If you’re too high right now, the most important thing to know is that it will pass. No one has ever died from a cannabis overdose, and even the most intense high has a ceiling. Smoked cannabis typically peaks within 30 minutes and fades over a few hours. Edibles can take up to 4 hours to peak and last as long as 12 hours, with some residual effects lingering into the next day. Knowing your timeline is half the battle.
This article covers both situations: getting through an uncomfortable high right now and stepping away from cannabis use for good.
If You’re Too High Right Now
Nothing will instantly flush THC from your system. Cold showers, coffee, and most internet remedies lack solid human research behind them. What you can do is manage the experience so it feels less overwhelming while your body processes the THC naturally.
Start with your breathing. Sit somewhere comfortable with your back supported. Inhale slowly for 3 to 4 seconds, hold for a second, then exhale for 3 to 4 seconds. Place a hand on your stomach and feel it rise and fall. This directly counteracts the racing heart and chest tightness that make a high feel like a medical emergency. Repeat a simple phrase to yourself: “I’m safe. This is temporary. I’ll feel better soon.” It sounds too simple to work, but anchoring your thoughts to a short sentence interrupts the spiral of anxiety.
If breathing alone isn’t enough, try the 5-4-3-2-1 grounding technique: identify five sounds you can hear, four textures you can touch, three objects you can see, two scents you can smell, and one taste in your mouth. This pulls your attention out of your head and into the physical world around you. Picking up nearby objects, running your hands under cold water, or petting an animal all serve the same purpose.
Light movement helps too. A short walk, some slow stretches, or even pacing around a room can burn off anxious energy. If you pace, try naming things as you pass them: “couch, lamp, window, plant.” This turns restless movement into another grounding exercise.
Black Pepper: The One Home Remedy With Some Basis
Chewing on a few black peppercorns is one of the more credible folk remedies for cannabis anxiety. Black pepper contains a terpene called caryophyllene (also found in rosemary and lavender) that interacts with the same receptor system THC targets. Caryophyllene is associated with reducing anxiety symptoms, which is why sniffing or chewing black pepper can take the edge off paranoia during a high. It won’t end the high, but it may make it more manageable.
Why CBD Might Not Help
You’ll see advice everywhere to take CBD to counteract THC. The reality is more complicated. While some older studies suggested CBD could soften THC’s effects, newer research shows that high doses of oral CBD can actually inhibit your body’s ability to break down THC. This means the THC stays in your system at higher concentrations for longer, potentially making adverse effects worse. Taking a CBD gummy or tincture while you’re already too high could backfire. Your safest bet is time, not more cannabinoids.
When a “Green Out” Needs Medical Attention
Most uncomfortable highs resolve on their own. But a severe overconsumption event, sometimes called a “green out,” can occasionally require emergency care. Watch for extreme confusion, hallucinations or delusions, severe and uncontrollable vomiting, or a heart rate that feels dangerously fast and won’t slow down with breathing exercises. If you or someone you’re with experiences these symptoms and they feel severe rather than just uncomfortable, calling 911 or going to an emergency room is the right call. Medical staff won’t judge you, and they can provide supportive care to keep you safe.
How Long Different Highs Last
Setting realistic expectations makes an uncomfortable high far easier to ride out. Here’s what the timelines look like:
With smoked or vaped cannabis, effects begin within seconds to a few minutes. You’ll hit the peak around 30 minutes in, and the main effects typically fade within 6 hours. Some residual grogginess or mild cognitive fog can linger up to 24 hours.
Edibles are a different story. Effects don’t start for 30 minutes to 2 hours after eating, which is why people so often take a second dose too soon. The peak can take a full 4 hours to arrive, and the total experience can stretch to 12 hours. Residual effects, again, can last up to 24 hours. If you ate an edible and you’re reading this, you may not have peaked yet. That’s okay. The same grounding and breathing techniques will carry you through.
If You Want to Stop Using Cannabis Altogether
The other reason people search “how to stop getting high” is that they’re done with cannabis and want to quit. If you’ve been using regularly, this is a real transition, not just a matter of willpower. Cannabis withdrawal is a recognized clinical condition, and knowing what to expect makes it far less alarming.
Withdrawal symptoms can appear within a week of stopping heavy, prolonged use. The most common are anxiety (reported by about 76% of people experiencing withdrawal), irritability and hostility (72%), sleep difficulty (68%), and depressed mood (59%). Restlessness, decreased appetite, and physical symptoms like chills or stomach discomfort are also possible but less common. These symptoms are genuinely uncomfortable, and they’re the main reason people start using again.
Your Brain’s Recovery Timeline
Regular THC use causes your brain’s cannabinoid receptors to downregulate, essentially becoming less sensitive. This is why tolerance builds and why you feel off when you stop. The encouraging news is that recovery starts fast. Brain imaging studies show receptor availability begins increasing within just 2 days of abstinence. The most significant recovery happens in the first 2 to 4 weeks. After about 4 weeks, receptor density in most brain regions returns to levels comparable to people who have never used cannabis.
This is the science behind the “tolerance break,” but it also applies to quitting entirely. The first two weeks are the hardest. After that, your brain is physically rebuilding its baseline, and you’ll start to notice improvements in sleep, mood, and mental clarity.
What Helps During the First Few Weeks
There are no FDA-approved medications specifically for cannabis cessation. However, several medications have shown some promise in clinical trials for managing withdrawal symptoms or cravings. Some doctors prescribe gabapentin for cravings, certain antidepressants for mood symptoms, or short-term sleep aids for insomnia. A supplement called N-acetylcysteine has also been studied, particularly in younger users. These are all off-label uses, so they require a conversation with a provider who understands your situation.
Beyond medication, the practical strategies matter more than most people realize. Exercise is one of the most effective tools for managing the anxiety and irritability of early withdrawal. It doesn’t need to be intense; a 30-minute walk has measurable effects on mood. Sleep hygiene becomes critical since insomnia is one of the most persistent withdrawal symptoms. Keeping a consistent wake time, avoiding screens before bed, and keeping your room cool and dark can make the difference between a rough night and a manageable one.
Social support, whether that’s a therapist, a support group, or a trusted friend who knows what you’re going through, significantly improves outcomes. The irritability and low mood of the first two weeks can strain relationships if the people around you don’t understand what’s happening. Letting them know you’re going through a withdrawal period and that it’s temporary helps everyone involved.
Tolerance Breaks vs. Quitting
If you’re not ready to quit entirely but want to reset your relationship with cannabis, a structured tolerance break can be effective. Based on the receptor recovery research, a minimum of 2 weeks delivers noticeable results, and 4 weeks brings your receptors close to baseline. After a full reset, you’ll need significantly less cannabis to feel its effects, which naturally reduces consumption if you choose to return to occasional use. The withdrawal symptoms during a planned break are the same as quitting, just with an endpoint in mind, so the same coping strategies apply.