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Methamphetamine: Fast Facts, Hazards and Health Impacts

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Meth Pipe

Methamphetamine (often called meth) is a powerfully addictive stimulant that dramatically affects the central nervous system. The drug is easily made in clandestine laboratories. While at one time, meth was “cooked” in small labs all over America, criminal organizations have taken over production. They use their long-established drug trafficking channels to bring supplies of methamphetamine to every corner of the U.S.

Methamphetamine is typically available in powder or crystalline form. Both forms can be shot, smoked, snorted or eaten. Meth can sometimes be found in counterfeit pills simulating prescription medications such as oxycodone, hydrocodone, Adderall, and Xanax and other medications.

As meth addiction progresses many users stay up for days at a time, taking more of the drug every time they come down. After around 3-4 days of being awake, users can appear psychotic, and at 11 or 12 days, the body's organs may begin failing.

The drug is commonly referred to as:

  • "speed,"
  • "meth,"
  • and "chalk"

In the smoked form, it is often referred to as:

  • "ice,"
  • "crystal,"
  • "crank,"
  • and "glass"

Immediately after smoking the drug or injecting it intravenously, the user experiences an intense rush that lasts a few minutes to half an hour and is described as extremely pleasurable. Snorting or oral ingestion produces euphoria without the initial intense rush. Snorting produces effects within three to five minutes, and oral ingestion produces effects within 15 to 20 minutes. The effects can last as long as 12 hours, which is much longer than the effects of cocaine.

Addict Suffering at Night

Short-term effects of methamphetamine abuse also include:

  • Euphoria
  • Increased focus
  • Decreased fatigue
  • Increased activity
  • Decreased appetite
  • Increased heart rate and blood pressure
  • Higher body temperature

In its manufacture, methamphetamine is processed using harsh, caustic chemicals. As a result, heavy use of this drug is very hard on the user. Additionally, the lifestyle of a methamphetamine user usually creates further damage. All in all, it is one of the most damaging drugs on the illicit market.

Heavy users tend to experience hallucinations and delusions. Users very often develop sores on their face or body from picking at their skin, thinking that there are bugs they can’t see crawling under their skin. “Meth mouth” is also a possible effect of long-term use. As meth use dries up saliva and the drug is so caustic, some meth users suffer extremely damaged teeth which eventually require replacement with dentures.

Man Looking in the Mirror

Meth users typically suffer from poor judgment and may engage in dangerous lifestyles and risky sex. When a person becomes a meth addict, getting the drug becomes far more important than taking care of the home, children or work. The children may go unfed. Animal feces around the home may not be cleaned up. Used diapers may be found all over the home. Drug paraphernalia and drugs may be within reach of children. If there are children in the home of confirmed meth users, families should take effective action as the children of meth users may come to harm due to neglect, abuse or worse.

Other long-term effects of heavy methamphetamine use include:

  • Anxiety and confusion
  • Insomnia
  • Erratic behavior
  • Depression and mood swings
  • Psychotic episodes
  • Paranoia
  • Hallucinations
  • Weight loss
  • Addiction

Methamphetamine use can trigger a variety of cardiovascular problems. These include rapid heart rate, irregular heartbeat, increased blood pressure, and irreversible, stroke-producing damage to small blood vessels in the brain. Dangerously high body temperature and convulsions can occur with methamphetamine overdoses, which, if not treated immediately, may result in death.

Chronic methamphetamine abuse can result in inflammation of the heart lining. Those who inject the drug may also experience damaged blood vessels and skin abscesses. Heavy users also manifest psychotic episodes, progressive social and occupational deterioration. Psychotic symptoms can sometimes persist for months or years after use has ceased.

An overdose of methamphetamine can cause overheating to the point of convulsions, cardiovascular collapse or death. Each year, methamphetamine is involved in nearly 30,000 drug-related deaths.

Pervitin (Drug)
Pervitin

At one time, methamphetamine was used in inhalers as a treatment for asthma. At that time, it was sold over the counter as benzedrine. During World War II, methamphetamine tablets were handed out to German, Japanese and American soldiers and pilots to keep them awake during long military actions. Some German officers thought that methamphetamine was a way to develop the superhuman soldiers they wanted for a win. The meth fed to German soldiers was called Pervitin.

When the war ended for Japan, they had huge stockpiles of meth left over that they no longer needed for their pilots. They then began to distribute the unused drug to the Japanese public, creating an epidemic of methamphetamine addiction. The drug soon began to be restricted in country after country, with medical forms of the drug continuing to be sold under strict regulation. In the U.S., prescription methamphetamine is currently called Desoxyn.

WW2 Planes

In 1980, the U.S. government tightened restrictions on selling ephedrine, a cold medication needed to make meth in small, domestic labs. Drug dealers making meth just switched to another cold medication, pseudoephedrine. More people started making meth in small labs after detailed instructions were published on the internet in the 1990s.

Soon, more laws were passed to try to restrict the manufacture of this addictive substance. In the teens of the new millennium, foreign chemical manufacturers began making this drug and sending it into the U.S. on the same trafficking channels that had long been used to traffic heroin and marijuana. Before long, the meth that was being moved into the U.S. was more potent than anything that had been seen before. Areas with high meth abuse began to struggle with an increased number of mental health cases.

Meth booklet cover
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What are methamphetamine's effects?

Meth causes increased activity and energy, along with sleeplessness, a rush of euphoria and a sense of well-being. Users feel confident and talkative. Meth users often stay up for extended periods, sometimes for several days, before they crash and sleep for many hours or even days. Meth users also experience confusion, anxiety and may become violent. Meth users and addicts often stop taking care of themselves, neglect their health and have very poor diets as they have little or no appetite.

What are methamphetamine's long-term effects?

When methamphetamine is used for an extended period, users often lose weight, becoming gaunt and haggard. Methamphetamine also creates severe mental changes in users that often include paranoia, aggression, irritability and even psychosis. Increased strain on the heart and accelerated heart rate can predispose the user to stroke.

Methamphetamine users are prone to other illnesses due to their risky lifestyles, including illnesses such as hepatitis C, HIV, and sexually transmitted diseases. Some meth users suffer from “meth mouth,” destruction of the teeth due to reduced production of saliva and the caustic character of the drug. Meth users in recovery sometimes must have all their teeth pulled and replaced with dentures.

What happens when people abuse the drug?

Methamphetamine is a very strong stimulant. With some methods of administration, there is a fast “rush” of euphoria followed by a long period of less intense euphoria. When meth is ingested, there is no rush but the high may last for as long as twelve hours.

The user feels more energetic and does not sleep normally and loses their appetite. It is common for meth addicts to lose large amounts of weight and look gaunt, thin and undernourished. They will probably appear unusually active but may also act nervous and anxious.

The user is likely to get overheated and may appear sweaty without it being hot or there being any physical exertion. Pupils will be dilated and blood pressure will also increase.

Where is methamphetamine made?

Methamphetamine coming into the U.S. is primarily made in Mexico from chemicals coming from overseas sources. Smaller amounts of meth are made in Europe or Afghanistan, There are still some small-scale labs in the United States. Many of these smaller labs are involved in converting liquid meth from a foreign lab to crystalline form.

How widespread is methamphetamine consumption around the world?

Consumption varies greatly from country to country. Little methamphetamine abuse exists in Europe except for the Czech Republic and the Slovak Republic. Recent large seizures in Nordic countries suggest that consumption is increasing in that region. Meth production sites are located in countries such as the Netherlands, Belgium, and the Czech Republic.

Elsewhere in the world, Australia has one of the highest rates of methamphetamine use in the world. Meth is the primary drug of concern in the Philippines. According to the United Nations Office on Drugs and Crime, methamphetamine seizures are high in South Asia, especially in India and Bangladesh.

Do methamphetamine users go through withdrawal when they quit using the drug?

Yes, methamphetamine users suffer severe irritability, fatigue, depression, anxiety, sleep problems, drowsiness, nausea, sweating and shaking. They also go through strong cravings for the drug. After the acute period of withdrawal passes, some of these symptoms may persist for months.

Is recovery from methamphetamine addiction possible?

Yes, a methamphetamine addict can successfully recover from addiction. A drug recovery program that helps a methamphetamine addict rebuild their body as well as their emotional health and mental ability is the best choice. In Narconon centers, those in recovery from meth are started on generous doses of the nutritional supplements that are specifically indicated in cases of recovery from addiction. Mineral drinks help soothe the discomfort, irritability and anxiety of those in recovery.

How is methamphetamine different from other stimulants like cocaine?

Methamphetamine is classified as a psychostimulant, as are amphetamine, cocaine and many other synthetic drugs. Although these stimulants have similar physiological effects, there are some major differences in the way they work. Methamphetamine causes the brain to experience an artificially high level of the neurotransmitter dopamine. This produces the physical stimulation and euphoria that the user experiences. While cocaine is quickly removed from the body, methamphetamine has a much longer duration of action. This results in methamphetamine being present in the brain longer, which ultimately leads to prolonged stimulant effects.

If you see signs of methamphetamine use in someone you care about, you need to find them help at the first moment possible. Meth is so addictive that some people may become addicted after just a few uses. For a few people, it may take just one use. You may have to intervene in this person's life to get them to a Narconon drug and alcohol rehabilitation center that can help.

New Life Detox Center

One of the most significant ways that the Narconon program can help a methamphetamine addict is by offering the Narconon New Life Detoxification, one phase of the overall treatment program. This phase combines time in a low-heat sauna accompanied by moderate daily exercise and a strict nutritional regimen. According to a 2018 peer-reviewed study, this combination helps alleviate post-acute withdrawal symptoms as well as clarifying thinking and reducing cravings.

The Narconon New Life Detoxification is a vital step for the methamphetamine addict doing the Narconon program. This detoxification step, combining time in a dry-heat sauna with exercise, flushes out the residual toxins that can make recovery so torturous. Many addicts have stated that this step reduces or even eliminates cravings for drugs.

Given the high addictiveness of methamphetamine, it is often advisable for recovering addicts to choose residential drug rehabs that operate longer-term recovery programs. This gives the addicted person the time to develop the physical stamina that will support the work of building a new, drug-free life. Narconon programs around the world have helped methamphetamine addicts repair the damage of addiction and live lasting, sober lives again.

If you are trying to help someone who is addicted to methamphetamine, call today to find out how the Narconon drug rehab program can help.

Sources:
  1. CDC “Provisional Drug Overdose Death Counts.” Centers for Disease Control and Prevention, 2025. Article ↩︎
  2. Anglin MD, Burke C, Perrochet B, Stamper E, Dawud-Noursi S. “History of the methamphetamine problem.” National Library Of Medicine, 2000. Paper ↩︎
  3. State of Arkansas “The Originals of Meth.” Department of Human Services, Arkansas, 2025. Article ↩︎
  4. OPB “Meth has changed and it’s sabotaging Oregon’s mental health system.” Oregon Public Broadcasting, 2022. Article ↩︎
  5. US State Dept. “International Narcotics Control Strategy Report.” U.S. Department of State, 2025. Document (PDF) ↩︎
  6. EUCRIM “New Reports on European Illicit Markets for Cocaine and Methamphetamine.” EUCRIM, 2022. Article ↩︎
  7. Australian Strategic Policy Institute “20 years after the first Australia meth epidemic, another is upon us.” The Strategist, 2024. Article ↩︎
  8. Republic of the Phillipines “2023 Statistical Analysis.” Dangerous Drugs Board, 2023. Statistics ↩︎
  9. UNODC “South Asia: Synthetic drug use soars worldwide as South Asia grapples with opiate challenge.” United Nations Office of Drugs and Crime, 2025. Report ↩︎
  10. NIDA “Methamphetamine.” National Institute on Drug Abuse, 2024. Article ↩︎
  11. NIH “Safety and tolerability of sauna detoxification for the protracted withdrawal symptoms of substance use.” National Library of Medicine, 2018. Study ↩︎
  12. Narconon “New Life Detoxification.” Narconon, undated. Article ↩︎