the 15 Most Dangerous Drugs

the 15 Most Dangerous Drugs

Drug overdoses are now the leading cause of accidental death in the United States. In fact, more Americans die of drug overdoses than in car accidents each year. In light of these staggering statistics, 24/7 Wall St. recently conducted a new study that reviewed and categorized 25 of the most dangerous drugs and drug mixtures. Researchers took into account side effects and death rates tracked by the federal government, as well as potential risk of drug combinations measured by medical information organizations and web sources such as MedScape, WebMD, and the American Medical Association.

The substances on this list span well-known prescription medications, infamous street drugs, and lethal combinations of both. Many of these drugs are generally considered to be safe when taken on their own and under the correct conditions. However, all drugs can be fatal when too much is taken or combined inappropriately with other substances.

Here are the the 15 Most Dangerous Drugs

1. Acetaminophen (Tylenol)

Common names for Acetaminophen include Tylenol, Mapap, and Feverall. This drug is regularly used for pain relief and is considered to be the most dangerous on this list due its potential to cause liver damage and toxicity. Acetaminophen is the nation’s leading cause of acute liver failure, according to data from an ongoing study funded by the National Institutes for Health. Analysis of national mortality files shows about 450 deaths occur each year from acetaminophen-associated overdoses; 100 of these are unintentional. Analysis of national databases also show that Acetaminophen-related overdoses account for about 50,000 emergency room visits and 25,000 hospitalizations yearly.  

2. Alcohol

Alcohol includes all types of beer, wine, and malt liquor. Alcohol ranks second on this list due to the extensive health problems and injuries associated with use. An estimated 88,000 people die from alcohol-related causes annually. In addition to causing health issues such as cancer, liver damage, hypertension, heart disease, and fetal damage, alcohol abuse increases the risk of injuries, suicide, violence, and motor accidents. Due to these factors, excessive alcohol consumption is the third-leading cause of death in the United States.

3. Benzodiazepines

Benzodiazepines, sometimes called “benzos,” are anti-anxiety medications that include Xanax, Valium, and Klonopin. Benzodiazepine drugs rank high on this list due to the high prescription rate and increased risk of deadly respiratory depression that occurs when taking the medications. The risk of experiencing negative side effects is significantly heightened when combined with other drugs, particularly barbiturates, opioids, and alcohol. According to the Centers for Disease Control and Prevention (CDC), benzos were involved in 31% of all overdose deaths during the year 2017.


4. Anticoagulants

Common anticoagulants include Warfarin, Xarelto, and Heparin. These medicines are used to prevent blood clots in patients that are deemed at-risk for clotting. Anticoagulants rank fourth on this list due to the serious health conditions that can result from use, such as strokes, transient ischemic attacks (TIAs), heart attacks, deep vein thrombosis (DVT), and pulmonary embolism. When combined with Aspirin and other blood-thinning drugs, anticoagulants can also cause fatal internal and/or external bleeding.

5. Antidepressants

Common antidepressants include Cymbalta, Wellbutrin, Prozac, and Zoloft. Antidepressant drugs are commonly used to treat major depression and mood disorders, but are also occasionally prescribed for attention deficient hyperactivity disorder (ADHD), obsessive compulsive disorder (OCD), and anxiety disorders. These drugs are high on this list due to the adverse health effects long-term use can have on consumers. Those taking antidepressants have a 33% higher risk of dying prematurely than people who are not taking the drugs. Additionally, antidepressant users are 14% more likely to have an adverse cardiovascular event, such as a stroke or heart attack. 

6. Anti-Hypertensives

Anti-hypertensives are a class of drugs that are used to treat hypertension (high blood pressure), such as Hytrin, Cardura, and Minipress. These drugs have been linked to cardiovascular issues, acute renal failure, prostate cancer, and new-onset diabetes in consumers – all of which can result in death. When combined with NSAIDs or diuretics, the possibility of experiencing these health risks is amplified and can lead to fatality.

7. Bromocriptine

Bromocriptine, also known as Parlodel, is used to treat symptoms of Parkinson’s disease and hyperprolactinemia (high levels of a natural substance called prolactin in the body) including lack of menstrual periods, milky discharge from the nipples, infertility, and hypogonadism. Bromocriptine ranks seventh on this list due to the potential severe health side effects that can occur in patients, such as lethal circulatory collapse. Systematic hypotension has also been documented in about 33% of people taking the medication. Additionally, the drug has been associated with somnolence, and episodes of sudden sleep onset, which has resulted in dangerous encounters and motor vehicle accidents.

8. Clarithromycin

Clarithromycin, also known as Biaxin, is an antibiotic used to treat certain bacterial infections such as pneumonia and bronchitis. The FDA is currently advising caution before prescribing Clarithromycin due the increased risk of fatal heart complications that can occur years later. In fact, consumers are at a 27% increased risk for cardiovascular death if they have taken Clarithromycin at some point in their lives. It is unclear why this medication causes such effects, but the risk of experiencing them is amplified when the drug is combined with calcium channel blockers, such as Lipitor.

9. Clozapine

Clozapine is an antipsychotic medication used to treat schizophrenia. It can also lower the risk of suicidal behavior in patients with schizophrenia or schizoaffective disorder. Clozapine breaks the top ten in this list due to the negative cardiovascular effects that can occur, including myocarditis and cardiomyopathy. The risk of experiencing these effects is significantly increased when combined with other central nervous system depressants, such as alcohol. Clozapine has also been documented as causing gastrointestinal hypomotility or “slow gut,” which can result in severe constipation, bowel obstruction, and even death.


10. Cocaine

Cocaine, also known as “blow,” “coke,” and “crack,” is a strong stimulant that is used as a recreational drug. Cocaine comes in at number ten on this list due to the long-term health risks that can occur from use, including heart disease, hypertension, organ failure, respiratory distress, stroke, unhealthy weight loss, and seizures. According to the CDC, cocaine deaths have been rising in recent years and show no sign of slowing down. In the year 2017, around 14,000 cocaine-related overdose deaths occurred in the U.S. alone. Researchers found that nearly three-quarters of these deaths involving the drug were among people who had also taken opioids.

11. Colchicine

Colchicine is a medication used to treat and prevent gout attacks, as well as some other inflammatory conditions. Colchicine is considered a high-risk medicine by the U.S. Food and Drug Administration (FDA) due to its ability to cause significant toxicity and death. The drug has a very narrow therapeutic index, which means that the range between therapeutic and toxic doses is small, and is some cases it can overlap. Fatal overdose has been documented as resulting from as little a dose as 0.5 mg/kg. The risk of overdose is significantly increased when colchicine is combined with strong CYP3A4 inhibitors – a mixture that usually results in death.

12. Cough Medicines

Common cough medicines include NyQuil, Robitussin, and Theraflu. These medications are used to relieve cough caused by the common cold, bronchitis, and other breathing illnesses. Cough medicines come in at number twelve on this list due to the high risk of abuse and multiple adverse effects that can occur in consumers. The main ingredient in cough medicines is dextromethorphan (DXM) which can create intoxication, hallucinations, and dissociation in large doses. Overdose can occur when too much is taken and result in severe sedation and fatal respiratory depression. Hypoxia has also been documented as occurring, which can have short- and long-term mental effects on the nervous system, including coma, permanent brain, damage and death. These medicines are often misused in combination with other drugs, such as alcohol and marijuana, which can additionally increase the risk of deadly overdose.


13. Digoxin

Digoxin, also known as Lanoxin, is a medication used to treat various heart conditions, including congestive heart failure and arterial fibrillation (AFib). Ironically, new research suggests that for people who have atrial fibrillation, taking the drug may increase the risk of dying by more than 20%. Digoxin has also been linked to nausea, vomiting, and severe gastrointestinal issues such as constipation and perianal infections. These negative side effects are more likely to occur when the medication is combined the anti-arrhythmic agent Quinidine, which can also result in overdose and death.

14. Heroin

Heroin is an illicit recreational opioid drug made from morphine; a natural substance taken from the seed pod of the various opium poppy plants. Typically injected or snorted, the drug is available as either a white or brown powder, or a black sticky substance known as black tar heroin. Heroin comes in at fourteen on this list due to the high prevalence of use and serious health complications it causes in users, including: collapsed veins for people who inject the drug, damaged tissue inside the nose for people who sniff or snort it, infection of the heart lining, lung complications, gastrointestinal abscesses, and kidney disease. According to the CDC, the number of heroin users has more than doubled over the past five years and approximately 80% of new users are coming to heroin after having abused prescription opioids. In 2016, opioid overdoses, including those related to heroin, accounted for more than 42,000 deaths in the U.S. alone.

15. Semi-Synthetic Opioids

Common semi-synthetic opioids include Percocet, Vicodin, and OxyContin. These medications are generally used to treat moderate to severe pain, although some can be prescribed for coughing and diarrhea. These drugs are highly addictive and present a high risk of misuse. Semi-synthetic opioid misuse can cause slowed breathing, which often results in hypoxia, a condition that results when too little oxygen reaches the brain. Hypoxia can induce coma, permanent brain damage, and even death. Opioids are also often combined with other drugs to increase intoxication, including cocaine and alcohol, which significantly raises the risk of fatal overdose. America is currently undergoing an opioid epidemic due to the prevalence and high overdose rate of opioid drugs, making this the final most dangerous category of drug on the countdown.



Always Take Medications Responsibly

Although all of these drugs are highly dangerous, this is simply the list of the top 15; there are countless more that result in the deaths of thousands of Americans each year. It’s important to remember that all drugs can be dangerous when not taken properly or in combination with other substances, including prescription medications.