You can’t instantly eliminate THC from your system, but you can make the experience significantly more manageable while you wait it out. The most effective strategies target the specific symptoms that make being too high uncomfortable: racing heart, anxiety, dizziness, and nausea. Most of these can be eased within 15 to 30 minutes using simple techniques you can do at home.
How Long You Need to Wait
The single most important factor is how the THC entered your body. If you smoked or vaped, effects typically peak within 30 minutes and can last up to 6 hours, though the most intense period usually passes well before that. If you ate an edible, the timeline is much longer. Effects can take 30 minutes to 2 hours just to begin, peak around 4 hours in, and last up to 12 hours. Some residual grogginess can linger up to 24 hours with either method.
This matters because if you ate an edible and feel too high after just one hour, you may not have hit the peak yet. Knowing that can be unsettling, but it also means the strategies below are especially important for edible users since you’re in for a longer ride.
Eat Something, Especially Sugary or Starchy Food
THC can cause a drop in blood sugar, which worsens dizziness, nausea, and that lightheaded feeling sometimes called “greening out.” Eating a snack helps stabilize blood sugar and gives your body something to focus on besides the high. Crackers, bread, fruit, juice, or candy all work. You don’t need a full meal. If you feel nauseous, start with something bland and take small bites.
Drinking water alongside your snack also helps. Dehydration intensifies many of the same symptoms that low blood sugar does, and THC commonly causes dry mouth, which means you’re likely already mildly dehydrated. Sip steadily rather than chugging.
Lower Your Heart Rate
A racing heart is one of the most alarming parts of being too high, and it feeds directly into anxiety. Slow, controlled breathing is the fastest way to bring it down. Breathe in through your nose for 4 seconds, hold for 4 seconds, then exhale slowly through your mouth for 6 to 8 seconds. The long exhale is the key part. It activates your body’s “rest and digest” response through the vagus nerve, which directly counteracts the fight-or-flight sensation THC can trigger.
Splashing cold water on your face works through a similar mechanism. Cold water on the forehead and cheeks triggers a reflex that slows heart rate. It also provides a strong sensory jolt that can interrupt a spiral of anxious thoughts.
Manage the Anxiety
THC-induced anxiety feels indistinguishable from a panic attack, but it is temporary and not dangerous. Reminding yourself of that fact, even out loud, is genuinely helpful. The phrase “I’m not in danger, I’m just high, and this will pass” sounds simple, but it works as a grounding anchor when your thoughts are racing.
Reduce sensory input. Turn off bright lights, lower the volume on whatever you’re watching, and move to a quieter space if possible. Loud sounds and visual stimulation can amplify paranoia and discomfort. A calm, dimly lit room with a familiar show or quiet music is ideal. Lying down on your side can also help if you feel dizzy or nauseous, since it takes the pressure off your body to maintain balance and posture.
Physical grounding techniques pull your attention out of your head and into your body. Hold an ice cube, chew on a peppercorn (this is a well-known folk remedy among cannabis users, and the terpenes in black pepper may interact with cannabinoid receptors), or press your feet firmly into the floor and notice the sensation. Anything that forces your brain to process a strong, immediate physical input can break the cycle of spiraling thoughts.
What About Ibuprofen or CBD?
You may have seen claims that ibuprofen can reduce the cognitive effects of THC. This idea comes from animal research on a class of anti-inflammatory compounds, but human studies using similar drugs have not shown meaningful effects on cannabis intoxication. One controlled study found that a prescription-strength anti-inflammatory did not reduce the subjective effects of THC and actually increased cannabis craving. So popping an ibuprofen is unlikely to help you come down faster.
CBD is a more promising option, though results vary. CBD can dampen some of THC’s effects on anxiety by competing for the same receptor pathways. If you have a CBD tincture or gummy available, it may take the edge off. It won’t eliminate the high, but some people find it makes the experience less sharp and panicky. The catch is that CBD takes time to work, especially in edible form, so it’s more useful early on than at peak intensity.
Take a Shower
A warm shower combines several helpful elements at once. The water provides constant sensory stimulation that grounds you in the present moment. The warmth relaxes tense muscles. Standing upright and going through a routine (adjusting the temperature, reaching for soap) gives your brain simple tasks to focus on. Many people report that a shower is the single most effective thing they’ve tried during an uncomfortable high. If you feel too dizzy to stand safely, a bath works too.
Sleep It Off
If you can fall asleep, sleep is the most reliable way to skip past the worst of it. THC is sedating for many people, so this may be easier than you expect, especially if you’ve eaten a snack, dimmed the lights, and slowed your breathing. Put on something familiar and low-stimulation in the background, like a TV show you’ve seen many times, and let yourself drift. Even a 30 to 60 minute nap can make a dramatic difference in how you feel when you wake up, since you’ll be well past the peak.
If anxiety is keeping you from sleeping, focus on the breathing technique described above. You don’t need to force sleep. Just lying still with your eyes closed in a comfortable position will help your body process the THC faster than pacing around or scrolling your phone.
What Not to Do
- Don’t consume more cannabis. This sounds obvious, but if you’re sharing with others, social pressure can lead to another hit before you realize how high you already are.
- Don’t drink alcohol. Alcohol increases THC absorption and intensifies the high. It also worsens nausea and dizziness. This combination is one of the most common causes of greening out.
- Don’t drink coffee. Caffeine raises your heart rate and can increase anxiety, which are exactly the symptoms you’re trying to reduce.
- Don’t fight it. Resisting the high or obsessively monitoring how you feel tends to make anxiety worse. Accept that you’re high, remind yourself it’s temporary, and focus on comfort rather than sobriety.