Sleepy Girl Mocktail: Recipe, Benefits and Does It Work?

The sleepy girl mocktail is a bedtime drink made from tart cherry juice, magnesium powder and sparkling water or soda, popularized on social media as a way to wind down at night. The mocktail hasn't been tested as a recipe, but its two main ingredients have been studied on their own. Here's the recipe, a lower-sugar version, what that research measured, and who should check with a clinician first.

Key Takeaways

• The classic recipe is about half a cup of tart cherry juice, one serving of magnesium powder and a splash of sparkling water or soda over ice.
• Small, short trials of tart cherry juice measured more total sleep time and higher urinary melatonin.
• A review of magnesium trials in older adults found people fell asleep about 17 minutes sooner than with placebo, with evidence the authors rated low quality.
• Tart cherry juice has about 12 grams of sugar per 100 grams, so plain sparkling water and a smaller pour keep the drink lighter.
• People with kidney disease, or who take antibiotics, osteoporosis drugs or other medicines, should ask a healthcare provider before adding magnesium.

What Is the Sleepy Girl Mocktail?

The sleepy girl mocktail took off on TikTok as a nightly ritual: pour tart cherry juice into a glass, stir in a magnesium powder, top it with something fizzy and sip it while you get ready for bed. It feels like a nightcap without alcohol, and it takes a minute to make.

It belongs to the same family of social media drink rituals as the cortisol cocktail, which mixes orange juice, coconut water and sea salt for the afternoon. In both cases the useful question is what each ingredient does, and how much ends up in the glass.

For the bigger picture, our hub on why quality rest matters covers the evening habits that count more than any single drink.

Sleepy Girl Mocktail Recipe

Classic version

• 1/2 cup (4 oz) 100% tart cherry juice, unsweetened
• 1 serving magnesium powder (follow the label; magnesium glycinate is the most common pick)
• 4 to 6 oz sparkling water, a prebiotic soda or lemon lime soda
• Ice, plus a lime wedge if you like

Stir the magnesium into the juice, add ice and top with the fizz. Most people drink it 30 to 60 minutes before bed.

Lower-sugar version

• 1/4 cup (2 oz) 100% tart cherry juice
• 1 serving unflavored magnesium powder
• 6 to 8 oz plain sparkling water instead of soda
• Ice and a squeeze of lime

Plain sparkling water removes the added sugar, and halving the juice roughly halves the fruit sugar. The drink is tarter and lighter.

What the Research Says About Each Ingredient

Tart cherry juice

Montmorency tart cherries naturally contain small amounts of melatonin, the hormone that helps regulate the sleep and wake cycle. In a randomized, placebo-controlled crossover trial, 20 healthy adults drank a tart cherry juice concentrate or a placebo for 7 days. With the cherry concentrate, total urinary melatonin was higher, and time in bed, total sleep time and sleep efficiency measured by actigraphy all increased (Howatson et al., 2012).

Two pilot studies enrolled older adults with chronic insomnia. In one, 15 participants drank a tart cherry juice blend or a placebo drink for 2 weeks each; compared with placebo, the cherry drink reduced minutes awake after falling asleep, but it did not significantly change how fast people fell asleep, total sleep time or sleep efficiency, and the authors described the effects as modest (Pigeon et al., 2010). In the other, 8 adults over 50 who completed the study drank 240 mL of cherry juice twice a day for 2 weeks, and sleep time measured by polysomnography increased by 84 minutes (Losso et al., 2018).

Notice the amounts: the Losso trial used a full cup of juice twice a day, far more than a typical mocktail. Our guide to tart cherry for sleep goes deeper, and our list of foods with melatonin shows where cherries sit next to other foods.

Magnesium

A systematic review and meta-analysis pooled three randomized trials in 151 older adults. Compared with placebo, people taking oral magnesium fell asleep about 17 minutes sooner; total sleep time rose by about 16 minutes, a difference that was not statistically significant. The authors rated the trials at moderate to high risk of bias and the overall evidence as low to very low quality (Mah and Pitre, 2021).

Those trials enrolled older adults, so younger people may respond differently. Our guide to magnesium glycinate for sleep covers the forms and amounts people use.

Ingredient	Why it's in the drink	What research measured
Tart cherry juice	Natural trace melatonin and plant compounds	Higher urinary melatonin and more total sleep time in small, short trials
Magnesium powder	An essential mineral the body needs every day	About 17 minutes faster sleep onset versus placebo in older adults, low quality evidence
Sparkling water or soda	Taste and volume	Not studied for sleep; soda adds sugar

For tart cherry juice research beyond sleep, including muscle soreness after exercise, see tart cherry juice benefits.

How Much Sugar Is in Tart Cherry Juice?

USDA FoodData Central lists tart cherry juice at about 12.2 grams of total sugars per 100 grams (USDA FoodData Central). A half cup pour works out to roughly 15 grams of sugar before you add any soda. That's worth knowing if you watch your sugar intake or drink this every night.

To lighten it, buy 100% juice with no added sugar, use a quarter cup, and top with plain sparkling water. Concentrate is far more sugar dense per spoonful, so dilute it well.

Which Magnesium Is Best: Glycinate or Citrate?

Most sleepy girl mocktail recipes call for magnesium glycinate, and there's a practical reason. Magnesium citrate is absorbed well, but it's also sold as a saline laxative: it pulls water into the stool, and loose or more frequent stools are its main side effect (MedlinePlus). The NIH Office of Dietary Supplements notes that high doses of supplemental magnesium often cause diarrhea, and sets the adult upper limit for magnesium from supplements and medicines at 350 mg a day (NIH ODS).

Glycinate (also sold as bisglycinate) binds magnesium to the amino acid glycine and is a common evening pick. Our comparison of magnesium bisglycinate vs glycinate explains the naming, and our page on magnesium glycerophosphate covers the second form used in our powder.

For other bedtime drinks and what studies measured for each, see our guide to drinks that help you sleep. For tart cherry and magnesium taken together outside the drink, see our guide to tart cherry and magnesium.

Who Should Be Careful

• Kidney disease: the NIH notes that the risk of magnesium toxicity rises with impaired kidney function or kidney failure, because the kidneys can't clear the excess. Talk to your doctor before using magnesium supplements.
• Antibiotics: magnesium binds to tetracyclines such as doxycycline and quinolones such as ciprofloxacin. The NIH advises taking them at least 2 hours before or 4 to 6 hours after magnesium.
• Osteoporosis medicines: magnesium can reduce absorption of oral bisphosphonates such as alendronate; separate them by at least 2 hours.
• Diuretics and long-term acid reducers: these change how much magnesium your body keeps, so ask your prescriber what's right for you.
• Pregnancy, nursing and other medicines: check with a healthcare provider before starting a nightly supplement routine.

Where Our Products Fit

If you like the idea of the sleepy girl mocktail but not the juice sugar or the shopping list, a powder version does the same job in one scoop. Our Melatonin-Free Sleep Powder (coming soon, waitlist open, $59 for 30 servings) combines both mocktail ingredients and adds three more. Each 9.5 g scoop contains:

• Tart cherry (Prunus cerasus) fruit powder, 2,000 mg, plus tart cherry fruit extract, 500 mg
• Magnesium, 200 mg (48% DV): 100 mg from magnesium bisglycinate and 100 mg from magnesium glycerophosphate
• Glycine, 3,000 mg (see our guide to glycine for sleep)
• Myo-inositol, 2,000 mg
• Apigenin from chamomile flower, 50 mg (see our apigenin guide)

It's an unsweetened tart cherry flavor with no added sugar or sweeteners and no added melatonin (tart cherries naturally contain trace amounts). Mix 1 scoop into 8 oz of plain or sparkling water 30 to 60 minutes before bed, and take no more than 1 scoop a day. It's designed to support restful sleep and help you wind down at night. Its 200 mg of magnesium sits under the 350 mg daily upper limit for supplemental magnesium, but count any other magnesium you take. For other options, see our roundup of sleep supplements without melatonin.

The powder is not for pregnant or nursing women or anyone under 18. Ask a healthcare provider before use if you take medication, especially blood thinners such as warfarin, sedatives or prescription sleep medicines. It may cause drowsiness, so avoid it with alcohol, and avoid it if you're allergic to chamomile, ragweed, chrysanthemums, marigolds or daisies.

If you'd rather skip a drink altogether, our Theanine Nasal Spray delivers 36 mg of L-theanine per serving (one spray in each nostril), absorbed through the lining of the nose.

Frequently Asked Questions

Does the sleepy girl mocktail actually work?

The drink itself hasn't been tested. Small, short tart cherry juice trials measured more sleep time, and magnesium trials in older adults measured somewhat faster sleep onset. One glass usually holds less than those studies used, so think of it as a pleasant part of a wind down routine rather than a sure thing.

When should I drink a sleepy girl mocktail?

Most people drink it 30 to 60 minutes before bed, which also leaves room for a bathroom trip before you lie down. Keep the rest of your evening calm too; our tips on how to fall asleep fast pair well with it.

Can I drink a sleepy girl mocktail every night?

Many people do. Watch the sugar from juice and soda, and keep total supplemental magnesium within the NIH adult limit of 350 mg a day. If you have kidney disease or take regular medication, ask your doctor first.

Can kids drink a sleepy girl mocktail?

Our Melatonin-Free Sleep Powder is not for anyone under 18. For children, ask a pediatrician before giving any magnesium supplement or sleep drink; a small glass of tart cherry juice on its own is simply a fruit juice.

Is there a sleepy girl mocktail powder?

Yes. Our coming-soon Melatonin-Free Sleep Powder puts tart cherry and magnesium in one unsweetened scoop, plus glycine, myo-inositol and apigenin, to mix into plain or sparkling water.

Does tart cherry juice contain melatonin?

Tart cherries naturally contain small amounts of melatonin, and in one trial a tart cherry concentrate raised urinary melatonin compared with placebo. Read more in our complete guide to melatonin.

Sources

1. Howatson G, Bell PG, Tallent J, Middleton B, McHugh MP, Ellis J. Effect of tart cherry juice (Prunus cerasus) on melatonin levels and enhanced sleep quality. Eur J Nutr. 2012. PMID 22038497
2. Pigeon WR, Carr M, Gorman C, Perlis ML. Effects of a tart cherry juice beverage on the sleep of older adults with insomnia: a pilot study. J Med Food. 2010. PMID 20438325
3. Losso JN, Finley JW, Karki N, et al. Pilot study of the tart cherry juice for the treatment of insomnia and investigation of mechanisms. Am J Ther. 2018. PMID 28901958
4. Mah J, Pitre T. Oral magnesium supplementation for insomnia in older adults: a systematic review and meta-analysis. BMC Complement Med Ther. 2021. PMID 33865376
5. NIH Office of Dietary Supplements. Magnesium: Fact Sheet for Health Professionals. ods.od.nih.gov
6. MedlinePlus. Magnesium Citrate: Drug Information. medlineplus.gov
7. USDA FoodData Central. Cherry juice, tart (SR Legacy, FDC ID 167807). fdc.nal.usda.gov

Our products are not intended to diagnose, treat, cure or prevent any disease. This article is for education only and is not medical advice.