Social media is buzzing with talk of the “cortisol cocktail” — a bedtime beverage that influencers claim helps them unwind, sleep deeper, and wake up more refreshed. But how much of this is backed by science?

The drink, often made with magnesium powder, coconut water, and citrus juice (sometimes with added sparkling water or pink Himalayan salt), has gained popularity as a natural aid for stress and sleep. Its name references cortisol, the body’s main stress hormone.

With burnout, anxiety, and sleep issues on the rise, it’s no surprise that people are turning to trendy wellness rituals. But does this calming concoction actually do anything for your stress levels?

Magnesium and Stress Relief: What’s the Connection?

While there’s no concrete evidence supporting the effectiveness of the cortisol cocktail itself, some ingredients — especially magnesium — may offer benefits.

“Magnesium is a vital nutrient involved in hundreds of biological processes in the body,” said nutritionist Beth Edwards in a conversation with Healthline. “Stress increases magnesium loss through urine and depletes your stores, so replenishing it can be helpful.”

Nutritionist Amie Parry-Jones cited a 2020 study suggesting magnesium may help reduce cortisol levels, particularly in individuals with a deficiency.

“When cortisol is elevated, we also tend to lose more electrolytes,” said Parry-Jones. “Magnesium deficiency can show up as symptoms related to stress.”

Vitamin C and Electrolytes Offer Minor Benefits

Lemon or orange juice, another key component of the drink, provides a small amount of vitamin C — an antioxidant that supports adrenal health and the body’s stress response.

“The adrenal glands, which produce stress hormones like cortisol, rely on vitamin C to function well,” explained Edwards.

However, Parry-Jones noted that the studies showing stress benefits from vitamin C typically use high-dose supplements — not small amounts from juice.

Coconut water is another ingredient with modest potential. It’s rich in electrolytes like potassium, which may help correct imbalances caused by stress.

“Potassium may contribute to reducing cortisol, though the effect is likely minimal,” Parry-Jones added.

Potential Downsides: Sugar Spikes and Sleep Disruption

Despite its feel-good reputation, the cortisol cocktail might not be ideal for everyone — especially if consumed before bed.

“The sugar in fruit juice can cause a quick blood sugar spike, followed by a crash,” said Parry-Jones. “That crash may disrupt your sleep, causing restlessness or waking up at night.”

She explained that this drop in blood sugar could actually increase cortisol levels — the opposite of the intended effect.

Edwards suggests having the drink earlier in the day, paired with food, to help stabilize blood sugar.

Another concern is digestion. Sparkling water, often added for fizz, can cause bloating or reflux in some individuals, which could further interfere with sleep.

A Trend with Minimal Risk — But Also Minimal Impact

Ultimately, experts say that while the cortisol cocktail probably won’t hurt you, it’s unlikely to significantly reduce stress or balance hormone levels.

“The drink might offer a small amount of support for the body’s stress response, but the ingredient doses are quite low,” Edwards noted.

Parry-Jones agreed: “It’s unlikely to make a noticeable difference in long-term stress or cortisol management.”

That doesn’t mean it’s completely useless — the act of preparing and drinking the mocktail may serve as a calming ritual. But meaningful stress relief comes from more comprehensive lifestyle changes.

“Rather than focusing on one drink, look at your overall habits — sleep quality, nutrition, physical activity, and emotional health,” said Edwards.

And if you do feel better after drinking it? It might not be the drink at all.

“There’s likely a placebo effect at play,” Parry-Jones said. “It can feel powerful at first but tends to fade over time.”

If stress is taking a serious toll, experts recommend consulting a healthcare provider to create a personalized plan — something no trendy beverage can replace.