The dangers of stimulants include heart attack, stroke, seizures, dangerously high body temperature, paranoia and psychosis, on top of a strong risk of addiction. Higher doses, smoking or injecting, and mixing drugs all push those risks up. And now there’s one more: street cocaine and meth can be laced with fentanyl.
Stimulants run from the coffee in your mug to methamphetamine, and they aren’t all equally risky. So what separates them, and when does stimulant use become something to take seriously?
What Are Stimulants?
Stimulants speed up the central nervous system. Most raise levels of dopamine and norepinephrine, chemical messengers behind alertness, focus, energy and pleasure. That’s why people on them feel sharp, confident and wide awake, and why the brain starts wanting more.
Some are legal and mild, like caffeine and nicotine. Some are prescription medications for ADHD and narcolepsy. Cocaine and methamphetamine are illegal and highly addictive.
Examples of Amphetamines
Amphetamines are one family of stimulants. Common examples:
- Amphetamine salts (Adderall)
- Dextroamphetamine (Dexedrine)
- Lisdexamfetamine (Vyvanse)
- Methamphetamine, sometimes prescribed in a regulated form but far better known as the illegal drug meth
Methylphenidate (Ritalin, Concerta) is a related ADHD stimulant. Technically it isn’t an amphetamine, but it carries similar misuse risks.
Common Stimulants and Their Dangers
| Stimulant | Legal status | Main dangers |
|---|---|---|
| Caffeine, nicotine | Legal | Dependence; nicotine is highly addictive and tobacco causes serious disease |
| Prescription stimulants (Adderall, Vyvanse, Ritalin) | Prescription only | Misuse at high doses can cause irregular heartbeat, high body temperature, paranoia and addiction |
| Cocaine and crack | Illegal | Chest pain, heart attack, stroke, seizures, lung damage when smoked |
| Methamphetamine | Illegal (rare prescription use) | Long-lasting high, severe dental problems, skin sores, psychosis, brain changes |
| MDMA (ecstasy, molly) | Illegal | Overheating, dehydration, heart strain; pills often contain other drugs |
| Synthetic cathinones (“bath salts”) | Illegal | Unpredictable strength, agitation, paranoia, violent behavior |
For a closer look at two of the most dangerous drugs on this list, see our comparison of crack vs. meth.
How Stimulants Damage the Heart and Brain
The heart
Stimulants raise heart rate and blood pressure and narrow blood vessels. NIDA notes that cocaine has well-recognized toxic effects on the heart: people who use it can have chest pain that feels like a heart attack, plus a higher risk of stroke and inflammation of the heart muscle. Being young and healthy doesn’t make you immune.
The brain and mind
High doses can bring on anxiety, paranoia, hallucinations and psychosis. According to NIDA, people who use methamphetamine long term can develop paranoia, hallucinations and delusions that last for months or years after they stop. Meth also changes the structure of brain areas tied to emotion and memory. There’s real hope here, though: NIDA reports that some of those changes improve with long-term abstinence.
Signs of a stimulant overdose
- Chest pain or a racing, irregular heartbeat
- Very high body temperature, heavy sweating or hot, dry skin
- Severe agitation, paranoia or hallucinations
- Seizures
- Trouble breathing, confusion or loss of consciousness
Any one of these is a medical emergency. Call 911. Since the supply may contain fentanyl, give naloxone (Narcan) if the person is unresponsive or breathing slowly.
Prescription stimulants are not risk-free
Adderall and similar medications come from a pharmacy, so plenty of people assume they’re safe to borrow or take in bigger amounts. College students use them to cram. Parents use them to keep up, and workers lean on them to push through long shifts. Outside a doctor’s care, they can cause the same problems as other stimulants: a racing heart, high blood pressure, sleeplessness, anxiety and, at high doses, paranoia. Crushing and snorting the pills makes all of that worse, and a lot of people slide from now-and-then use into needing them to function.
Can’t get through a day without them? Getting them from more than one source? Pay attention to that.
Fentanyl Has Changed the Risk
The CDC warns that powdered fentanyl looks just like many other drugs and can be mixed into cocaine and methamphetamine. People who use stimulants usually have no opioid tolerance, so even a small amount can stop their breathing. Counterfeit “Adderall” bought online or from friends carries the same risk.
The Crash and the Cycle of Addiction
What goes up comes down. As a stimulant wears off, people often crash into exhaustion, low mood and irritability. The quickest way out of that feeling is another dose, and that’s how a weekend habit turns into a daily one.
Some people start using stimulants to keep up: to study longer, work double shifts or lose weight. Others start at a party. Once the brain depends on the drug to feel normal, the cycle looks the same either way.
Getting Help for Stimulant Addiction
Stimulant addiction responds well to structured treatment. That means a safe place to get through the crash, behavioral therapy to change the patterns that keep you using, and support that lasts past the first few weeks. Learn more about our treatment for meth addiction and cocaine addiction, or about our residential program.
Frequently Asked Questions
What are the dangers of stimulant drugs?
Stimulants can cause heart attack, stroke, seizures, overheating, paranoia and psychosis, and they carry a high risk of addiction. Street stimulants may also contain fentanyl.
Are prescription stimulants dangerous?
Taken as prescribed and monitored by a doctor, they’re generally used safely to treat ADHD and narcolepsy. The danger comes with misuse: higher doses, crushing or snorting pills, or taking someone else’s prescription.
What are examples of amphetamines?
Common examples include Adderall, Dexedrine, Vyvanse and methamphetamine.
What does a stimulant overdose look like?
Warning signs include chest pain, a racing heart, very high body temperature, severe agitation, seizures and confusion. Call 911 right away.
Find Help at Covenant Hills
At Covenant Hills, we treat stimulant addiction with clinical care, a supportive community and, for those who want it, a faith-based path through recovery. You don’t have to keep running on empty. Call 800-662-2873 for a free, confidential assessment.
