A cannabis high will always fade on its own, but when you’re in the middle of one that feels too intense, that’s not especially comforting. The good news is that there are practical things you can do right now to take the edge off and shorten the experience. How long you’ll need to wait depends on how you consumed it: inhaled cannabis peaks within about 30 minutes and can last up to 6 hours, while edibles can take up to 4 hours to fully peak and linger for up to 12 hours.
Ground Yourself First
If you’re feeling panicky, paranoid, or like things are spiraling, the fastest way to regain a sense of control is through grounding techniques. These work by pulling your attention out of anxious thought loops and anchoring it to something concrete and real.
The most widely recommended approach is the 5-4-3-2-1 method: name 5 things you can see, 4 things you can touch, 3 things you can hear, 2 things you can smell, and 1 thing you can taste. This forces your brain to process real sensory input instead of cycling through worst-case thoughts. If that feels like too much, try something simpler. Clench your fists as tightly as you can for 10 seconds, then release. The physical tension gives the anxiety somewhere to land, and the release afterward can make the whole body feel lighter.
Slow, deliberate breathing also helps. Focus on feeling the air move in and out of your nostrils, or place a hand on your belly and notice it rise and fall. You’re not trying to breathe in any special pattern. Just paying attention to the sensation is enough to interrupt the panic cycle. If your mind keeps racing, try counting to 10 or reciting the alphabet. It sounds absurdly simple, but occupying your brain with familiar, predictable facts crowds out the anxious noise. If you reach the end and still feel tense, go backward.
Change Your Environment
Your surroundings have a huge effect on how a high feels. If you’re somewhere loud, crowded, or unfamiliar, move to a quieter space. A couch, a bed, a dim room with a blanket. Put on a show or playlist you’ve watched or heard a hundred times. Novelty feeds anxiety when you’re overstimulated, so lean into the familiar and boring.
Fresh air genuinely helps. Step outside or open a window. A short, slow walk can shift your headspace, but don’t push yourself into vigorous exercise. Research on cannabis and physical activity shows that moderate exercise doesn’t meaningfully change THC levels in your blood, so you won’t “burn it off.” The benefit of moving is purely psychological: it changes the scenery and gives your body something to do besides sit with the discomfort.
Eat Something and Drink Water
Eating a meal or snack won’t speed up how fast your body processes THC. Studies on food deprivation and exercise found no significant changes in blood or urine cannabinoid levels, meaning you can’t fast or feast your way through a high any faster. But eating and hydrating still help for a different reason: they address the physical discomfort that makes a strong high feel worse. Dry mouth, low blood sugar, lightheadedness, and nausea all amplify the unpleasant parts of being too high.
Water, juice, or a light snack can ease those symptoms and give you something normal to focus on. Avoid alcohol, which intensifies THC’s effects and can make dizziness and nausea significantly worse.
Try Black Pepper or Lemon
This one sounds like folk wisdom, but there’s real science behind it. Sniffing or chewing on black peppercorns is a commonly reported remedy, and a compound found in lemons called limonene (also naturally present in cannabis) has been studied specifically for its effect on THC-induced anxiety.
A Johns Hopkins study tested vaporized limonene alongside THC in 20 healthy adults. Participants who received THC plus limonene 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 a greater reduction in anxiety. Importantly, limonene didn’t dampen the other effects of THC or cause any side effects on its own.
You don’t need a vaporizer to try this. Smelling fresh lemon peel, squeezing lemon zest near your nose, or drinking lemon water can deliver small amounts of limonene. It’s not a guaranteed fix, but it’s safe and easy enough to be worth trying.
Skip the CBD
A lot of people reach for CBD products thinking they’ll counteract the THC. This is one of the most persistent pieces of advice online, and it may actually backfire. A Johns Hopkins study gave participants brownies containing 20 mg of THC alone or 20 mg of THC combined with 640 mg of CBD. The results were the opposite of what most people expect: blood levels of THC were nearly twice as high when CBD was added. Participants experienced stronger subjective drug effects, greater cognitive impairment, and a larger increase in heart rate from the combination.
This appears to be a metabolic interaction. When taken orally, CBD can interfere with how your liver breaks down THC, effectively making the same dose of THC hit harder and last longer. So if you’re already too high, adding CBD (especially in edible form) could make things worse rather than better.
Know Your Timeline
Setting realistic expectations is one of the most helpful things you can do. If you smoked or vaped, you likely felt the effects within seconds to minutes. The peak hits around the 30-minute mark, and you should feel noticeably better within an hour or two. Total effects can last up to 6 hours, but the most intense part is usually much shorter.
Edibles are a different story. Effects can take anywhere from 30 minutes to 2 hours to even begin, and they peak around the 4-hour mark. If you ate an edible and feel like the high keeps getting stronger, that’s normal and expected. The full experience can last up to 12 hours. This is why edible overconsumption is so common: people don’t feel anything after an hour, eat more, and then both doses hit at once.
Remind yourself that no matter how uncomfortable this feels, it is temporary. Nobody has ever died from a cannabis overdose alone. Your heart rate may be elevated and your thoughts may feel chaotic, but your body will process the THC and return to baseline.
Signs That Need Medical Attention
Most bad highs are deeply unpleasant but not dangerous. However, certain symptoms go beyond normal overconsumption. If someone is unresponsive and cannot be woken up, is having trouble breathing, or is experiencing severe chest pain, call 911. Acute psychosis, where a person completely loses touch with reality, can also occur, particularly in first-time users or people with a history of psychiatric conditions. Intense paranoia or panic that doesn’t respond to any calming measures and continues escalating may also warrant a call for help.