If you’re too high and need to come down, the most important thing to know is: this will pass, and you are physically safe. A cannabis high from smoking or vaping typically lasts 1 to 2 hours, with the most intense feelings fading well before that. Edibles take longer, potentially lasting up to 10 to 12 hours, but the peak discomfort usually hits between 2 and 4 hours and eases after that. Nothing you’re feeling right now is permanent.
There are several things you can do right now to take the edge off.
Breathe Slowly and Deliberately
When THC triggers anxiety, your body’s fight-or-flight system kicks into overdrive. That’s what’s behind the racing heart, shallow breathing, sweaty palms, and upset stomach. Slow, controlled breathing activates the opposite system in your body, the one responsible for calming you back down.
Try the 4-7-8 technique: breathe in through your nose for 4 seconds, hold for 7 seconds, then exhale slowly through your mouth for 8 seconds. Repeat this three or four times. This pattern has been shown to lower heart rate and blood pressure, shifting your body toward a more relaxed state. If 7 seconds of holding feels like too much, just focus on making your exhale longer than your inhale. That’s the part that matters most.
Chew Black Peppercorns
This one sounds strange, but it has real chemistry behind it. Black pepper contains a terpene called caryophyllene that is associated with reducing anxiety symptoms. Chew on two or three whole black peppercorns, or even just sniff freshly ground pepper. Many people report feeling noticeably calmer within minutes. Neil Young famously recommended this trick, and pharmacologists have since backed up the logic. You don’t need to eat a handful. A few peppercorns or a strong sniff is enough.
Smell or Eat Something Citrusy
Lemons, oranges, and other citrus fruits contain a terpene called limonene that directly counters THC-induced anxiety. In a controlled study, participants who received limonene alongside THC reported significantly lower ratings of feeling “anxious/nervous” and “paranoid” compared to those who received THC alone. The effect was dose-dependent, meaning more limonene produced more relief.
Importantly, limonene didn’t change the THC levels in participants’ blood. It didn’t make them less high overall. It specifically reduced the anxious, paranoid edge. Peel a lemon and inhale the rind, squeeze lemon into water, or eat an orange. The limonene is concentrated in the peel, so zesting or just holding the rind near your nose can help quickly.
Reduce Your Sensory Input
THC amplifies sensory processing, which is why music sounds amazing when you’re enjoying your high but why a loud TV or bright room can feel overwhelming when you’re not. If you’re feeling overstimulated, dim the lights, lower the volume on whatever’s playing, or move to a quieter room. Put your phone down if scrolling is making things worse.
A calm, low-stimulation environment lets your nervous system stop working so hard. Sitting or lying somewhere comfortable, with a blanket if you’re cold, can make a surprising difference. If you’re at a party or crowded place, step outside or find a quieter corner.
Try Eating Pine Nuts or Pistachios
Pine nuts and pistachios contain a terpene called alpha-pinene, which may help with the foggy, confused feeling that sometimes accompanies being too high. Alpha-pinene works by slowing the breakdown of a brain chemical involved in memory and focus, helping your mind feel a bit sharper and more grounded. This won’t dramatically sober you up, but snacking on something familiar can also be comforting on its own, and it gives your body something to do besides panic.
Ground Yourself With Cold Water
Splash cold water on your face, hold an ice cube, or press a cold, wet towel against the back of your neck. Cold activates the same calming nerve pathway that slow breathing does, pulling your body out of fight-or-flight mode. The sudden sensation also gives your brain something concrete to focus on instead of spiraling thoughts.
Some people find that a cool shower helps, but if you’re feeling dizzy or unsteady, stick with cold water on your face and wrists. You don’t want to deal with slipping in a shower on top of everything else.
Remind Yourself of the Timeline
Knowing when you’ll feel normal again can take the fear out of the experience. If you smoked or vaped, the effects kicked in within seconds and will largely be gone in 1 to 2 hours. If you took an edible, it may have taken 30 to 90 minutes to hit, and the peak discomfort lands around 2 to 4 hours. Total duration can stretch to 10 to 12 hours for edibles, but the intense part is a fraction of that. After the peak, the high tapers gradually.
The anxiety you’re feeling is caused by THC activating receptors in the part of your brain that processes fear. It’s a chemical reaction, not a sign that something is wrong with you. Your body is already metabolizing the THC and will continue doing so whether you’re calm or panicking. The only difference is how comfortable you are in the meantime.
What Not to Do
Don’t consume more cannabis, including CBD flower that might contain THC. Don’t drink alcohol, which tends to intensify THC’s effects and can cause nausea. Don’t try to “fight” the high by pacing around anxiously or fixating on your heart rate. And don’t Google your symptoms endlessly. You already found this article. You have what you need.
If you’re with someone you trust, tell them you’re not feeling great. Sometimes just saying it out loud and having someone sit with you is the most effective remedy of all.
When the High Becomes a Medical Concern
The vast majority of uncomfortable highs are just that: uncomfortable. But if you’re vomiting repeatedly and can’t keep water down, that’s a different situation. Intractable vomiting, especially if it happens regularly after cannabis use, can lead to dehydration and may need medical attention. Signs that warrant a trip to the emergency room include uncontrolled vomiting that won’t stop, severe abdominal pain with a rigid or tender stomach, high fever, or bloody vomit. These symptoms point to something beyond a bad high and shouldn’t be waited out at home.