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- Impaired memory
- Blackouts
- Poisoning
- Nerve Damage
- Liver disease
- Confusion
- Depression
- Severe anxiety
- Muscle tension
- Addiction
- Hallucinations
- Suffocation
- Muscle spasms
- Heart attack
- Sudden sniffing death
- Panic attacks
- Risk of heart attack
- Depression
- Schizophrenia
- Addiction
- Severe dental problems
- Stroke
- Heart attack
- Death with first use
- Addiction
- Anxiety and aggression
- Respiratory failure
- Heart attacks
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