Pregabalin Tablets Pregabalin Misuse National Drug Treatment Centre Research Administration
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Chapter 25 Mechanisms of Action of Antiepileptic Drugs
Chapter 25 Mechanisms of action of antiepileptic drugs GRAEME J. SILLS Department of Molecular and Clinical Pharmacology, University of Liverpool _________________________________________________________________________ Introduction The serendipitous discovery of the anticonvulsant properties of phenobarbital in 1912 marked the foundation of the modern pharmacotherapy of epilepsy. The subsequent 70 years saw the introduction of phenytoin, ethosuximide, carbamazepine, sodium valproate and a range of benzodiazepines. Collectively, these compounds have come to be regarded as the ‘established’ antiepileptic drugs (AEDs). A concerted period of development of drugs for epilepsy throughout the 1980s and 1990s has resulted (to date) in 16 new agents being licensed as add-on treatment for difficult-to-control adult and/or paediatric epilepsy, with some becoming available as monotherapy for newly diagnosed patients. Together, these have become known as the ‘modern’ AEDs. Throughout this period of unprecedented drug development, there have also been considerable advances in our understanding of how antiepileptic agents exert their effects at the cellular level. AEDs are neither preventive nor curative and are employed solely as a means of controlling symptoms (i.e. suppression of seizures). Recurrent seizure activity is the manifestation of an intermittent and excessive hyperexcitability of the nervous system and, while the pharmacological minutiae of currently marketed AEDs remain to be completely unravelled, these agents essentially redress the balance between neuronal excitation and inhibition. Three major classes of mechanism are recognised: modulation of voltage-gated ion channels; enhancement of gamma-aminobutyric acid (GABA)-mediated inhibitory neurotransmission; and attenuation of glutamate-mediated excitatory neurotransmission. The principal pharmacological targets of currently available AEDs are highlighted in Table 1 and discussed further below. -
“GABA” 'Bout? Pregabalin and Gabapentin Abuse
3/19/18 What’s All the “GABA” ‘Bout? Pregabalin and Gabapentin Abuse Courtney Kominek, PharmD, BCPS, CPE Disclosures .Courtney Kominek, PharmD, BCPS, CPE –Axial Healthcare – Consultant .The views and opinions expressed in this presentation are those of the authors and do not necessarily reflect the official policy or position of any agency of the United States government, including the Department of Veterans Affairs. 1 3/19/18 Learning Objectives .Review the proposed mechanisms of action (MOA) for gabapentin and pregabalin. .Explain the proposed rationale as to why gabapentin and pregabalin have become drugs of abuse. .Identify signs and symptoms of withdrawal that an addicted or tolerant patient may experience upon abrupt discontinuation of gabapentin or pregabalin. .Discuss updates on changes in pain management given the increase in gabapentin and pregabalin abuse. Current Situation Opioid overdose public health crisis Rising use of nonopioid medications including gabapentin Opioids and concomitant gabapentin increase risk for overdose Reports of gabapentinoid abuse Changes in PDMP and scheduling at state level http://www.register-herald.com/news/manchin-asks-fda-dea-to-consider-rescheduling-gabapentin/article_442fa04b-7ed9-5bf8-8d19-b5440e9c278b.html 2 3/19/18 Gabapentin and Pregabalin: Pharmacology and Pharmacokinetics Fact or Alternate Fact? .Gabapentin and pregabalin work on GABA. 3 3/19/18 Mechanism of Action Structurally related to GABA and has GABA-mimetic properties Do not • Alter uptake or breakdown • Convert into GABA • Bind to GABAa or GABAB Binds to the α2-δ subunit of the voltage-gated calcium channel Reduces the Ca2+ -dependent release of pro-nociceptive neurotransmitters Decreases release of glutamate, NE, and substance P Dworkin RH et al. -
Membrane Stabilizer Medications in the Treatment of Chronic Neuropathic Pain: a Comprehensive Review
Current Pain and Headache Reports (2019) 23: 37 https://doi.org/10.1007/s11916-019-0774-0 OTHER PAIN (A KAYE AND N VADIVELU, SECTION EDITORS) Membrane Stabilizer Medications in the Treatment of Chronic Neuropathic Pain: a Comprehensive Review Omar Viswanath1,2,3 & Ivan Urits4 & Mark R. Jones4 & Jacqueline M. Peck5 & Justin Kochanski6 & Morgan Hasegawa6 & Best Anyama7 & Alan D. Kaye7 Published online: 1 May 2019 # Springer Science+Business Media, LLC, part of Springer Nature 2019 Abstract Purpose of Review Neuropathic pain is often debilitating, severely limiting the daily lives of patients who are affected. Typically, neuropathic pain is difficult to manage and, as a result, leads to progression into a chronic condition that is, in many instances, refractory to medical management. Recent Findings Gabapentinoids, belonging to the calcium channel blocking class of drugs, have shown good efficacy in the management of chronic pain and are thus commonly utilized as first-line therapy. Various sodium channel blocking drugs, belonging to the categories of anticonvulsants and local anesthetics, have demonstrated varying degrees of efficacy in the in the treatment of neurogenic pain. Summary Though there is limited medical literature as to efficacy of any one drug, individualized multimodal therapy can provide significant analgesia to patients with chronic neuropathic pain. Keywords Neuropathic pain . Chronic pain . Ion Channel blockers . Anticonvulsants . Membrane stabilizers Introduction Neuropathic pain, which is a result of nervous system injury or lives of patients who are affected. Frequently, it is difficult to dysfunction, is often debilitating, severely limiting the daily manage and as a result leads to the progression of a chronic condition that is, in many instances, refractory to medical This article is part of the Topical Collection on Other Pain management. -
Trends in Stimulant Dispensing by Age, Sex, State of Residence, and Prescriber Specialty — United States, 2014–2019☆
HHS Public Access Author manuscript Author ManuscriptAuthor Manuscript Author Drug Alcohol Manuscript Author Depend. Author Manuscript Author manuscript; available in PMC 2021 December 01. Published in final edited form as: Drug Alcohol Depend. 2020 December 01; 217: 108297. doi:10.1016/j.drugalcdep.2020.108297. Trends in stimulant dispensing by age, sex, state of residence, and prescriber specialty — United States, 2014–2019☆ Amy R. Boarda,b,*, Gery Guyb, Christopher M. Jonesc, Brooke Hootsb aEpidemic Intelligence Service, Centers for Disease Control and Prevention, 4770 Buford Highway, Mailstop S106-8, Atlanta, GA, 30341-3717, United States bDivision of Overdose Prevention, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, 4770 Buford Highway, Mailstop S106-8, Atlanta, GA, 30341-3717, United States cOffice of the Director, National Center for Injury Prevention and Control, Centers for Disease Control and Prevention, 4770 Buford Highway, Mailstop S106-8, Atlanta, GA, 30341-3717, United States Abstract Background: Stimulant medications are commonly prescribed for the treatment of attention- deficit/hyperactivity disorder; however, they also have high potential for diversion and misuse. We estimated national stimulant dispensing trends from 2014 to 2019 and differences in dispensing by age, sex, state, prescriber specialty, payor type, patient copay, and stimulant type. Methods: We calculated rates of stimulant dispensing using IQVIA National Prescription Audit (NPA) New to Brand, NPA Regional, and NPA Extended Insights data, which provide dispensing estimates from approximately 49,900 pharmacies representing 92 % of prescriptions dispensed in the United States. Average annual percent change (AAPC) from 2014 to 2019 was analyzed using Joinpoint regression. Results: From 2014 to 2019, the national annual rate of stimulant dispensing increased significantly from 5.6 to 6.1 prescriptions per 100 persons. -
Pregabalin for the Treatment of Drug and Alcohol Withdrawal Symptoms: a Comprehensive Review
CNS Drugs (2016) 30:1191–1200 DOI 10.1007/s40263-016-0390-z REVIEW ARTICLE Pregabalin for the Treatment of Drug and Alcohol Withdrawal Symptoms: A Comprehensive Review 1 2,3 4 5 Rainer Freynhagen • Miroslav Backonja • Stephan Schug • Gavin Lyndon • 6 6 6 Bruce Parsons • Stephen Watt • Regina Behar Published online: 16 November 2016 Ó The Author(s) 2016. This article is published with open access at Springerlink.com Abstract Treatments for physical dependence and asso- treatment of physical dependence and accompanying ciated withdrawal symptoms following the abrupt discon- withdrawal symptoms associated with opioids, benzodi- tinuation of prescription drugs (such as opioids and azepines, nicotine, cannabinoids, and alcohol, although benzodiazepines), nicotine, alcohol, and cannabinoids are data from randomized controlled studies are sparse. How- available, but there is still a need for new and more ever, the current evidence is promising and provides a effective therapies. This review examines evidence sup- platform for future studies, including appropriate random- porting the potential use of pregabalin, an a2d voltage- ized, placebo- and/or comparator-controlled studies, to gated calcium channel subunit ligand, for the treatment of further explore the efficacy and safety of pregabalin for the physical dependence and associated withdrawal symptoms. treatment of withdrawal symptoms. Given the potential for A literature search of the MEDLINE and Cochrane Library pregabalin misuse or abuse, particularly in individuals with databases up to and including 11 December 2015 was a previous history of substance abuse, clinicians should conducted. The search term used was ‘(dependence OR exercise caution when using pregabalin in this patient withdrawal) AND pregabalin’. -
Exemption and Exclusion from Certain Requirements of the Drug Supply Chain Security Act During the COVID-19 Public Health Emergency
Contains Nonbinding Recommendations Exemption and Exclusion from Certain Requirements of the Drug Supply Chain Security Act During the COVID-19 Public Health Emergency Guidance for Industry April 2020 U.S. Department of Health and Human Services Food and Drug Administration Center for Drug Evaluation and Research Center for Biologics Evaluation and Research Contains Nonbinding Recommendations Preface Public Comment This guidance is being issued to address the Coronavirus Disease 2019 (COVID-19) public health emergency. This guidance is being implemented without prior public comment because the Food and Drug Administration (FDA or the Agency) has determined that prior public participation for this guidance is not feasible or appropriate (see section 701(h)(1)(C) of the Federal Food, Drug, and Cosmetic Act (FD&C Act) (21 U.S.C. 371(h)(1)(C)) and 21 CFR 10.115(g)(2)). This guidance document is being implemented immediately, but it remains subject to comment in accordance with the Agency’s good guidance practices. Comments may be submitted at any time for Agency consideration. Submit written comments to the Dockets Management Staff (HFA-305), Food and Drug Administration, 5630 Fishers Lane, Rm. 1061, Rockville, MD 20852. Submit electronic comments to https://www.regulations.gov. All comments should be identified with the docket number FDA- 2020-D-1136 and complete title of the guidance in the request. Additional Copies Additional copies are available from the FDA webpage titled “COVID-19-Related Guidance Documents for Industry, FDA Staff, and Other Stakeholders,” available at https://www.fda.gov/emergency-preparedness-and-response/mcm-issues/covid-19-related- guidance-documents-industry-fda-staff-and-other-stakeholders and from the FDA webpage titled “Search for FDA Guidance Documents” available at https://www.fda.gov/regulatory- information/search-fda-guidance-documents. -
FDA Regulation of Cannabidiol (CBD) Products
June 12, 2019 FDA Regulation of Cannabidiol (CBD) Products Cannabidiol (CBD) is promoted as treatment for a range of and hemp-derived compounds, including CBD. However, conditions, including epileptic seizures, post-traumatic the farm bill explicitly preserved FDA’s authority under the stress disorder, anxiety, and inflammation—despite limited Federal Food, Drug and Cosmetic Act (FFDCA, 21 U.S.C. scientific evidence to substantiate many of these claims. In §§301 et seq.) and Section 351 of the Public Health Service the United States, CBD is marketed in food and beverages, Act (PHSA, 42 U.S.C. §262), including for hemp-derived dietary supplements, and cosmetics—products that are products. According to FDA, “because the 2018 Farm Bill regulated by the Food and Drug Administration (FDA). did not change FDA’s authorities, cannabis and cannabis- CBD is also the active ingredient in an FDA-approved pharmaceutical drug, Epidiolex®. CBD is a plant-derived derived products are subject to the same authorities and substance from Cannabis sativa, the species of plant that requirements as FDA-regulated products containing any includes both hemp and marijuana, but from different plant other substance, regardless of whether the products fall varieties or cultivars. CBD is the primary nonpsychoactive within the definition of ‘hemp’ under the 2018 Farm Bill.” compound in cannabis, whereas tetrahydrocannabinol (THC) is cannabis’s primary psychoactive compound. FDA Regulation of CBD Products FDA, under the FFDCA, regulates many of the products Regulation of CBD Products marketed as containing cannabis and cannabis-derived Hemp and marijuana have separate definitions in U.S. law compounds, including CBD. -
Intranasal Pregabalin Administration: a Review of the Literature and the Worldwide Spontaneous Reporting System of Adverse Drug Reactions
brain sciences Perspective Intranasal Pregabalin Administration: A Review of the Literature and the Worldwide Spontaneous Reporting System of Adverse Drug Reactions Mohamed Elsayed *, René Zeiss, Maximilian Gahr, Bernhard J. Connemann and Carlos Schönfeldt-Lecuona Department of Psychiatry and Psychotherapy III, University of Ulm, Leimgrubenweg 12-14, 89075 Ulm, Germany; [email protected] (R.Z.); [email protected] (M.G.); [email protected] (B.J.C.); [email protected] (C.S.-L.) * Correspondence: [email protected]; Tel.: +49-(0)-731-500-61411; Fax: +49-(0)-731-500-61412 Received: 2 October 2019; Accepted: 11 November 2019; Published: 13 November 2019 Abstract: Background: It is repeatedly reported that pregabalin (PRG) and gabapentin feature a potential for abuse/misuse, predominantly in patients with former or active substance use disorder. The most common route of use is oral, though reports of sublingual, intravenous, rectal, and smoking administration also exist. A narrative review was performed to provide an overview of current knowledge about nasal PRG use. Methods: A narrative review of the currently available literature of nasal PRG use was performed by searching the MEDLINE, EMBASE, and Web of Science databases. The abstracts and articles identified were reviewed and examined for relevance. Secondly, a request regarding reports of cases of nasal PRG administration was performed in the worldwide spontaneous reporting system of adverse drug reactions of the European Medicines Agency (EMA, EudraVigilance database). Results: The literature search resulted in two reported cases of nasal PRG use. In the analysis of the EMA-database, 13 reported cases of nasal PRG use (11 male (two not specified), mean age of users = 34.2 years (four not specified)) were found. -
Gabapentin Enacarbil (Horizant) Monograph
Gabapentin enacarbil (Horizant) Monograph ® Gabapentin Enacarbil (Horizant ) National Drug Monograph March 2012 VA Pharmacy Benefits Management Services, Medical Advisory Panel, and VISN Pharmacist Executives The purpose of VA PBM Services drug monographs is to provide a comprehensive drug review for making formulary decisions. These documents will be updated when new clinical data warrant additional formulary discussion. Documents will be placed in the Archive section when the information is deemed to be no longer current. Executive Summary: Gabapentin enacarbil (Horizant®) is a prodrug of gabapentin which binds with high affinity to the α2δ subunit of voltage-activated calcium channels in vitro studies. It is unknown how the binding of gabapentin enacarbil (GEn) to the α2δ subunit corresponds to the treatment of restless leg syndrome (RLS) symptoms. Indication: GEn is FDA approved for treatment of RLS. Pharmacokinetics: GEn is primarily excreted by the kidneys and neither gabapentin nor GEn is substrate, inhibitor, or inducer of the major CYP450 system. In addition, GEn is not an inhibitor or substrate of p-glycoprotein in vitro. Dose: The recommended dosage is 600 mg once daily taken with food at about 5 PM. Efficacy: Several studies examining GEn have shown efficacy over placebo in patients with RLS; improvement in RLS symptoms was observed within 7 days of starting treatment.6-8, 12-14 Three studies demonstrated 1200 mg/day GEn significantly reduced International Restless Legs Syndrome (IRLS) scale total score and improved Clinical Global Impression– Improvement (CGI-I) scale compared with placebo.6-8 Two studies demonstrated efficacy at lower dose of 600 mg/day GEn; however, another study did not.7,12,13 These results are comparable to those seen with dopamine agonists.8,12 Adverse Drug Events: Commonly reported adverse effects for the approved dose of 600 mg/day GEn are somnolence, sedation and dizziness. -
Prescription Drug Abuse See Page 10
Preventing and recognizing prescription drug abuse See page 10. from the director: The nonmedical use and abuse of prescription drugs is a serious public health problem in this country. Although most people take prescription medications responsibly, an estimated 52 million people (20 percent of those aged 12 and Prescription older) have used prescription drugs for nonmedical reasons at least once in their lifetimes. Young people are strongly represented in this group. In fact, the National Institute on Drug Abuse’s (NIDA) Drug Abuse Monitoring the Future (MTF) survey found that about 1 in 12 high school seniors reported past-year nonmedical use of the prescription pain reliever Vicodin in 2010, and 1 in 20 reported abusing OxyContin—making these medications among the most commonly abused drugs by adolescents. The abuse of certain prescription drugs— opioids, central nervous system (CNS) depressants, and stimulants—can lead to a variety of adverse health effects, including addiction. Among those who reported past-year nonmedical use of a prescription drug, nearly 14 percent met criteria for abuse of or dependence on it. The reasons for the high prevalence of prescription drug abuse vary by age, gender, and other factors, but likely include greater availability. What is The number of prescriptions for some of these medications has increased prescription dramatically since the early 1990s (see figures, page 2). Moreover, a consumer culture amenable to “taking a pill for drug abuse? what ails you” and the perception of 1 prescription drugs as less harmful than rescription drug abuse is the use of a medication without illicit drugs are other likely contributors a prescription, in a way other than as prescribed, or for to the problem. -
The Controlled Substances Act: Regulatory Requirements
The Controlled Substances Act: Regulatory Requirements Brian T. Yeh Legislative Attorney December 13, 2012 Congressional Research Service 7-5700 www.crs.gov RL34635 CRS Report for Congress Prepared for Members and Committees of Congress The Controlled Substances Act: Regulatory Requirements Summary This report highlights certain non-criminal regulatory requirements of the Controlled Substances Act (CSA). The CSA and its implementing regulations establish a framework through which the federal government regulates the use of controlled substances for legitimate medical, scientific, research, and industrial purposes, and prevents these substances from being diverted for illegal purposes. The CSA assigns various plants, drugs, and chemicals (such as narcotics, stimulants, depressants, hallucinogens, and anabolic steroids) to one of five schedules based on the substance’s medical use, potential for abuse, and safety or dependence liability. Schedule I contains substances that have no currently accepted medical use and cannot safely be made available to the public under a prescription, while Schedules II, III, IV, and V include substances that have recognized medical uses and may be manufactured, distributed, and used in accordance with the CSA. The order of the schedules reflects substances that are progressively less dangerous and addictive. To restrict access to chemicals used in the illicit manufacture of certain controlled substances, the CSA also regulates 40 “listed chemicals.” Furthermore, the CSA regulates controlled substance “analogues,” which are substances that are not controlled but are structurally or pharmacologically similar to substances found in Schedule I or II and have no accepted medical use. Unless specifically exempted by the CSA, any person who handles controlled substances or listed chemicals (such as drug manufacturers, wholesale distributors, doctors, hospitals, pharmacies, and scientific researchers) must register with the Drug Enforcement Administration (DEA) in the U.S. -
Novel Treatments for Cocaine and Opioid Use Disorder
Novel Treatments for Cocaine and Opioid Use Disorder Kyle M. Kampman M.D. Department of Psychiatry Perelman School of Medicine University of Pennsylvania [email protected] “How about cocaine?” Outline • Medications for Cocaine Use Disorder • A lot of pilot trials / a lot of failure • Topiramate +/- amphetamine for CUD • Cocaine biomarkers • Metyrapone and oxazepam for CUD • Medications for Opioid Use Disorder • Injectables / Implantables • Rapid detoxification protocols Cocaine overdose deaths are common in AAs Annals of Internal Medicine 2018 168 (6) 453-455 Targets for cocaine meds - GABAA Glu Prefrontal Cortex + & Hippocampus, PPT Glutamate Ventral Amygdala, Thalamus Pallidum D1 - D2 GABA - GABAA Glu Nucleus Glu + + Accumbens κ-opioid D1 GABA Dopamine DAT - - D2 Dynorphin - D2 Enkephalin - GABAA Ventral Output Tegmentum Treatment of cocaine dependence - topiramate Topiramate is Associated with Cocaine Abstinence Drug Alcohol Depend. 2004;75(3):233-40. Topiramate for cocaine dependence Topiramate Associated with Greater End of Trial Abstinence Drug Alcohol Depend. 2013;133(1):94-9 Topiramate for cocaine dependence Topiramate Reduced Cocaine Use JAMA Psychiatry. 2013;70(12):1338-46 Dopaminergic Medications: Dextroamphetamine Long-Acting Dextroamphetamine Reduced Cocaine Use J Clin Psychopharmacol 2001; 21:522-6 Dopaminergic Medications: Methamphetamine Long-Acting Methamphetamine Reduced Cocaine Use Drug Alcohol Depend 2009; 101:34-41 Glutamatergic / Dopaminergic Combinations: MAS + Topiramate The Combination of MAS and