Can Tart Cherry Juice Help You Sleep? What the Research Says

Tart cherry juice may help improve sleep quality by raising melatonin levels and supporting your body’s natural sleep cycle. Research suggests that drinking tart cherry juice regularly can increase total sleep time and reduce the time it takes to fall asleep, especially in adults with mild insomnia. The science behind these effects points to two key compounds: melatonin found naturally in tart cherries, and tryptophan, an amino acid that helps your body produce melatonin on its own.

What are tart cherries, and how do they affect sleep?

Tart cherries, also called sour cherries or Montmorency cherries, are a variety of cherry known for their sharp, tangy flavor and deep red color. They are different from the sweet cherries you find in grocery store produce sections. Tart cherries are grown primarily for their nutritional properties and are most commonly available as juice, concentrate, powder, or capsule supplements.

Tart cherries are rich in anthocyanins (an-thoe-SY-uh-ninz), which are plant-based antioxidants that give them their bright red color and contribute to their anti-inflammatory properties. They are also one of the few food sources that contain measurable amounts of naturally occurring melatonin, the hormone that regulates sleep.

What does the research say about tart cherry juice and sleep?

Two key studies have examined how tart cherry juice affects sleep in adults, and both show meaningful improvements in sleep time and quality.

European Journal of Nutrition, 2012 Study

A 2012 study published in the European Journal of Nutrition followed 20 healthy adult volunteers and measured how their sleep patterns changed after drinking approximately 1 ounce (30 milliliters) of tart cherry juice concentrate 30 minutes before their evening meal for seven days. Participants who drank the tart cherry juice showed significantly higher melatonin levels compared to their baseline readings and compared to a placebo group. They also experienced longer total sleep time and better sleep efficiency, which refers to the percentage of time spent in bed that is actually spent sleeping.¹

American Journal of Therapeutics, 2018 Study

A 2018 study followed eight adults age 50 and older who had been diagnosed with chronic insomnia. Those who drank approximately 1 cup (240 milliliters) of tart cherry juice in the morning and another cup one to two hours before bed for two weeks experienced an average increase of 84 minutes of sleep per night.²

Both studies are considered preliminary because of their small sample sizes. Still, the results are consistent with what researchers understand about melatonin and sleep regulation, and they support tart cherry juice as a reasonable, low-risk addition to a broader sleep hygiene routine.

Why tryptophan may matter more than melatonin

While much of the attention around tart cherry juice focuses on its melatonin content, Ashley Dawson, a registered dietitian on staff at Texas Health Plano, points to a different compound as the more important factor.

“Small amounts of melatonin can be found in fruits, nuts, olive oil, and wine,” Dawson says. “There has been some buzz from studies showing that tart cherry juice resulted in better sleep, and people believe that tart cherry juice is high in melatonin, contributing to this. However, it’s not the melatonin alone in tart cherry juice but the tryptophan, which helps produce melatonin.”

Tryptophan is an essential amino acid, meaning your body cannot produce it on its own and must get it from food. Once absorbed, tryptophan is converted first into serotonin (a neurotransmitter that supports mood regulation and calm) and then into melatonin. This means that the tryptophan in tart cherries may be giving your body the raw materials it needs to produce more melatonin naturally, rather than simply delivering a dose of preformed melatonin.

Research is still ongoing on the precise mechanisms. But the combination of naturally occurring melatonin and tryptophan may explain why tart cherry juice appears to have a more noticeable effect on sleep than other melatonin-containing foods.

What to know for before you try tart cherry juice for sleep improvement

Tart cherry juice is not without trade-offs. Dawson cautions that tart cherry juice is relatively high in natural sugar, and that consuming it at night without factoring in your overall sugar intake could potentially work against your sleep goals. High blood sugar levels can interfere with deep sleep, so the sugar content matters.

If you want to try tart cherry juice for sleep, Dawson recommends choosing a product with no added sugars. Look for 100% pure tart cherry juice or concentrate, and check the nutrition label carefully. Juice blends and cocktail-style products often contain added sweeteners that can undermine the intended benefit.

As with any dietary change, talk with your physician or a registered dietitian before adding tart cherry juice regularly to your routine, particularly if you manage blood sugar, take medications that interact with certain foods, or have any chronic health conditions.

Tips for improving sleep with tart cherry juice

If you want to try tart cherry juice as part of your sleep routine, here is a practical approach based on what the research has used and what dietitians commonly recommend.

Choose a product without added sugars

Look for 100% pure tart cherry juice or concentrate. Avoid juice blends, cocktails, or products with sweeteners listed in the ingredients.

Time it intentionally

Most research protocols administered tart cherry juice 30 minutes to one hour before bedtime, when your body’s natural melatonin production is already beginning to rise. Some studies also included a morning serving.

Start with a small amount

A half-cup to one cup per serving is consistent with the amounts used in research. You do not need large quantities to see a potential effect.

Give it time

Try incorporating tart cherry juice consistently for two to four weeks before drawing conclusions about whether it is helping. Sleep changes are gradual and individual.

Pair it with good sleep habits

Tart cherry juice works best as a complement to healthy sleep practices: keeping a consistent bedtime, limiting screen exposure in the evening, and sleeping in a cool, dark room. No single food or supplement replaces the basics.

When to talk to a professional about your sleep

Tart cherry juice may help with mild, situational sleep difficulties. It is not a treatment for chronic insomnia or underlying sleep disorders such as obstructive sleep apnea (a condition in which breathing repeatedly stops and starts during sleep).

If you regularly have trouble falling asleep, staying asleep, or feeling rested, it is worth scheduling a conversation with your physician.

According to the Centers for Disease Control and Prevention (CDC), adults need at least 7 hours of sleep per night for optimal health. Adults who consistently fall short of that threshold face higher risks of conditions including heart disease, obesity, diabetes, and depression.³ Persistent poor sleep is a health issue worth taking seriously, and a good starting point is a conversation with your care team.

Frequently asked questions about tart cherry juice and sleep

How much tart cherry juice should I drink to help with sleep?

While there is no definitive consensus, most sleep-focused studies on tart cherry juice used between half a cup and one cup (120 to 240 milliliters; 4 to 8 oz.) per serving, typically consumed 30 minutes to one hour before bedtime^1,2,4. Some protocols included a second serving in the morning. Starting with a smaller amount and adjusting based on how you feel is a reasonable approach. Talk with your physician or a registered dietitian if you are unsure what amount is appropriate for you.

Does tart cherry juice work as well as a melatonin supplement?

Tart cherry juice and melatonin supplements work through different mechanisms and cannot be directly compared in terms of effectiveness. Tart cherry juice provides both naturally occurring melatonin and tryptophan, which supports your body’s own melatonin production. Melatonin supplements deliver a concentrated, direct dose. Research on tart cherry juice is still limited by small study sizes, so neither option has been definitively shown to be superior for all people. Your physician can help you decide what makes sense for your specific situation.

Are there any side effects from drinking tart cherry juice?

Tart cherry juice is generally well tolerated by healthy adults. The most relevant consideration is its sugar content. Drinking it in the evening adds natural sugars to your diet, which may affect blood sugar levels, particularly in people with diabetes or prediabetes. Some people may also experience digestive discomfort if they consume large quantities. Choosing a product with no added sugars and drinking it in moderate amounts reduces the risk of these effects.

Can I take tart cherry juice if I am already taking a sleep medication?

Whether tart cherry juice is safe to use alongside a sleep medication depends on the specific medication and your health history. Tart cherries contain compounds that may affect certain enzymes involved in drug metabolism. Talk with your physician or pharmacist before combining tart cherry juice with any prescription or over-the-counter sleep aid.

References

1. NIH National Library of Medicine. Effect of tart cherry juice (Prunus cerasus) on melatonin levels and enhanced sleep quality. European Journal of Nutrition.
2. American Journal of Therapeutics. Pilot Study of the Tart Cherry Juice for the Treatment of Insomnia and Investigation of Mechanisms
3. Centers for Disease Control & Prevention. FastStats: Sleep in Adults
4. Cleveland Clinic. Tart Cherry Juice for Sleep: Does it Really Work?