The manufacturing, availability, and use of drugs, in general, can be both good and bad. Some drugs, like ibuprofen and antihistamines, can help people with pain, inflammation, and allergies without serious side effects or high risk of addiction while other, more dangerous drugs can be powerful, addictive, and cause a number of unwanted side effects and complications. Of all the drugs available on the legal and illegal markets, there are five that are considered the most dangerous.  

What Makes a Drug Dangerous?

Any drug, sold legally or illegally, can be dangerous if abused. Consuming too much of any substance — whether it is an over-the-counter drug, prescription drug, or illicit drug — can cause severe health complications and in some cases result in death. 

However, some drugs are more dangerous than others based on how powerful they are and how addictive they can be. Many illegal drugs, like cocaine, heroin, and methamphetamine (meth), are illegal primarily because of these factors. All three of these illegal drugs are powerful and highly addictive. They also possess a series of serious side effects that can have negative effects on a person’s health and wellbeing. Serious negative side effects, high risk for addiction, and high potency are all important factors in determining how dangerous any drug is.         

Top 5 Most Dangerous Drugs

In no particular ranking or order, these are the top 5 most dangerous drugs based on their potency, risk-level for addiction, and potential side effects: 

1. Cocaine

Cocaine is an illegal, highly powerful, and a highly addictive stimulant drug. The effects of cocaine consumption can be felt by a user almost immediately, making them feel euphoric, energetic, alert, and hypersensitive. However, a cocaine high is a fleeting high. Most users will only feel the effects of cocaine for anywhere from 5 to 30 minutes. Because of this, users will typically ingest cocaine several times when consuming the drug — in order to attempt to maintain their high. This makes cocaine an extremely powerful and addictive substance. 

Cocaine use also comes with a variety of unwanted side effects. According to the National Institute on Drug Abuse, routine cocaine use can result in

  • Nose bleeding
  • Loss of smell
  • Headache
  • Abdominal pain
  • Nausea
  • Seizure
  • Stroke
  • Irregular heartbeat
  • Heart attack
  • Coma
  • Death

2. Heroin

Unlike cocaine, heroin is a highly powerful and addictive depressant. Instead of giving users a burst of energy and productivity, heroin does the opposite; it slows down bodily functions and interactions, providing something closer to a calming effect. Heroin is also a powerful pain reliever; the opium within heroin blocks pain signals sent between the brain and body — often providing users with euphoria. Altogether, heroin is another highly potent and addictive drug.  

Despite its powerful pain relief and addictive potential, heroin also has a set of negative side effects for users. According to the National Institute on Drug Abuse, the effects of heroin use can include

  • Dry mouth
  • Flushing of the skin
  • Nausea
  • Itching
  • Drifting in and out of consciousness
  • Insomnia
  • Constipation
  • Collapsed veins (when injected)
  • Infections in the heart lining and valves
  • Abscesses
  • Liver disease
  • Kidney disease
  • Lung complications
  • Mental disorders
  • Sexual dysfunction
  • Hypoxia (not enough oxygen reaching the brain)
  • Death

3. Methamphetamine

Methamphetamine is another powerful and highly addictive stimulant. This drug, like the other dangerous drugs on this list, affects an individual’s central nervous system. Methamphetamine, however, has a more powerful ability to affect an individual’s brain. While this effect increases the euphoria and energy a person feels when consuming meth, it also makes the drug more addictive and more dangerous. 

According to the National Institute on Drug Abuse, the side effects of consuming methamphetamine include

  • Increased energy
  • Increased alertness
  • Decreased appetite
  • Rapid and/or irregular heartbeat
  • Hyperthermia
  • Psychosis (paranoia and/or hallucinations) 
  • Deficits in thinking
  • Deficits in motor skills and coordination    
  • Increased distractibility
  • Memory loss
  • Aggressive or violent behavior
  • Mood disturbances
  • Dental problems
  • Weight loss
  • Death

4. Benzodiazepines

Benzodiazepines are drugs that can be prescribed by a doctor, but they are also highly powerful and addictive. Oftentimes, benzodiazepines are prescribed to an individual to treat anxiety disorders and/or sleep disorders. These drugs work by affecting different neurotransmitters in the brain, forcing them to send signals in the brain to calm a person or help them sleep. But, because they often work so well, individuals taking them can start to depend on them, which typically leads to addiction. 

When used as prescribed, the side effects of benzodiazepines are lessened; however, side effects of benzodiazepine when used as prescribed can include: 

  • Confusion
  • Drowsiness
  • Dizziness
  • Impaired coordination
  • Depression
  • Increased anxiety

When used more than prescribed, the side effects of benzodiazepine use can include: 

  • Memory problems
  • Behavioral changes
  • Delirium
  • Increased risk of dementia
  • Death

5. Fentanyl  

Fentanyl, like heroin, is an opioid. However, fentanyl is not made from naturally occurring opium found in poppy plants; fentanyl is made from synthetic opioids. This makes the drug extremely powerful. In fact, fentanyl can be up to 100 times more potent than morphine, which consists of natural, non-synthetic opium. Like heroin, fentanyl is a depressant that slows bodily functions and provides immense pain relief, making it highly addictive. 

According to the National Institute on Drug Abuse, the side effects of fentanyl use can include

  • Confusion
  • Constipation
  • Drowsiness
  • Nausea
  • Sedation
  • Problems breathing
  • Unconsciousness
  • Death    

Searching for Drug Addiction Treatment in Your Area? 

If you or a loved one are living with drug addiction, help is available in your area! At Knoxville Recovery Center, our addiction specialists can administer a treatment program that is right for you or your loved one, addressing the root cause of addiction. With our team of professionals, we can help you or your loved one live a happier, healthier, and sober life. Contact us today for more information on all of our addiction treatment options! 

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