Nighttime hot flashes, often called night sweats, can be managed through a combination of bedroom changes, trigger avoidance, and in some cases, targeted treatments. Most people find relief by layering several smaller strategies rather than relying on a single fix. Here’s what actually works and what the evidence says about each approach.
Why Hot Flashes Get Worse at Night
Your brain has an internal thermostat that keeps your body temperature within a comfortable range. During menopause, dropping estrogen levels increase certain brain chemicals that narrow this comfort zone dramatically. Instead of tolerating normal temperature fluctuations, your brain interprets even a tiny rise in core body temperature as overheating and launches a full cooling response: blood vessels dilate, your skin flushes, and you start sweating. At night, your body temperature naturally shifts during sleep cycles, which is why these episodes tend to cluster between bedtime and early morning.
Set Up Your Bedroom for Cooler Sleep
The most immediate thing you can do is make your sleep environment cooler. Keep your bedroom between 60 and 67°F (15–19°C), which is the range sleep specialists generally recommend. If you don’t have central air conditioning, a fan pointed toward your bed or a window cracked open for airflow can help. Bed cooling systems, which circulate water or air through a pad beneath your sheets, are another option worth considering if night sweats are frequent and disruptive.
Your bedding matters more than you might think. Sheets and pajamas made from breathable, moisture-wicking materials pull sweat away from your skin so you’re not lying in dampness. Bamboo and Tencel (a fabric made from wood fiber) are naturally moisture-wicking and stay cool to the touch. High-quality long-staple cotton and linen are also good choices. Synthetic moisture-wicking fabrics designed for athletics can work well too, though some people find them less comfortable against the skin. Avoid heavy flannel or standard polyester, which trap heat.
Layering thin blankets instead of using one thick comforter lets you kick off a layer mid-flash without waking up fully. Keeping a cold water bottle or damp washcloth on your nightstand gives you something to grab immediately when an episode hits.
Know Your Triggers
Certain foods and drinks can set off or intensify night sweats, especially when consumed in the evening. A Mayo Clinic study of more than 1,800 women found an association between caffeine intake and more bothersome hot flashes and night sweats in postmenopausal women. Alcohol is another common trigger. It dilates blood vessels and raises skin temperature, which is exactly the cascade your narrowed thermostat is already primed to overreact to. Spicy foods and hot beverages close to bedtime can have a similar effect.
You don’t necessarily need to eliminate all of these permanently. Try cutting them out in the hours before bed for two to three weeks and see if your nighttime episodes improve. Many people find they can still enjoy coffee in the morning but need to stop by early afternoon.
Weight, Exercise, and Daily Habits
Body weight plays a measurable role in hot flash severity. A large Women’s Health Initiative study of over 17,000 women found that those who lost 10 or more pounds, or at least 10% of their starting body weight, through a diet low in fat and high in whole grains, fruits, and vegetables were more likely to reduce or eliminate hot flashes and night sweats after one year compared to women who maintained their weight. The effect was seen in women not taking hormone therapy, suggesting the weight loss itself made the difference.
Regular exercise helps with temperature regulation and sleep quality overall, though timing matters. Vigorous workouts within two to three hours of bedtime can raise your core temperature and make night sweats worse. Morning or afternoon exercise is a safer bet.
Cognitive Behavioral Therapy for Sleep
Cognitive behavioral therapy for insomnia, sometimes called CBT-I, is a structured approach that retrains how you think about and respond to sleep disruptions. For menopausal women, research from The Menopause Society shows it produces meaningful short-term improvements in insomnia severity, hot flash interference, sleep confidence, and even depressive symptoms. The idea isn’t to stop the hot flash itself but to reduce how much it derails your sleep. Techniques include relaxation training, stimulus control (only using the bed for sleep), and changing thought patterns around nighttime waking. Programs typically run four to eight sessions and are available both in person and through online platforms.
One important note: benefits in studies tended to diminish after about three months, suggesting that ongoing practice of the techniques matters for lasting results.
Supplements and Natural Remedies
Black cohosh is the most studied herbal supplement for hot flashes. Some research suggests it can reduce the frequency of vasomotor symptoms like flushing and sweating, though results across studies have been mixed. It’s generally safe, but side effects can include headaches, dizziness, and nausea. Rarely, it has been linked to liver problems, so anyone with existing liver issues should check with a provider first.
Soy-based supplements contain plant compounds that weakly mimic estrogen. They cause few side effects for most people, though large amounts can lead to bloating or constipation. Women with a history of estrogen-sensitive cancers (breast, ovarian, or uterine) should be cautious with soy supplements. Soy can also interfere with thyroid medication absorption, so spacing them apart is important if that applies to you.
It’s worth noting that in 2023, The Menopause Society stated that supplements should not be recommended as treatments for hot flashes because of poor study quality and limited safety data. Other options like dong quai, evening primrose oil, and DHEA lack strong enough evidence to support their use. If you’re going to try a supplement, black cohosh has the most data behind it, but set realistic expectations.
Medical Treatments That Target the Mechanism
When lifestyle changes aren’t enough, there are prescription options. Hormone therapy remains the most effective treatment for severe hot flashes and works by replacing the estrogen that triggers the thermostat disruption. It’s not appropriate for everyone, particularly women with certain cancer risks or cardiovascular conditions, but for many it provides significant relief.
A newer, non-hormonal option called fezolinetant (sold as Veozah) was FDA-approved specifically for moderate to severe hot flashes. It works differently from hormones. Instead of replacing estrogen, it blocks a specific receptor in the brain’s temperature control center, directly preventing the signal that launches a hot flash. The dose is one 45 mg tablet taken once daily. This is particularly relevant for women who can’t or prefer not to take hormones.
Other non-hormonal prescriptions that doctors sometimes use include certain antidepressants and a blood pressure medication, both of which can reduce hot flash frequency through their effects on the same brain chemicals involved in temperature regulation. These are prescribed at lower doses than what’s used for their primary conditions.
Building a Layered Strategy
The most effective approach for most people combines several of these strategies at once. Start with the environmental and behavioral changes: cool your bedroom, switch to breathable bedding, cut evening caffeine and alcohol, and work on sleep hygiene by keeping a consistent sleep and wake schedule and avoiding screens for an hour before bed. If you’re carrying extra weight, even a moderate loss can meaningfully reduce symptoms over time. Add in a supplement like black cohosh if you want to try a low-risk option, and consider CBT-I if disrupted sleep is the biggest problem. If symptoms remain severe after these steps, a conversation about prescription options, whether hormonal or the newer non-hormonal treatments, is a reasonable next move.