medications as cognitive enhancers." Frontiers in Neuroscience, 7: 82. 29 May 2013. doi: 10.3389/fnins.2013.00082

    2 Finding, RL, et al. "Venlafaxine in adults with attention-deficit/hyperactivity disorder: an open clinical trial." The Journal of Clinical Psychiatry, 57(5): 184-189. 01 May 1996. PubMed PMID: 8626348

    3 Otasowie, John, et al. "Tricyclic antidepressants for ADHD in children and adolescents." Cochrane Database Systematic Review, 19(9) 19 September 2014. doi: 10.1002/14651858.CD006997.pub2

    4 Biederman, Joseph, et al. "Evidence-based pharmacotherapy for attention-deficit hyperactivity disorder." International Journal of Neuropsychopharmacology, 7(1): 82. 7 March 2004. doi: 10.1017/S1461145703003973

    5 Cleveland Clinic "Attention Deficit Hyperactivity Disorder (ADHD): Nonstimulant Therapy (Strattera) & Other ADHD Drugs." 18 July 2016. Web. (https://my.clevelandclinic.org/health/drugs/12959-attention-deficit-hyperactivity-disorder-adhd-nonstimulant-therapy-strattera–other-adhd-drugs) Accessed 17 Jun. 2019.

    6 Ruiling, Luan, et al. "Efficacy and Tolerability of Different Interventions in Children and Adolescents with Attention Deficit Hyperactivity Disorder." Frontiers in Psychiatry. 13 November 2017. doi: 10.3389/fpsyt.2017.00229

    7 Turner, D. "A review of the use of modafinil for attention-deficit hyperactivity disorder." Expert Review of Neurotherapeutics, 6(4): 455-68. 6 April 2006. doi: 10.1586/14737175.6.4.455

    8Centers for Disease Control and Prevention. "Antiviral Dosage." (2016). Web. (https://www.cdc.gov/flu/professional...ral-dosage.htm)

    9Hallowell, Edward M, and John J. Ratey. (2005). Delivered From Distraction. pp.251-253. New York, NY. Ballantine Books.

    10Sheik Hosenbocus, M.D., FRCPC, and Raj Chahal, MSW. "Amantadine: A Review of Use in Child and Adolescent Psychiatry." Journal of the Canadian Academy of Child and Adolescent Psychiatry. 2013 Feb; 22(1): 55–60.

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    Re: Non Stimulant ADHD Medication Overview


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