Sleep during pregnancy can feel like a distant memory. Between the growing belly, restless legs, and frequent trips to the bathroom, a full night of rest is often elusive. While many expecting parents focus on pillows and positions, what you sip in the hours before bed could be sabotaging your rest.
We spoke with prenatal health experts and sleep specialists to identify the three drinks that most commonly interfere with sleep quality during pregnancy. Cutting these out—or at least timing them wisely—can make a noticeable difference in how well you sleep.
1. Caffeinated drinks: coffee, black tea, and green tea
This one likely isn't a surprise, but the details matter. Caffeine is a stimulant that blocks adenosine, the neurotransmitter that signals your body it's time to wind down. During pregnancy, caffeine metabolism slows significantly. A 2021 study in the Journal of Clinical Sleep Medicine found that pregnant people take nearly twice as long to clear caffeine from their bloodstream compared to when they are not pregnant.
That means your afternoon latte might still be circulating at bedtime. Coffee, black tea, green tea, and even some matcha powders contain enough caffeine to disrupt sleep onset and reduce deep sleep stages. The American College of Obstetricians and Gynecologists (ACOG) recommends limiting caffeine to under 200 mg per day during pregnancy—roughly one 12-ounce cup of coffee. But even within that limit, timing is everything.
What to do instead: If you enjoy tea or coffee, keep it to the morning hours. Switch to naturally caffeine-free options like rooibos or chamomile by early afternoon. Be mindful of hidden caffeine in colas, energy drinks, and even some bottled iced teas.
Expert tip: "Caffeine's half-life doubles during pregnancy," says Dr. Sarah Mitchell, a maternal-fetal medicine specialist. "A cup of coffee at 4 pm can still have measurable effects on your nervous system at bedtime."
2. Sugary sodas and fruit punches
High-sugar beverages cause blood glucose spikes and crashes that can wake you up in the middle of the night. When your blood sugar drops sharply—typically a few hours after drinking a sugary soda or sweetened juice—your body releases stress hormones like cortisol and adrenaline to compensate. This can jolt you out of deep sleep, leaving you groggy and irritable the next morning.
Beyond blood sugar instability, many sodas contain carbonation that can worsen pregnancy-related heartburn and reflux, making it hard to lie flat comfortably. Acid reflux is already more common during pregnancy due to hormonal relaxation of the lower esophageal sphincter. Adding carbonated, sugary beverages to the mix often makes it worse.
What to do instead: If you're craving something sweet in the evening, try a small cup of tart cherry juice—which naturally contains melatonin—or plain water infused with a slice of orange or a few frozen berries. Avoid any drink with added sugar or high-fructose corn syrup listed in the first three ingredients.
3. Alcohol in any form
Alcohol is perhaps the most deceptive sleep disruptor. It may help you fall asleep faster because of its initial sedative effect, but it fragments your sleep architecture—especially during the second half of the night. Alcohol reduces rapid eye movement (REM) sleep and increases nighttime awakenings, even if you don't remember them the next morning.
During pregnancy, alcohol crosses the placenta and can affect fetal development. No amount of alcohol has been proven safe during pregnancy, according to the Centers for Disease Control and Prevention (CDC) and ACOG. Beyond the well-known risks to the baby, alcohol interferes with your own restorative sleep at a time when your body is already working overtime.
Many people assume a small glass of wine late in the third trimester is harmless for sleep. But research shows that even moderate alcohol intake reduces sleep quality in pregnant women, increasing the number of nighttime awakenings and reducing total sleep time.
What to do instead: For a relaxing evening ritual, try a warm cup of non-caffeinated herbal tea like chamomile, lemon balm, or lavender. Some pregnant people find that a warm (not hot) cup of milk or unsweetened oat milk with a pinch of cinnamon provides similar comfort without the downsides of alcohol.
Caveat: Always check with your healthcare provider before introducing new herbal teas, as some herbs are not recommended during pregnancy.
Hydration tips that support sleep
Staying hydrated is crucial during pregnancy, but drinking too close to bedtime guarantees those 3 am bathroom trips. The trick is to front-load your fluids earlier in the day.
- Drink the majority of your water between waking and early afternoon.
- Slow down fluids after 7 pm, or about two hours before you plan to sleep.
- Sip only small amounts in the evening if you feel thirsty.
Water remains the gold standard for hydration during pregnancy. Avoid electrolyte drinks with added sugar or caffeine. If plain water feels boring, add a slice of cucumber or a sprig of mint for subtle flavor without the sleep-harming additives.
When sleep troubles persist
If you've cut out these three drinks and are still struggling with sleep, it may be worth discussing with your obstetrician or a sleep specialist. Conditions like restless legs syndrome, gastroesophageal reflux disease (GERD), and pregnancy-related insomnia often require tailored strategies beyond beverage adjustments.
Remember that sleep disturbances are common in pregnancy—especially in the third trimester—but they don't have to be inevitable. Small changes to your evening beverage routine can sometimes bring surprising relief.
