You can’t completely eliminate dreaming, but you can significantly reduce how much you dream or how often you remember your dreams. Dreams occur primarily during REM sleep, a phase your brain cycles through several times each night. Since REM sleep serves important functions for emotional processing and memory, the goal for most people isn’t to erase it entirely but to reduce vivid or distressing dreams that disrupt rest. Several approaches work, ranging from simple habit changes to therapies designed specifically for people with recurring nightmares.
Why You Dream in the First Place
Dreams happen during REM sleep, which is generated by a network of brain regions in the brainstem, hypothalamus, and forebrain. A cluster of neurons at the base of the brain acts as the switch that flips you into REM. Once activated, these neurons trigger the rapid eye movements, heightened brain activity, and temporary muscle paralysis that define this sleep stage. Acetylcholine, a chemical messenger, strengthens these transitions and helps sustain REM once it starts.
Your brain enters REM in cycles throughout the night, with each cycle lasting longer than the last. Most of your dreaming happens in the second half of the night, which is why you’re more likely to remember a dream if you wake up during the early morning hours. Anything that shortens, fragments, or delays REM sleep will reduce dream recall, though it comes with trade-offs.
Reduce Dream Recall With Sleep Habits
The simplest way to “stop” dreaming is to stop remembering your dreams. Dream recall depends heavily on whether you wake up during or just after a REM period. If you sleep through the night without interruption, you’re far less likely to remember anything you dreamed.
A few practical changes help with this:
- Wake to a consistent alarm. Setting an alarm that goes off at the same time each day trains your sleep cycles into a predictable rhythm. If your alarm pulls you out of deep sleep rather than REM, you’ll recall fewer dreams.
- Avoid alcohol before bed. Alcohol suppresses REM sleep during the first half of the night, but once your body metabolizes it (typically within four to five hours), REM rebounds hard. This rebound effect produces unusually intense, vivid dreams in the early morning hours. Cutting alcohol in the evening smooths out your REM cycles and reduces those jarring late-night dreams.
- Keep your room comfortable. Extreme temperatures fragment sleep and increase the number of times you briefly wake, which boosts dream recall. Studies testing temperatures from about 55°F to 77°F found that while total REM duration stayed similar, the pattern of REM cycles shifted with temperature. A cool, stable room (around 65 to 68°F) promotes uninterrupted sleep.
- Stop journaling your dreams. If you currently keep a dream journal, you’re actively training your brain to retain dream content. Dropping this habit lets dream memories fade before they reach conscious awareness.
How Medications Affect REM Sleep
Several common medications suppress REM sleep as a side effect, which reduces dreaming. This isn’t typically a reason to start taking them, but if you’re already on one of these medications and notice fewer dreams, that’s why.
Most antidepressants in the SSRI and SNRI classes delay the onset of REM sleep and shorten its total duration. They do this by increasing serotonin and norepinephrine activity, which naturally inhibits the brain circuits that generate REM. Older classes of antidepressants and MAO inhibitors have similar effects. The REM suppression is consistent enough that it shows up across nearly every study on these drug classes.
Cannabis, specifically THC, has a reputation for suppressing dreams, but the research is surprisingly mixed. A systematic review of six studies found that REM sleep was unchanged in four of them, increased in one, and decreased in one. Some users report a near-total absence of dream recall while using THC regularly, but this may reflect disrupted sleep architecture rather than true REM suppression. When regular cannabis users stop, many experience a dramatic surge in vivid dreams as REM rebounds, sometimes lasting weeks.
The key point: any substance that artificially suppresses REM will eventually produce a rebound. When you stop using it, dreams often come back more vivid and frequent than before.
Treatments for Recurring Nightmares
If your desire to stop dreaming is really about stopping nightmares, there are targeted treatments with strong evidence behind them. The American Academy of Sleep Medicine recommends Image Rehearsal Therapy (IRT) as the primary treatment for nightmare disorder, including nightmares tied to PTSD.
IRT works by rewriting the nightmare while you’re awake. You recall the disturbing dream, then deliberately change its storyline to something neutral or positive. You then mentally rehearse this new version for 10 to 20 minutes a day, ideally before bed. The critical rule is that you rehearse only the rewritten script and avoid replaying the original nightmare. Over time, this trains your brain to default to the new narrative, and nightmare frequency drops significantly.
For PTSD-related nightmares specifically, a blood pressure medication called prazosin is sometimes prescribed off-label. It works by blocking stress-related signaling in brain areas responsible for fear responses and sleep disruption. Treatment usually starts at a low dose at bedtime, gradually increasing until nightmares decrease. Effective doses in studies ranged widely depending on the population, from around 2 mg in older adults to over 13 mg in combat veterans.
Other approaches the AASM lists as potentially useful include cognitive behavioral therapy, progressive muscle relaxation, lucid dreaming therapy, and systematic desensitization. Notably, the AASM specifically does not recommend clonazepam or venlafaxine for nightmares, despite their occasional use.
Lucid Dreaming as an Exit Strategy
Rather than preventing dreams altogether, some people learn to recognize when they’re dreaming and then choose to end the dream. This is lucid dreaming, and while it takes practice, it gives you a measure of control over the experience.
The most commonly reported techniques for waking yourself from a lucid dream include falling asleep within the dream (which triggers waking in real life), calling out loudly, or attempting to speak out loud. The physical effort of trying to vocalize often engages enough of your waking brain to pull you out of sleep. Reality testing during the day, such as regularly asking yourself whether you’re dreaming and checking for impossible details, builds the habit of questioning your state, which eventually carries over into dreams.
Why Completely Stopping Dreams Is Risky
REM sleep isn’t just the stage where dreams happen. It plays a role in processing emotions, consolidating certain types of memory, and regulating pain sensitivity. Animal studies on REM deprivation show increases in aggressive behavior, heightened pain sensitivity, and impaired fear memory processing. The limited human research points in the same direction: people deprived of REM show increased pain sensitivity and may consolidate negative emotional memories more strongly, not less.
Long-term REM suppression from medications like SSRIs is common, and most people tolerate it without obvious problems. But researchers have noted a clear gap in understanding what chronic REM suppression does over years or decades. The safest approach is to target the specific problem, whether that’s nightmare frequency, dream vividness, or sleep disruption, rather than trying to eliminate an entire sleep stage.