First thing, the important thing: nobody has ever died from too much cannabis. Not from a joint, not from an edible, not from a dab. The lethal dose is so high it's effectively impossible to reach with anything you'd actually consume. What's happening to you right now feels awful, but it is not dangerous, and it will pass.
This is the calm walkthrough. Read it slowly. You have time.
What's Actually Happening in Your Body
THC is binding to cannabinoid receptors throughout your nervous system. When it's working as expected, that produces relaxation, mild euphoria, the usual stuff. When the dose is too high for your tolerance, the same mechanism produces the opposite — anxiety, paranoia, a racing heart, dry mouth, dizziness, time slowing down, the sense that this will never end.
It will end. Smoked cannabis peaks at 30 minutes and is mostly gone in 2–3 hours. Edibles peak at 1–2 hours and can linger for 4–8 hours, sometimes longer. You're not stuck like this. You're in the middle of a curve that comes back down.
The Self-Calm Sequence
Do these in order. Each one is small. Together they shorten the experience and take the edge off the worst parts.
1. Find a safe, familiar place and sit down
If you're standing, sit. If you're in a crowd, get somewhere quieter. Your bed, a couch, a quiet corner — anywhere with reduced sensory load. Don't try to "ride it out" while walking around in public. Cannabis anxiety is much worse with stimulation.
2. Slow your breathing
Box breathing works well: breathe in for 4 seconds, hold for 4, breathe out for 4, hold for 4. Repeat for a minute or two. This is the single fastest way to interrupt a panic loop. Your racing heart isn't a cardiac event — it's THC plus anxiety. Slowing your breath downshifts both.
3. Drink water
Cannabis causes dry mouth and mild dehydration. Drink a full glass of water, slowly. Cold water is better than warm — the temperature gives your nervous system something to track other than the anxiety.
4. Eat something sweet
Orange juice, fruit, sugar, anything carbohydrate. There's a real (if small) physiological effect: glucose helps reset blood-sugar levels, which a strong cannabis dose can dip. Most of the benefit is grounding — chewing, swallowing, tasting something familiar pulls you out of your head and back into your body.
5. Chew on a few black peppercorns
This one sounds like folklore but has actual chemistry behind it. Black pepper contains beta-caryophyllene, a terpene that binds to the same CB2 receptors cannabis affects, and the effect is calming. Chew 3–4 whole peppercorns, or sniff them straight from the jar. Neil Young famously recommended this in a 2014 interview, but the underlying terpene science is real. Most kitchens have peppercorns. Worth a try.
6. Cool water on your face, or a lukewarm shower
Cold water on the face triggers the mammalian dive reflex — slows your heart rate, calms the nervous system. A lukewarm (not cold, not hot) shower does something similar over a longer time. Both are physical resets that anxiety can't argue with.
7. Take CBD if you have it
CBD modulates THC's effect — high-CBD products taken alongside a too-strong THC dose noticeably soften the anxiety. If you have CBD oil, a CBD tincture, or a high-CBD flower on hand, a small dose helps. This is the most evidence-backed intervention on this list.
8. Citrus — bite into a lemon, or smell one
Lemons contain limonene, another terpene with mood-lifting and anxiety-reducing effects. Citrus peel works best (zest contains the most terpene), but juice helps too. Even sniffing a cut lemon helps some people.
9. Distract yourself with something familiar and gentle
Put on a comedy you've already seen, a comfort show, music you know well. The familiarity is the point. Don't pick up a new horror movie or doomscroll the news. Your brain wants safety signals. Give it the most boring, comforting input you have.
10. Remind yourself, out loud, that this passes
"I am safe. This is temporary. I will be fine in an hour." Say it. Hearing your own voice cuts through the spiral. Time distortion is one of the worst parts of being too high — saying "this passes" reorients you to the fact that yes, actually, it does.
How to Help Someone Else Who's Freaking Out
If a friend is the one in trouble, your job is simpler than it feels.
- Stay calm yourself. They are watching you. If you look scared, their panic doubles.
- Reassure them in plain words. "You're safe. This is just too much THC. It will pass. I'm right here." Repeat as often as needed.
- Give them space, but don't leave. Sit nearby. Don't crowd. Don't lecture.
- Run the self-calm sequence for them. Bring water. Bring fruit or something sweet. Bring peppercorns. Offer CBD if you have it. Get them somewhere quiet. Lower the lights.
- Don't argue with what they're feeling. If they say "I think I'm dying," don't correct them harshly. Say "I know it feels that way. You are not. This passes." Validation lowers panic; correction raises it.
- Talk about something else. Once they've stabilised, gentle conversation about anything mundane — sports, what to eat tomorrow, a memory — helps the rest of the come-down.
When Should You Actually Call for Help?
The honest answer: very rarely. Cannabis on its own does not produce medical emergencies in healthy adults. But there are a few situations where you should escalate to a doctor or emergency services:
- Chest pain that doesn't ease with rest after 10–15 minutes. Especially if there's a known heart condition.
- Loss of consciousness, seizure, or inability to respond. This is extremely rare with cannabis alone, but if it happens, get medical help.
- Suspected mixing with other substances. If the person also drank heavily, took unknown pills, or used something they can't identify, that changes the picture.
- Severe vomiting that won't stop — could be cannabinoid hyperemesis syndrome (rare, in chronic heavy users) and warrants a doctor.
- If you're in doubt and it's not stopping after 1–2 hours of self-calm. A clinic visit costs little and rules out anything else. In Thailand, hospital ER is the right call if you genuinely can't tell what's wrong.
For most "I'm too high" situations, no medical help is needed. Time, calm, and water are the treatment.
How to Avoid This Next Time
Once you've come down, here's how to not end up here again.
- Start lower than you think you need. For edibles especially — 5 mg THC for first-timers, wait a full two hours before taking more. Most "I ate the whole gummy and now I'm in hell" stories are people not waiting long enough and double-dosing.
- Smoked dose is easier to control than edibles. One or two pulls, wait 10 minutes, see how it feels. Repeat if needed. You can always have more; you can't have less.
- Don't mix with alcohol. Alcohol amplifies THC absorption and the anxiety risk goes up sharply.
- Pay attention to the strain. Heavy Indica-dominant strains and very high-THC concentrates are the biggest triggers for greening out. Balanced or CBD-rich strains are much gentler. Read our guide on picking strains by terpene — better predictor than the Indica/Sativa label.
- Eat something before you smoke. Cannabis on an empty stomach hits harder and faster — and the blood sugar drop is part of why anxiety spikes.
- Talk to the budtender. If you walk into a dispensary and tell them "I'm sensitive to THC," they should be able to recommend strains under 18% THC with calming terpene profiles. If they can't, that's the wrong shop.
If You Bought From Stash
This is the part most other guides skip because they can't write it. If you bought cannabis from any of our shops and you're having a bad time, here's what we'd say.
Call the shop. Tell us what you took, when, and how you're feeling. We've talked dozens of people through this and we don't judge. We can help you figure out exactly what you've consumed, whether it's at peak or coming down, and what specifically helps. The contact numbers are on every location page. We are open 24 hours at Ari, On Nut, and Ekkamai, and 11 AM–2 AM at Chinatown.
And the next time you come in, ask for a strain consultation. Our budtenders will steer you toward something that won't put you back in this position. That's literally the job. Use it.
FAQ
How long does being too high last?
Smoked cannabis peaks at 30 minutes and the worst is usually over within 2 hours. Edibles peak around 1–2 hours and can take 4–8 hours to fully wear off. You'll feel "off" longer than you feel actively bad — the worst part is short.
Can you overdose on weed?
Not in the way you can overdose on alcohol or opioids. Cannabis does not cause respiratory depression and has no documented lethal dose at consumable levels. You can absolutely take more than you can comfortably handle, which is what greening out is — but it is not a medical overdose in the usual sense.
Does drinking alcohol help when too high?
No. Alcohol makes it worse. It amplifies cannabis absorption, raises heart rate, and stacks on the dizziness. Stick to water, juice, or non-alcoholic drinks.
Will the black peppercorn trick actually work?
For many people, yes — the beta-caryophyllene in pepper interacts with the same receptor system cannabis hits, and the calming effect is real for some users. It's not a guaranteed fix but it's free, fast, and worth trying. CBD is more reliable if you have it.
Should I throw up if I ate too much?
Generally no — THC is absorbed through the small intestine, so by the time you feel the effect, vomiting won't undo much. If you took an edible in the last 15–20 minutes and feel it coming on hard, you could try, but past that point it doesn't help. Time and the calm sequence work better.
Can being too high cause a heart attack?
In healthy adults, no. Cannabis raises heart rate temporarily — feels alarming, but does not cause cardiac events in people without pre-existing heart disease. If you have a known heart condition, talk to a doctor before using high-THC cannabis, and seek help if chest pain persists.
I'm in Bangkok and I'm panicking right now — what do I do?
Sit down. Drink water. Breathe slowly. Read this page again from the top. Chew peppercorns if you have them. If you bought from a Stash BKK shop, call us — we'll talk you through it. You're going to be fine, and you'll feel normal again within a couple of hours. This is the worst part. It passes.
