Why Tart Cherries?
Montmorency tart cherries — not sweet cherries — contain unique compounds that make them one of the most research-backed natural sleep aids available. They’re naturally high in melatonin, tryptophan, and anthocyanins (anti-inflammatory compounds), creating a triple-action effect for sleep quality and exercise recovery.
Unlike synthetic melatonin supplements, tart cherry juice provides melatonin in its natural matrix along with cofactors that may enhance absorption and utilization. The anti-inflammatory effects are a bonus for anyone who trains regularly.
The Science: Three Mechanisms
1. Natural Melatonin Content
Montmorency tart cherries contain 0.01-0.05 mg of melatonin per gram. A standard 8 oz serving of tart cherry juice concentrate provides a physiologically relevant dose that increases circulating melatonin levels. Research shows tart cherry juice consumption increases urinary melatonin and improves sleep quality metrics.
2. Tryptophan Availability
Tart cherries contain tryptophan — the amino acid precursor to both serotonin and melatonin. Additionally, the anthocyanins in tart cherries may inhibit an enzyme (IDO) that breaks down tryptophan, effectively increasing the tryptophan available for melatonin synthesis.
3. Anti-Inflammatory Action
The anthocyanins in tart cherries reduce inflammation and oxidative stress. For athletes, this means less muscle damage and faster recovery. For sleep, reduced systemic inflammation may improve sleep architecture — particularly deep sleep stages.
Research Findings on Sleep
Study 1: Insomnia in Older Adults
A 2010 study gave older adults with insomnia 8 oz of tart cherry juice morning and evening for 2 weeks. Results showed:
- Significant reductions in insomnia severity
- Increase in total sleep time by an average of 84 minutes
- Improvement in sleep efficiency (time in bed vs. time asleep)
- Elevated urinary melatonin levels
Study 2: Sleep Quality in Healthy Adults
A 2012 study on healthy adults showed that 30 ml of tart cherry juice concentrate twice daily for 7 days increased sleep time by 39 minutes and improved overall sleep efficiency. Notably, these were people without existing sleep problems — suggesting tart cherries enhance normal sleep too.
Research Findings on Exercise Recovery
Reduced Muscle Damage
Multiple studies show tart cherry juice consumed before and after strenuous exercise reduces markers of muscle damage (creatine kinase) and inflammation (CRP). The effect is particularly strong for eccentric exercise — the type that causes the most soreness.
Faster Strength Recovery
Marathon runners who consumed tart cherry juice in the week before and after a race showed faster isometric strength recovery compared to placebo. The anthocyanins appear to reduce the inflammatory cascade that follows intense exercise.
How to Use Tart Cherry Juice
For Sleep
- Dose: 8 oz (240ml) of juice OR 1 oz (30ml) of concentrate
- Timing: 1-2 hours before bed (and optionally in the morning for additional benefit)
- Duration: Effects build over 3-5 days of consistent use. Not a one-time fix.
- Calories: 8 oz of juice is ~120-140 calories. Factor this into your daily intake.
For Exercise Recovery
- Dose: 8-12 oz twice daily — the day before, day of, and 2 days after intense training
- Timing: One serving in the morning, one immediately post-workout
- Loading: For competition/events, start 4-7 days before for maximum effect
Product Recommendations
Best Overall: CherryWorks Tart Cherry Concentrate
Montmorency cherries sourced from Michigan. No added sugar. Each ounce of concentrate equals about 8 oz of juice. Check price on Amazon →
Best Budget: Dynamic Health Tart Cherry Juice Concentrate
Good quality concentrate at a lower price point. The large bottle lasts a while at 1 oz servings. Check price on Amazon →
Best Capsules: Sports Research Tart Cherry Concentrate
For those who don’t want the sugar or calories from juice. Each softgel provides an equivalent anthocyanin dose. Convenient for travel. Check price on Amazon →
Best Ready-to-Drink: Cheribundi Tart Cherry Juice
Pre-diluted and ready to drink. Higher price per serving but convenient. No concentrate mixing required. Check price on Amazon →
Potential Downsides
- Sugar content — 8 oz of juice contains ~25g natural sugar. Diabetics should monitor blood glucose response.
- Calories — 120-140 calories per serving. Not ideal if you’re fasting or cutting calories.
- GI effects — some people experience mild stomach discomfort or loose stools initially.
- Cost — quality concentrate runs $15-25 per month for daily use.
- Medication interactions — tart cherry juice may interact with blood thinners due to anti-inflammatory effects. Consult your doctor if on warfarin or similar medications.
The Bottom Line
Tart cherry juice is one of the most well-supported natural sleep aids available. The combination of natural melatonin, tryptophan support, and anti-inflammatory compounds creates genuine benefits for both sleep quality and exercise recovery. It’s not as potent as prescription sleep medication — but it has fewer side effects and costs less than a dollar per night. Worth trying for anyone struggling with sleep onset, nighttime waking, or post-workout soreness.