Boiled banana water for sleep
You boil a banana, drink the water, and sleep like a baby. That's the claim. I make banana drinks for a living and I still think the claim is oversold — here's the whole picture.
Boiled banana water is banana tea: a banana, sometimes with its peel, simmered in water for a few minutes and strained. It contains small amounts of magnesium, potassium and tryptophan, all of which have some connection to sleep.
The research behind it is very thin. The Sleep Foundation's own assessment is that "little research has been conducted on banana tea," and nobody knows how much of those nutrients survives boiling or crosses into the water. The amounts involved are small to begin with — a medium banana has roughly 32 mg of magnesium and about 11 mg of tryptophan.
It's cheap, it's harmless for most people, and a warm drink an hour before bed is a decent wind-down ritual on its own. Try it on those terms and it might help. Expect a sedative and you'll be disappointed.
How to make it
Two versions. The peel version is the one in most of the videos, because the peel carries more magnesium than the fruit does.
With the peel
- Wash the banana under running water and scrub the skin. You're about to drink what comes off it, so this step isn't optional — use an organic banana if you can, since peels are where residue sits.
- Cut off both ends. Leave the peel on.
- Drop it whole into a pot with about 3 cups of water.
- Simmer 5 to 10 minutes. The water turns pale gold and the peel darkens.
- Strain into a mug. Cinnamon or a little honey if you want it; both are optional.
- Drink it warm, roughly an hour before bed.
Without the peel
- Peel the banana and cut it into three or four pieces.
- Simmer in 3 cups of water for 3 to 5 minutes.
- Strain and drink warm.
Milder, sweeter, less of the vegetal edge the peel gives it. If the first version tasted like a lawn to you, this is the one to try.
Don't throw out the banana. The boiled fruit is still perfectly good — mash it into porridge or freeze it for baking. Making a drink that generates food waste would be a strange thing for us to recommend.
What's actually in the cup
Three nutrients do the work in this theory, and each one has a gap in it.
Magnesium
Magnesium is involved in muscle relaxation and nerve signalling, and low magnesium status is associated with poor sleep. Supplement trials in older adults with insomnia have shown improvement. A medium banana carries about 32 mg, which is 8 to 10 percent of a day's intake, and the peel has more. How much makes it into the water over ten minutes of simmering is not something anyone has measured properly.
Tryptophan
Tryptophan is the amino acid the body converts to serotonin and then to melatonin. A medium banana contains roughly 11 mg. For scale, the studies that show tryptophan shortening the time it takes to fall asleep generally use doses in the gram range. The banana is short by a factor of several hundred.
Potassium
Potassium has been linked to sleep quality, particularly in women, and adequate intake may reduce night-time muscle cramps that wake people up. A banana covers 12 to 16 percent of a day's potassium. That's a real contribution to your overall intake, and a weak explanation for falling asleep faster tonight.
So does it work?
My honest read: probably not through the mechanism people think, and possibly through a different one that still counts.
The nutrient story doesn't survive arithmetic. The quantities are too small and the transfer into hot water is unquantified. If banana tea reliably sedated people, 11 mg of tryptophan is not how.
What it does have going for it is the ritual. Making a warm drink, sitting with it, and doing that at the same time every night is a behavioural wind-down — and wind-down routines are one of the better-supported things in sleep hygiene. The banana might be incidental. The forty quiet minutes without a screen probably aren't.
That's not nothing. It's just a different claim than the one in the videos, and it's worth knowing which one you're buying into.
Is it safe?
For most people, yes. It's fruit and water.
- Wash the peel properly if you're using it. Pesticide residue concentrates on skins, and boiling doesn't remove it.
- Watch the potassium if your kidneys are compromised. Anyone managing potassium intake on medical advice should count this in.
- It's a drink before bed. A full mug of anything an hour before sleep sends some people to the bathroom at 3am, which rather defeats the purpose.
- Honey isn't for infants under twelve months, in this or anything else.
If you've had insomnia for weeks, that's worth a doctor's time rather than a banana's. Persistent sleep trouble has causes that a bedtime drink won't touch.
How this relates to what we make
It mostly doesn't, and I'd rather say so than blur the line.
Banana tea is hot water pulling a small amount out of a whole banana. Banana water is the pressed liquid of the fruit itself, made with an enzymatic process that breaks the starch down so the water inside can actually come out. Ours is cold, it's not a sleep product, and we don't make sleep claims about it.
The overlap is only that people searching for one keep finding the other. If you came here for the sleep remedy, the recipe above is the whole thing and it costs one banana.
Common questions
Does boiled banana water really help you sleep?
There's no good evidence that it does through its nutrients. Banana tea contains magnesium, potassium and tryptophan, but in small amounts, and research on the drink itself barely exists. Any benefit most likely comes from the wind-down ritual of a warm drink before bed, which is genuinely useful but isn't what the videos are claiming.
How long should you boil a banana for tea?
Five to ten minutes with the peel on, or three to five minutes if you've peeled it first. Longer doesn't extract more of anything useful and makes it taste increasingly like boiled vegetable.
Should you boil the banana with the peel?
The peel holds more magnesium than the fruit, so most recipes keep it on. Wash it thoroughly first, and use organic if you can, because residue sits on skins and boiling won't remove it.
When should you drink banana tea?
About an hour before bed, warm. Earlier than that and the ritual effect is lost; much later and you may be up in the night for reasons that have nothing to do with sleep quality.
What does boiled banana water taste like?
Faintly sweet and quite mild, a bit like weak pear tea. With the peel it picks up a green, vegetal note that some people dislike immediately. Cinnamon covers it well.
Is boiled banana water the same as banana water?
No. Boiled banana water is a home-made tea, steeped from a whole banana. Commercial banana water is the pressed liquid of the fruit, produced with an enzymatic process that breaks down the starch. Different drinks, different processes, different amounts of banana in the glass.
Can you drink banana tea every night?
For most healthy adults, yes. It's a banana and water. If you manage potassium intake for kidney reasons, count it in like any other source.
We're making the cold kind.
Ba's Nanas is 100% banana water from a family farm, pressed rather than steeped. It isn't a sleep drink and we won't pretend otherwise. Presale opens later this year.
One short update a week, at most.
Sources
- Sleep Foundation, Banana tea: recipe and benefits for sleep — the source of the "little research has been conducted" assessment, and of the per-banana tryptophan, magnesium and potassium figures.
- USDA FoodData Central, raw banana nutrient profile.
- National Institutes of Health, Office of Dietary Supplements, magnesium fact sheet.
This page is general information, not medical advice. Persistent insomnia is worth discussing with a doctor.