Substance education
Methamphetamine.
Overheating, cardiovascular injury and prolonged psychological effects can be serious.
Also known as Crystal meth, Ice, Meth. A name does not verify contents.
Immediate effects
Methamphetamine increases nervous-system activity. Sweating, restlessness, raised heart rate and temperature can occur. Effects may outlast those of other stimulants.
Sources & review notes
- Methamphetamine overdose
NIH / MedlinePlus · Published/updated 2025-04-08 · Accessed 2026-09-26 · Acute and long-term harms
Major risks
Severe toxicity can include chest pain, abnormal heartbeat, stroke, seizures, extreme temperature and kidney injury.
Sources & review notes
- Methamphetamine overdose
NIH / MedlinePlus · Published/updated 2025-04-08 · Accessed 2026-09-26 · Acute and long-term harms - Substance use — amphetamines
NIH / MedlinePlus · Accessed 2026-09-26 · Health effects and dependence
Repeated use
Dependence and severe sleep disruption can develop. Persistent paranoia, mood changes, dental problems, weight loss and infections are reported.
Sources & review notes
- Methamphetamine overdose
NIH / MedlinePlus · Published/updated 2025-04-08 · Accessed 2026-09-26 · Acute and long-term harms - Substance use — amphetamines
NIH / MedlinePlus · Accessed 2026-09-26 · Health effects and dependence
Nightlife considerations
Someone who remains awake or active may still be seriously ill. Do not dismiss chest pain, overheating or confusion because a person appears energetic.
Sources & review notes
- Methamphetamine overdose
NIH / MedlinePlus · Published/updated 2025-04-08 · Accessed 2026-09-26 · Acute and long-term harms
Warning signs
Call 911 for chest pain, collapse, seizure, severe confusion with overheating or abnormal breathing. Keep yourself safe and summon medical help if agitation escalates.
Sources & review notes
- Drug use first aid
NIH / MedlinePlus · Published/updated 2026-04-13 · Accessed 2026-09-26 · First aid and emergency assessment - Methamphetamine overdose
NIH / MedlinePlus · Published/updated 2025-04-08 · Accessed 2026-09-26 · Acute and long-term harms
Interaction records
No published pair records are available for this substance. Missing information does not mean a combination is safe.
This resource provides general education, not medical advice or personal clearance to use a substance. No drug or combination is risk-free. For an emergency, call 911.