A fatal overdose from cannabis alone has not been documented in clinical literature. However, consuming too much — particularly through edibles — can produce a highly uncomfortable experience.
**Signs of consuming too much cannabis:**
- Rapid heart rate
- Intense anxiety or panic
- Nausea or vomiting
- Confusion or disorientation
- Extreme sedation
This is sometimes called "greening out." It is temporary and not life-threatening, but it can be distressing.
**What to do:**
- Move to a calm, safe environment
- Drink water
- Eat something
- Lie down if dizzy
- Wait — effects will pass
The primary risk factors are edibles (due to delayed onset leading to overconsumption) and high-potency products consumed by inexperienced users.
Starting with low doses and waiting before consuming more is the most effective preventive measure.
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**Sources:**
1. Healthline — [Can You Overdose on Marijuana?](https://www.healthline.com/health/can-you-overdose-on-marijuana)
2. Reddit — r/trees (community posts on overconsumption and recovery)
3. NIDA — [Cannabis (Marijuana) DrugFacts](https://nida.nih.gov/publications/drugfacts/cannabis-marijuana)
