Cherries contain a small but measurable amount of melatonin, with Montmorency tart cherries leading at about 13.5 nanograms per gram of fruit. That’s roughly 13.5 billionths of a gram per cherry’s worth of flesh. For context, a typical melatonin supplement contains 1 to 5 milligrams, which is tens of thousands of times more than you’d get from even a large bowl of cherries.
Melatonin Levels by Cherry Variety
Not all cherries carry the same amount of melatonin. Research published in the Journal of Agricultural and Food Chemistry measured two popular tart cherry varieties and found a sixfold difference between them. Montmorency tart cherries contained 13.46 nanograms per gram, while Balaton tart cherries came in at just 2.06 nanograms per gram.
Sweet cherries, the dark red Bing and Rainier varieties you find in grocery stores during summer, contain melatonin as well but generally in lower concentrations than Montmorency. If your goal is maximizing melatonin intake from fruit, Montmorency is the variety that shows up most consistently in sleep research.
Why Cherries May Still Help Sleep
The raw melatonin numbers in cherries look tiny compared to a supplement, so it’s fair to wonder whether eating cherries could make any difference at all. The answer seems to involve more than just the melatonin itself.
Tart cherries contain a compound called procyanidin B-2 that appears to protect the body’s own melatonin production pathway. Your body makes melatonin from tryptophan, an amino acid. But an enzyme can divert tryptophan away from melatonin production, especially during inflammation. In lab studies, procyanidin B-2 from cherry juice blocked that enzyme in a dose-dependent way, meaning more of the compound produced a stronger effect. The result: more tryptophan stays available for your body to convert into melatonin on its own. Participants in a pilot study who drank tart cherry juice showed shifts in their blood chemistry consistent with this mechanism, with less tryptophan being diverted away from melatonin production.
So cherries appear to work on two fronts. They deliver a small direct dose of melatonin, and they help your body hang onto the raw materials it needs to make more.
Fresh Cherries vs. Juice
Most sleep studies use tart cherry juice rather than whole fruit, partly for practical reasons. Fresh tart cherries have a short growing season and aren’t widely stocked in stores. They’re the sour kind used in pies and baking, not the sweet cherries you snack on. Juice concentrate is available year-round and easier to standardize in a study.
There isn’t solid published data comparing melatonin levels across fresh, dried, and juice forms of the same cherry variety. What we do know is that juice concentrate packs more cherry material into a single serving than you’d likely eat as whole fruit. A glass of tart cherry juice made from concentrate represents a large number of cherries. Dried cherries retain many of the fruit’s compounds but also concentrate the sugar content significantly.
How Much Juice the Studies Actually Used
The most common protocol in sleep research is two 8-ounce (240 mL) glasses of tart cherry juice per day, one in the morning and one in the evening. A 2018 study of adults over 50 found that participants drinking this amount for two weeks slept more than those given a placebo. A 2022 study of elite athletes used a slightly smaller dose of 200 mL twice daily and also observed benefits.
That’s roughly 16 ounces of juice a day, which adds up to a meaningful amount of sugar and calories. Tart cherry juice concentrate, diluted at home, is one way to reduce the volume while keeping the active compounds. Most products recommend mixing one or two tablespoons of concentrate into water.
Putting the Numbers in Perspective
If you ate 100 grams of Montmorency cherries (roughly a generous handful), you’d consume about 1,350 nanograms of melatonin, or 0.00135 milligrams. A standard low-dose melatonin supplement is 0.5 mg, which is about 370 times that amount. Even drinking two large glasses of tart cherry juice won’t deliver melatonin in supplement-level quantities.
This doesn’t mean cherries are useless for sleep. The combination of direct melatonin, tryptophan protection, and anti-inflammatory compounds in tart cherries appears to produce effects that the melatonin content alone wouldn’t predict. But if you’re expecting cherries to replace a melatonin supplement milligram for milligram, the math doesn’t work out. Cherries are better understood as a food that gently supports your body’s own sleep chemistry rather than a high-dose melatonin delivery system.