If you’re too high right now, the most important thing to know is that the feeling is temporary and not dangerous. No one has ever fatally overdosed on cannabis alone. What you’re experiencing will pass, and there are several things you can do right now to take the edge off faster.
How Long You Need to Wait
How quickly you’ll feel normal depends entirely on how you consumed cannabis. If you smoked or vaped, effects typically peak within 30 minutes and can last up to 6 hours total. If you ate an edible, you may not hit peak intensity for up to 4 hours, and the full experience can stretch to 12 hours. Some residual grogginess can linger up to 24 hours with either method.
Knowing this timeline matters because it sets realistic expectations. If you smoked 45 minutes ago and feel overwhelmed, you’re likely at or near the worst of it, and things will gradually improve from here. If you ate an edible an hour ago and it’s still getting more intense, that’s normal. It doesn’t mean something is wrong.
Calm Your Nervous System With Cold Water
One of the fastest ways to physically shift out of a panicky state is to trigger what’s called the dive reflex. Fill a bowl or sink with cold water and submerge your face for 15 to 30 seconds, or hold a bag of ice or a cold wet towel over your forehead, eyes, and cheeks. This sends a signal to your brain that automatically slows your heart rate and redirects blood flow to your core organs. Your body shifts out of its stress response and into a calmer state.
This works because THC can spike your heart rate and activate the same fight-or-flight system that drives anxiety and paranoia. The cold water essentially overrides that signal. It’s simple, it’s immediate, and it costs nothing. If you have a heart condition or blood pressure issues, skip this one and try the breathing techniques below instead.
Breathe Slowly and Deliberately
Slow, controlled breathing is the most accessible tool you have. Breathe in through your nose for 4 counts, hold for 4 counts, and exhale through your mouth for 6 to 8 counts. The extended exhale is what matters most: it activates the calming branch of your nervous system and counteracts the racing heartbeat that often accompanies being too high.
Do this for 3 to 5 minutes. Pair it with closing your eyes and focusing only on counting. This also gives your mind a simple task, which helps interrupt spiraling thoughts or paranoia.
Try Smelling or Chewing Black Pepper
This is one of the most commonly recommended home remedies, and there’s a biochemical reason it works. Black peppercorns contain a compound called beta-caryophyllene that interacts with the same receptor system in your body that THC does, helping to modulate its effects. Chew two or three whole black peppercorns, or simply crack some into your hand and inhale the scent deeply. Many people report a noticeable reduction in anxiety within minutes.
Sniff Some Lemon
Lemons and other citrus fruits are rich in a terpene called limonene, and a 2024 study from Johns Hopkins found that it specifically reduces THC-induced anxiety and paranoia in a dose-dependent way. In the study, participants who inhaled limonene alongside a high dose of THC reported significantly lower ratings of feeling anxious, nervous, and paranoid compared to those who received THC alone. The higher the dose of limonene, the greater the calming effect.
You don’t need a lab setup to benefit. Zest a lemon and inhale the oils deeply, chew on a piece of lemon peel, or even just cut a lemon in half and hold it near your nose. The key aromatic compounds are concentrated in the rind, not the juice.
Eat Something and Hydrate
Having food in your stomach can help blunt the intensity of a high, especially with edibles that are still being absorbed. Reach for something with fat and carbohydrates: toast with peanut butter, crackers and cheese, or a handful of nuts. Fat can bind to cannabinoids in your digestive tract, and eating generally helps redirect your body’s energy toward digestion.
Drink water or juice, not alcohol. Alcohol intensifies THC’s effects and can make nausea and dizziness significantly worse. A sugary drink like orange juice can help if you’re feeling shaky or lightheaded, and the citrus gives you a small dose of limonene as a bonus.
Distract Your Brain
Anxiety feeds on itself when you’re high. The more you focus on how high you feel, the worse it gets. Give your brain something else to do. Watch a familiar, comforting show. Listen to music you love. Play a simple game on your phone. Talk to a friend, either in person or by text. The goal is to occupy your attention with something low-stakes and pleasant.
Taking a shower can also help. The sensory input of water on your skin gives your brain new information to process, and alternating between warm and cool water can be grounding. Some people find that chewing gum or sucking on a hard candy helps by engaging their senses in a small, repetitive way.
What Not to Do
Exercising might seem like a logical way to “burn off” a high, but research shows it actually does the opposite. THC stores in your fat cells, and moderate exercise causes a significant spike in blood THC levels immediately afterward as fat is metabolized. The effect is more pronounced in people with higher body mass. While blood levels return to baseline about two hours after exercise, the last thing you want when you’re already too high is a temporary THC surge.
Caffeine is another common instinct that usually backfires. Coffee increases heart rate and can amplify the jittery, anxious feelings that make a bad high uncomfortable. Stick with water, herbal tea, or juice.
Don’t consume more cannabis. This sounds obvious, but if you’re using a product with both THC and CBD, don’t assume taking more of it will help just because CBD can moderate THC’s effects. The additional THC will outweigh any benefit from the CBD.
An Over-the-Counter Option for Cognitive Fog
If your main complaint is mental fog rather than anxiety, there’s an interesting finding from preclinical research: common anti-inflammatory pain relievers that block an enzyme called COX-2 (like ibuprofen) appear to prevent THC-related memory and cognitive impairment in animal studies. Research published in Cell found that inhibiting this enzyme eliminated the synaptic and cognitive deficits caused by THC exposure. This hasn’t been confirmed in human trials yet, so treat it as preliminary, but a standard dose of ibuprofen is unlikely to cause harm and may help you feel sharper.
Signs That Need Medical Attention
The vast majority of “too high” experiences are unpleasant but harmless. However, go to an emergency room or call 911 if you or someone you’re with experiences chest pain, an extremely fast or irregular heartbeat, difficulty breathing, an inability to wake up, or severe confusion that goes beyond typical disorientation. Hallucinations (seeing or hearing things that aren’t there) or temporary psychotic symptoms, while rare, also warrant medical evaluation.
For everything short of those warning signs, time is your most reliable remedy. Get comfortable, use the techniques above, and remind yourself that no matter how intense this feels, it will end.