Along with drug schedules, substances are also broken down into classes based on their effect on the body and mind. Drugs are classified for safety and effectiveness reasons. It helps limit side effects, predict your response to it, and choose a replacement drug when one doesn’t work. You shouldn’t take multiple drugs from a single class or that affect the same organ system. Since 1970 the United States has maintained theControlled Substance Actin an effort to protect the general public from potentially dangerous and addictive drugs.

classes of drugs

Benzos treat a variety of mental issues and sleep conditions. Because they are highly addictive, benzos cause many medical and mental problems when misused. Interferon Beta-l—Drug used in the treatment of ambulatory patients with multiple sclerosis to reduce the frequency of clinical exacerbations, brand name Betaseron . Filgrastim Granulocyte Colony Stimulating Factor (G-CSF)— A drug used to stimulate blood production of white cells and decrease the incidence of infection in cancer patients, brand name Neupogen . Angiotensin-Converting Enzyme Inhibitors —Drugs for the treatment of high blood pressure that inhibit an enzyme, angiotensin-converting enzyme, which produces a blood-pressure-elevating substance. Your healthcare provider should be aware of everything you’re taking so they can ensure you’re not mixing drugs that don’t mix well or doubling up on one class.

USP Drug Classification

It’s valuable to understand drugs and the pharmacology classification of drugs, specifically the risks and effects. Additionally, it helps recognize addiction in loved ones. Cannabinoids are a drug class chemically similar to THC or tetrahydrocannabinol. Cannabinoids cause feelings of happiness, but they also do serious mental and physical harm. Even though they are the second-most abused drug, they are becoming legally acceptable. At the same time, some drugs are grouped under one drug classification.

If you take multiple drugs, they may change each others’ effectiveness. CNS depressants slow down the operations of the brain and the body. Examples of CNS depressants include alcohol, barbiturates, anti-anxiety tranquilizers (e.g., Valium, Librium, Xanax, Prozac, and Thorazine), GHB , Rohypnol, and many other anti-depressants (e.g., Zoloft, Paxil). For imported drugs, only data from local clinical trials can be counted in the local registration. Even if a product is approved elsewhere in the world, the SFDA is still likely to require the foreign manufacturer to conduct at least one study in China before approval.

What is a Schedule 3 or 4 drug?

Schedule III: Drugs with low to moderate potential for abuse and/or addiction, but less dangerous than Schedule I or II. These drugs can be obtained through prescription, but generally are not available over the counter. Schedule IV: Drugs with viable medical use and low probability of use or misuse.

The schedule the drug is placed under depends on its medical use, its potential for abuse, and its safety or how easily people become dependent on it. Discovery Place in the beautiful hills of Tennessee offers long-term recovery programs for those who are suffering from drug and alcohol addiction. Most staff members have been through the program themself and know what it takes to heal from the devastating effects of drug and alcohol addiction. At Discovery Place, we provide psycho-education on the classifications of drugs among others for individuals to understand the addiction process and begin a life of recovery. Inhalants are consumed by inhaling chemicals from various products.

Drug Classification

The control of drugs through law exists to protect people from the harm that these drugs can do. It is based on research from many different sources into the potential harmfulness of the drug, both to individuals and to society. We will give the public the kind of high-quality evidence on drug harms our current crop of politicians apparently do not feel they need before making far reaching decisions around drugs classification. In 2014, the Drug Enforcement Administration requested the assistance of the Food and Drug Administration in conducting an analysis on the implications of downgrading marijuana to a lesser schedule.

What Is a Stage 2 drug?

Schedule II

Schedule II drugs, substances, or chemicals are defined as drugs with a high potential for abuse, with use potentially leading to severe psychological or physical dependence. These drugs are also considered dangerous.

They also cause a range of negative effects, including vomiting, chest pain, and tremors. Amphetamines, methamphetamine, and cocaine are all classed as stimulants. By noting the class of a drug, you and your healthcare team can understand what to expect from it. That includes the risks and which others drugs you can switch to. Drugs are classified by how they work, what they treat, and their chemical structure.

Drug Resistance

Given the toxicity and relative weakness of the traditional second-line drugs, ethionamide, cycloserine, and PAS, we believe contemporary regimens for treating MDR-TB and XDR-TB should include newer agents in their place. A recent MDR Survival Guide notes the importance of linezolid and clofazimine in the treatment of MDR-TB, with mounting evidence for the efficacy eco sober house boston and tolerability of bedaquiline and delamanid. Class IA agents slow conduction through the atria, AV node, and His-Purkinje system and suppress conduction in accessory pathways. Class IA agents also exhibit anticholinergic and mild negative inotropic effects. Transitions among resting, activated, and inactivated states are time and voltage dependent.

What are the 4 different categories of drugs and give an example of each?

  • Depressants These are drugs that slow or depress the functions of the central nervous system and brain.
  • Stimulants: Drugs that accelerate up the central nervous system are called stimulants.
  • Opioids: Drugs that are used to suppress physical pain are called analgesics or opioids.

This article discusses each of the five schedules of controlled substances and the different substances found under each classification. It also covers what you need to know if your doctor prescribes a controlled substance. Hallucinogens are mostly known for their visual and auditory hallucinations.


And, while they are dangerous and have severe health risks, they aren’t as addictive as other drugs. Psychoactive drugs also cause mental, physical, and personal issues. For example, psychosis, liver disease, and money issues are risks of these drugs. Bupropion—A member of the drug class aminoketones used for the treatment of depression. The mechanism of action is unknown but may be related to preventing the reuptake of neurotransmitters, brand name Welbutrin . The thousands of drug classes and subclasses can be classified in several ways.

  • The USP DC was initiated by stakeholder feedback to meet evolving public health needs.
  • Schedule 1 drugs, however, do not have any accepted medical use and cannot be acquired with a prescription.
  • With a partial agonist, the receptor activity reaches an intermediate maximum lower than the maximal activity (150% of CA).
  • An antiarrhythmic agent can stop ongoing reentry that is already present or can prevent it from starting if the drug depresses or, alternately, improves conduction.
  • Here, we want to briefly define each classification of drugs and list some common drugs under each schedule.

Schedules 3 have a lower risk for dependence and may be prescribed for medical treatment. Schedule 4 and 5 drugs have a lower potential for abuse. Most people have heard that drugs are “classified” on certain schedules. However, it can be confusing to understand exactly what this drug schedule classification means.

Versions of USP Drug Classification

The enzyme cytochrome P-450 is needed to metabolize propafenone, to hydroxylate several beta blockers, and to biotransform flecainide. Lack of this enzyme (in approximately 7% of patients) reduces metabolism of the parent compound and thereby leads to increased plasma concentrations of the parent drug and reduced concentrations of metabolites. Propafenone is metabolized by CYP450 to a compound with slightly less antiarrhythmic and beta-adrenergic blocking effects, as well as fewer central nervous system side effects. Thus, poor metabolizers may experience more heart rate slowing and neurotoxicity than extensive metabolizers do. Abuse of the drug or other substances may lead to limited physical dependence or psychological dependence relative to the drugs or other substances in Schedule IV. Schedule V drugs include cough medicines with codeine. These drugs and substances have a low potential for abuse relative to those in Schedule III. The drug or substance has a currently accepted medical use in treatment in the United States.

classes of drugs

I spent 6 months in their programs, participating in all three phases, and was met with kindness and love all along the way. It is unbelievable to me, where I am now relative to where I was when I arrived at DP. They showed me the tools that I’ve tried to use everyday in my life to think less often of myself, and more frequently of others.

ATC Classification System

The drug or substance has a low potential for abuse relative to those in Schedule IV. The drug or other substance has a currently accepted medical use in treatment in the United States. At the same time, some drugs can be under one classification but may not be together under another. Since the inception of the CSA Act, drugs have been added, removed, or reclassified to a different schedule.

classes of drugs

Controlled substances give the government a way to organize and categorize different drugs, based on their tendency to be addictive or on their potential to harm the general public. AADs can slow the spontaneous discharge frequency of an automatic pacemaker by depressing the slope of diastolic depolarization, shifting the threshold voltage toward zero, or hyperpolarizing the resting membrane potential. In general, most AADs in therapeutic doses depress the automatic firing rate of spontaneously discharging ectopic sites while minimally affecting the discharge rate of the normal sinus node. Other agents act directly on the sinus node to slow heart rate, whereas drugs that exert vagolytic effects, such as disopyramide and quinidine, can increase the sinus discharge rate.

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