Quick Answer: Tart cherry juice (Montmorency variety) contains natural melatonin and tryptophan, both of which can support sleep. A 2010 Pigeon et al. study (Journal of Medicinal Food) reported small improvements in sleep duration in older adults with insomnia. Try 240 ml of tart cherry juice 1 to 2 hours before bed. Not a miracle cure.
In This Guide
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What the Research Actually Says
Tart cherry juice has become one of the most popular natural sleep remedies in recent years, and unlike many wellness trends, there is actual clinical research behind it. Here is what the studies show:
Key Clinical Findings
A 2018 pilot study published in the American Journal of Therapeutics found that adults with insomnia who drank Montmorency tart cherry juice twice daily for two weeks slept an average of 84 minutes longer per night and had significantly improved sleep efficiency compared to placebo. An earlier 2012 study in the European Journal of Nutrition confirmed that tart cherry juice increased exogenous melatonin levels and improved sleep duration and quality in healthy volunteers.
Important context: these are small studies (typically 8 to 20 participants) of short duration (1 to 2 weeks). The results are statistically significant and consistent across multiple trials, but we are not talking about the same evidence base as pharmaceutical sleep aids. Tart cherry juice is promising, not proven beyond all doubt.
The Active Compounds
Tart cherries contain several compounds relevant to sleep:
Sleep-Relevant Compounds in Tart Cherries
- Melatonin: Tart cherries are one of the few natural food sources of melatonin, the hormone that regulates your sleep-wake cycle. Montmorency cherries contain approximately 13.5 ng of melatonin per gram, significantly more than most other fruits.
- Tryptophan: An amino acid precursor to serotonin and melatonin. Tart cherry juice provides tryptophan in a form your body can use, though in modest amounts compared to supplements.
- Proanthocyanidins: These polyphenolic compounds may inhibit indoleamine 2,3-dioxygenase, an enzyme that breaks down tryptophan. By slowing tryptophan degradation, more tryptophan remains available for melatonin production.
- Anti-inflammatory compounds: Anthocyanins in tart cherries have anti-inflammatory properties comparable to some NSAIDs. Reduced inflammation may indirectly improve sleep quality, especially for people with pain conditions.
The combination of these compounds working together likely explains why tart cherry juice appears more effective than melatonin supplements alone. It is not just the melatonin; it is the tryptophan availability, the anti-inflammatory effect, and the proanthocyanidin interaction working as a package.
Why Tart Cherries (Not Sweet Cherries)
Not all cherries are created equal for sleep. The research specifically uses Montmorency tart cherries (also called sour cherries), not the sweet Bing or Rainier cherries you buy for eating.
| Factor | Tart (Montmorency) | Sweet (Bing/Rainier) |
|---|---|---|
| Melatonin content | 13.5 ng/g (significantly higher) | Lower, varies by variety |
| Anthocyanin levels | Very high (deep red colour) | Moderate |
| Tryptophan availability | Higher due to proanthocyanidin interaction | Lower |
| Anti-inflammatory effect | Stronger (studied in gout and exercise recovery) | Moderate |
| Taste | Sour, usually consumed as juice concentrate | Sweet, eaten fresh |
| Availability in Canada | Juice concentrate at most grocery stores | Seasonal fresh fruit |
In Canada, you can find tart cherry juice concentrate at most grocery stores (look in the juice or health food aisle) and health food stores. Common Canadian brands include Cherry Juice Co., Dynamic Health, and various organic options. Look for "100% Montmorency tart cherry juice concentrate" on the label.
How to Use Tart Cherry Juice for Sleep
Dosage and Timing
Based on the clinical studies:
- Amount: 240 ml (1 cup or 8 oz) of tart cherry juice, typically made by mixing 30 ml of concentrate with 210 ml of water.
- Timing: Drink once in the morning and once 1 to 2 hours before bed. The twice-daily protocol was used in most studies.
- Duration: Allow at least 1 to 2 weeks of consistent use before evaluating results. The studies showed effects building over the first week.
- Form: Juice concentrate diluted with water is most studied. Capsules and dried cherry supplements have less research behind them.
Practical Tips
Tart cherry juice concentrate is sour. Mixing it with sparkling water makes it more pleasant. Some people add it to smoothies, but the morning dose should be separate from heavy meals for best absorption. Keep the concentrate refrigerated after opening; it typically lasts 3 to 4 weeks. At about $15 to $20 per bottle, a 2-week supply costs roughly $1 to $1.50 per day.
What to Expect
Tart cherry juice is not a sedative. You will not feel drowsy 20 minutes after drinking it like you might with a pharmaceutical sleep aid. The effect is gradual and cumulative:
- Days 1 to 3: Most people notice no change. The melatonin boost is subtle.
- Days 4 to 7: Some people report falling asleep slightly faster or feeling more relaxed before bed.
- Days 7 to 14: The clinical improvements in sleep duration and efficiency typically emerge in the second week of consistent use.
If you see no improvement after two weeks of consistent twice-daily use, tart cherry juice may not be the right intervention for your sleep issues. That does not mean nothing will help; it means the problem may lie elsewhere.
Who Benefits Most (and Who Should Be Cautious)
Good Candidates
- People with mild insomnia who want to try a natural approach before medication
- Older adults (melatonin production naturally declines with age, making dietary sources more impactful)
- People with inflammatory conditions like arthritis or fibromyalgia (the anti-inflammatory benefits overlap with sleep improvement)
- Athletes and active people (tart cherry juice also aids exercise recovery, which supports better sleep)
People Who Should Be Cautious
- Diabetes or blood sugar concerns: Tart cherry juice contains natural sugars (about 25 g per 240 ml serving of reconstituted concentrate). Monitor blood sugar if relevant.
- Kidney stone history: Cherries contain moderate oxalates. If you have a history of calcium oxalate kidney stones, consult your doctor.
- Blood thinning medications: The anti-inflammatory properties may interact with anticoagulants. Check with your healthcare provider.
- GI sensitivity: The acidity of tart cherry juice can cause stomach upset in some people. Start with a smaller dose.
Brad, Owner (Since 1987): "We are a mattress store, not a health food store, so I will be honest: tart cherry juice is one piece of the sleep puzzle. The biggest piece is still your mattress and pillow. I have seen people try every supplement and sleep hack while sleeping on a 15-year-old mattress that has lost all its support. Fix the foundation first, then add the extras."
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Other Evidence-Based Sleep Foods
If tart cherry juice interests you, here are other foods with research supporting their sleep benefits:
| Food | Active Compound | Evidence Level | How to Use |
|---|---|---|---|
| Kiwi fruit | Serotonin, antioxidants | Moderate (2 kiwis 1 hour before bed improved onset and duration) | Eat 2 kiwis 1 hour before bed |
| Warm milk | Tryptophan, casein peptides | Moderate (may have psychological comfort effect beyond biochemistry) | 1 cup warm milk 30 min before bed |
| Walnuts | Melatonin, omega-3 fatty acids | Preliminary (contain melatonin, but sleep-specific studies are limited) | Small handful as evening snack |
| Chamomile tea | Apigenin (binds to GABA receptors) | Moderate (reduces anxiety markers, mild sedative effect) | 1 cup 30 to 60 min before bed |
| Fatty fish (salmon) | Omega-3, vitamin D | Moderate (improved sleep quality in a 6-month study) | 3 servings per week |
No single food is a sleep solution on its own. These work best as part of a broader sleep hygiene routine that includes consistent bedtimes, reduced screen exposure, a cool bedroom, and a supportive mattress.
The Complete Sleep Picture
Tart cherry juice addresses the biochemical side of sleep. But sleep quality depends on multiple factors working together:
The Sleep Quality Framework
- Physical support: Your mattress and pillow provide the structural foundation for proper spinal alignment and pressure relief. This is the most impactful single factor you can control.
- Sleep environment: Room temperature (16 to 19°C is ideal), darkness, noise control, and air quality all affect sleep architecture.
- Behavioural habits: Consistent sleep schedule, screen reduction, caffeine timing, and physical activity patterns.
- Nutrition: Tart cherry juice, sleep-supportive foods, and avoiding heavy meals close to bedtime.
- Stress management: Anxiety and rumination are the most common barriers to falling asleep. Address the mind, not just the body.
Start with Your Mattress
If you are exploring tart cherry juice and other natural sleep aids, make sure your mattress is not undermining your efforts. A mattress that causes pressure points, sagging, or temperature issues will negate any benefit from dietary changes. At Mattress Miracle in Brantford, we help you build a sleep environment that supports every other improvement you make. Visit us at 441 1/2 West Street or call (519) 770-0001.
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Call 519-770-0001Frequently Asked Questions
How long does it take for tart cherry juice to work for sleep?
Most studies show measurable sleep improvements after 1 to 2 weeks of twice-daily consumption. Some people notice subtle changes within the first week, but the full effect requires consistent use. It is not an immediate sedative like a sleep medication.
Can I eat tart cherries instead of drinking the juice?
Fresh Montmorency tart cherries are seasonal and not widely available year-round in Canada. Dried tart cherries retain some melatonin and anthocyanins but have less research behind them. Juice concentrate is the most studied and most accessible form.
Is tart cherry juice safe to take with melatonin supplements?
Combining tart cherry juice with supplemental melatonin could result in excessive melatonin intake, potentially causing grogginess, headaches, or disrupted sleep cycles. If you are already taking melatonin supplements, consult your healthcare provider before adding tart cherry juice.
Where can I buy tart cherry juice concentrate in Ontario?
Most major grocery chains in Ontario carry tart cherry juice concentrate in the juice or health food aisle. Health food stores, Bulk Barn, and online retailers also stock it. Look for "100% Montmorency tart cherry" on the label with no added sugars or fillers.
Does Mattress Miracle sell sleep supplements?
No, we focus on mattresses, pillows, and sleep accessories. But we strongly believe that a quality mattress is the foundation of good sleep. Tart cherry juice and other natural aids work best when your physical sleep environment is already optimized. Visit us at 441 1/2 West Street in Brantford to ensure your mattress is supporting your sleep goals.
Sources
- Losso, J.N., et al. (2018). Pilot study of the tart cherry juice for the treatment of insomnia and investigation of mechanisms. American Journal of Therapeutics, 25(2), e194-e201. doi.org/10.1097/MJT.0000000000000584
- Howatson, G., et al. (2012). Effect of tart cherry juice on melatonin levels and enhanced sleep quality. European Journal of Nutrition, 51(8), 909-916. doi.org/10.1007/s00394-011-0263-7
- Pigeon, W.R., et al. (2010). Effects of a tart cherry juice beverage on the sleep of older adults with insomnia. Journal of Medicinal Food, 13(3), 579-583. doi.org/10.1089/jmf.2009.0096
- Kelley, D.S., et al. (2018). A review of the health benefits of cherries. Nutrients, 10(3), 368. doi.org/10.3390/nu10030368
- Krauchi, K. (2007). The thermophysiological cascade leading to sleep initiation in relation to phase of entrainment. Sleep Medicine Reviews, 11(6), 439-451. doi.org/10.1016/j.smrv.2007.07.001