Cannabis overdose — often called "greening out" — happens when someone takes in more THC than their body can comfortably process. It is genuinely distressing but rarely dangerous on its own, and there is no documented case of a healthy adult dying from cannabis alone. The real risks are severe panic, vomiting, dehydration, and accidents, plus far greater danger for children and pets who swallow edibles.

is it possible to overdose on cannabis

Key Features: What a Cannabis Overdose Looks Like

• Fast heartbeat, sweating, nausea, and vomiting are the most common physical signs.
• Panic, paranoia, and a distorted sense of time are the leading psychological effects.
• Smoked or vaped cannabis can hit within minutes; edibles may take one to three hours.
• Very high doses can cause confusion, slurred speech, and brief fainting.
• Mixing cannabis with alcohol or sedatives raises the risk of a serious reaction.
• Children and pets who eat edibles or oils need emergency care right away.
• Effects usually peak within a few hours and fade over six to twelve hours.

Potency is the specification that matters most. A standard adult edible serving in legal markets is around 10 mg of THC, while one long pull on a high-potency vape cartridge can deliver substantially more. Full-spectrum CBD oils carry only trace THC and do not cause the same impairment, but potency labels should always be checked before use.

is it possible to overdose on cannabis

Every CBD product we carry is third-party lab tested, with a certificate of analysis available on its product page. Orders ship within one business day in discreet packaging, and unopened items can be returned within the stated window for a refund or exchange.

Cannabis Overdose Symptoms: What You Need to Know

How much cannabis is too much?

There is no universal number — tolerance, body weight, and delivery method all change the answer. A common guideline is to start with 2.5 to 5 mg of THC and wait at least two hours before taking more, especially with edibles.

Is It Possible to Overdose on Cannabis? Yes, Here's What Happens

What should you do if someone overdoses on cannabis?

Move them somewhere calm, keep them hydrated, and stay with them. Call emergency services if they are unresponsive, struggling to breathe, having chest pain, or if a child or pet was involved.

Can CBD help after too much THC?

Some people report that CBD softens the anxious edge of a THC high, though the evidence is still limited. It will not reverse the effects, so rest, water, and time remain the main remedies.