You slept eight hours. So why do you still feel like you never went to bed?

Millions of people take a melatonin gummy every night and wake up in a fog that lasts till lunch. It has a nickname now — the “melatonin hangover.” Here’s what’s actually going on, and why the fix probably isn’t what you’ve been told.

You know the morning. The alarm goes off and your body answers, but your head doesn’t. You move through the kitchen half a beat behind yourself, reaching for the coffee before you can string a sentence together, wondering why a full night in bed left you feeling like this.

If that sounds familiar, you are in very good company. Read the reviews under almost any popular sleep gummy and the same morning keeps showing up, in almost the same words:

Notice what people are not saying. They’re not saying they couldn’t fall asleep. Most of them fell asleep fine. They’re saying they woke up feeling knocked-out instead of rested — sluggish and foggy well into mid-morning, a grogginess that (in one reviewer’s words) “literally lasts all day.” One person summed up the whole experience in a single line: “I stopped taking melatonin because I couldn’t function the next day.”

If you’ve been quietly blaming yourself — telling yourself you’re just bad at sleep, or that this is what being tired in your forties feels like — it may be worth considering a different explanation.

You’re probably not bad at sleep. You may have just been handed the wrong dose.

Here’s the part almost nobody stops to check. Walk down the sleep aisle and look at the numbers on the bottles: 10 milligrams. 12 milligrams. Sometimes more. The whole category has been quietly racing upward, on the assumption that if a little melatonin helps you drift off, a lot must knock you out cold.

But melatonin isn’t a foreign substance you’re topping up. Your own body makes it every night — and it makes it in tiny amounts, a fraction of a single milligram. A 10mg gummy is many times more than your body would ever release on its own.

A megadose does not automatically mean deeper sleep. And for a lot of people, all that extra melatonin doesn’t neatly clock out when the alarm rings — it can linger into the morning as exactly the heavy, foggy feeling they’re describing. Think of it less like a light switch and more like a dimmer that someone cranked all the way up and then left on too long. That may be the fog. Not you.^*

And there’s a second problem: the number on the label isn’t always real.

In 2023, researchers publishing in JAMA bought 25 melatonin gummy products off the shelf and tested what was actually inside them.

Sit with that for a second. If you’ve been taking a gummy every night, there’s a real chance you don’t actually know how much melatonin you’ve been swallowing. You could be getting far more than the label claims — which would help explain a morning fog you can’t shake — or, in at least one case in that study, essentially none.

Either way, the honest takeaway is the same: the dose you can’t verify is a dose you can’t trust.

What an honest dose looks like

This is the gap we built Vyne Sleep Formula to close. It goes the opposite direction from the megadose shelf, and it’s built on a simple, almost old-fashioned idea: tell people exactly what’s in it, and don’t use more than makes sense.

Instead of a 10mg hit of melatonin, Vyne uses a low, honest 2mg — closer to the neighborhood your body works in — alongside six more calming ingredients: botanicals like valerian, chamomile, lemon balm and passion flower, plus GABA and L-tryptophan, that help you wind down rather than override you. It’s designed to support relaxing, restful sleep by helping you ease into the evening.^*

Think of it less like a switch that slams you off, and more like slowly dimming the lights.

To be clear about what we’re claiming and what we’re not: 2mg isn’t a magic number, and we’re not telling you it “works better” than a bigger dose. We’re telling you it’s an honest one — a sensible, readable amount, rather than the biggest number the shelf will allow.^*

Every milligram. Printed where you can read it.

No proprietary blend. No “sleep complex” that hides the real doses behind one total. Seven active ingredients, each one individually dosed and disclosed — the whole point is that you never have to wonder:

That transparency is the product. In a category where 88% of tested gummies didn’t match their own labels, a formula you can actually read, line by line, is the whole idea.