Sleepy Girl Mocktail — The Science-Backed Bedtime Drink TikTok Turned Mainstream
In early 2024, a TikTok creator named Gracie Norton posted a 30-second video mixing tart cherry juice, magnesium powder, and Olipop soda in a wine glass before bed. She called it her “sleepy girl mocktail.” Within 72 hours, the video had tens of millions of views. Within a month, tart cherry juice was sold out at Whole Foods locations across the country.
What made this trend stick — beyond the initial virality — is that the drink actually works for a lot of people. And unlike most wellness TikTok trends, there’s credible science behind the two key ingredients.
The Science Behind the Sleep Claims
Tart cherry juice and melatonin. Tart (Montmorency) cherries are one of the few food sources of naturally occurring melatonin. A 2012 study published in the European Journal of Nutrition found that adults who drank tart cherry juice twice daily increased their sleep time by an average of 25 minutes and had significantly better sleep efficiency compared to a placebo. A follow-up study in the journal Nutrients found similar results in older adults with insomnia. The effect isn’t as strong as pharmaceutical melatonin, but it’s real and consistent.
Magnesium and the nervous system. Magnesium plays a central role in over 300 enzymatic reactions in the body, including the regulation of GABA receptors — the brain’s primary “calm down” signaling system. Low magnesium levels are associated with poor sleep quality, and supplementation has been shown in randomized controlled trials to improve sleep onset time, sleep duration, and sleep efficiency in adults with insomnia. Magnesium glycinate is the most bioavailable oral form and is gentle enough for nightly use.
Why the Prebiotic Soda?
The prebiotic soda (Olipop, Poppi, or plain sparkling water) is the delivery mechanism, not an active sleep ingredient. It adds carbonation, makes the drink feel festive and drink-worthy, and — in the case of Olipop — adds natural flavors that make the tart cherry more palatable. If you want zero extra sugar, sparkling water does the job. The mocktail without the soda is just a glass of purple cherry juice, which works fine but doesn’t photograph or film as well.
Getting the Tart Cherry Juice Right
This is where most people go wrong. The TikTok trend calls for “tart cherry juice,” but most of what’s labeled “cherry juice” at grocery stores is a sweetened blend of apple or grape juice with cherry flavoring. Read the label. You want:
- 100% pure tart (Montmorency) cherry juice — no added sugars, no juice blends
- Brands like Cheribundi, Eden Foods, or Lakewood Organic are reliable
- It should be refrigerated after opening and will taste very tart — that’s correct
The tartness is functional: it indicates the actual cherry content. Sweetened cherry drinks lack the melatonin and anthocyanin levels that produce the sleep effects.
Three Variations
Lavender sleepy girl: Add 1 tablespoon of lavender simple syrup (simmer 1 cup water + 1/2 cup sugar + 2 tablespoons dried culinary lavender for 5 minutes, strain). Lavender has mild anxiolytic properties and the floral note pairs beautifully with tart cherry.
Warm version: Heat the cherry juice gently, stir in the magnesium powder, and drink in a mug with a cinnamon stick. Skip the soda. This is especially comforting in fall and winter.
Tart cherry moon milk: Warm 1 cup oat milk, whisk in 3 tablespoons tart cherry juice concentrate, magnesium powder, a pinch of cinnamon, and 1 teaspoon honey. Pour into a mug, top with oat milk foam if you have a frother. Tastes like a cherry hot chocolate.
