Pre-order · selling fast · shipping from mid November
Evening Ritual - Cacao Bedtime Drink
Eight precisely-dosed actives including magnesium, saffron, L-theanine, lemon balm and chamomile, glycine, zinc and vit B6.
11.2g · One sachet per night · An hour before bed
Free UK delivery on every pack. One price applies per order; discounts don't combine.
30-day First Pack Promise · Cancel any time · Secure checkout
- First order
- £44.25
- Then every 4 weeks
- £53.10
- UK delivery
- Free
- Today
Shipping from mid November. Your following payment is taken only when your next pack is due.
- Free UK deliveryOn orders over £35 & on Subscriptions
- Cancel anytimeNo minimum term
- Every dose on the labelNo proprietary blends
- Natural onlyNo synthetics, ever
Cancel whenever you like. One button, in your account, any time. We'd rather you stayed because it works than because leaving was hard.
Why take it
Why take it
Serune is a nightly ritual to mark the end of the day. Dissolve one sachet in hot milk of your choosing, or hot water, about an hour before bed for a velvety, deep, bittersweet cacao drink you will look forward to every evening.
You do not realise how much sleep matters until you start losing it. For months, or maybe years, you have tried everything to fix it. The intentional wind-down, the magnesium pills, the herbal teas. The ritual was right, but the formulation was not specific enough.
Serune is the ritual designed for the full architecture of the night and the day that follows. Eight actives, each one named, measured and dosed, held to the same level batch after batch. Made with real cacao and a subtle hint of Madagascar vanilla and Montmorency tart cherry.
Because it was never just about the sleep. It is about the next day, and feeling like yourself in it.
What the nutrients do:
- Magnesium and vitamin B6 contribute to the reduction of tiredness and fatigue.
- Magnesium contributes to normal psychological function.
- Zinc contributes to normal cognitive function.
One sachet provides 150 mg magnesium (40% NRV), 2.8 mg vitamin B6 (200% NRV) and 10 mg zinc (100% NRV).
One sachet, every night, at the same hour.
A ritual that you’ll look forward to every night.
How to consume
How to consume
- One sachet, mixed into a smooth paste with a splash of hot milk or water
- Gradually top up with warm milk (200ml), stirring until silky
- Enjoy the first sip to signal a restful night ahead
Who it's for
Who it's for
For anyone whose evenings have stopped switching off: the wind-down that never quite lands, the magnesium tablets and herbal teas that did a bit but not enough. Serune is for people who want one deliberate ritual at the end of the day, with every ingredient named and dosed, rather than another pill.
And for the 3am wakers. You fall asleep fine, then you are wide awake in the dark with a busy head and the clock in view. Serune is built for the whole night, not only the first hour of it: the glycine, magnesium and botanicals are dosed for the small hours as much as for bedtime.
Taste
Taste
A velvety, deep, bittersweet cacao drink with a subtle hint of Madagascar vanilla and Montmorency tart cherry. Rich rather than sweet, closer to a good dark hot chocolate than a supplement shake.
It mixes properly. A splash of hot milk or water to a paste, top up, stir: no grit at the bottom of the cup and no clumps, which is the complaint we hear most about other sleep powders.
Early testers took it with dairy milk, oat milk and hot water. Oat milk was the favourite for a creamier cup; hot water gives a lighter, darker drink.
Quality
Quality
Made in the UK in a BRCGS AA facility, the standard the supermarkets ask for. Every ingredient is tested and assessed, every batch, with a full Certificate of Analysis per ingredient.
Eight actives, each one named, measured and dosed on the label. No proprietary blends, no hidden amounts. The botanicals are standardised extracts, so every batch delivers the same strength rather than a variable pinch of loose herb.
One sachet, precisely dosed at researched levels. No spoon, no guessing, no mess. And it mixes properly: no grit, no clumps.
Made with real cacao. Natural only, no synthetics. Vegan, gluten-free, dairy-free, and free from all 14 declarable allergens.
Ingredients & Nutritionals
Ingredients & Nutritionals
Actives
- Saffron (Safr’Inside™) · 30mg
- Glycine · 3,000mg
- Magnesium · 150mg elemental
- L-Theanine · 200mg
- Lemon balm · 400mg
- Chamomile · 400mg
- Vitamin B6 · 2.8mg
- Zinc · 10mg elemental
Flavour system
Made with real cacao and a subtle hint of Madagascar vanilla and Montmorency tart cherry.
Nutritional values
High in magnesium, zinc and vitamin B6.
High in fibre.
High in protein.
Cautionary advice: If pregnant or breastfeeding please consult with your GP or midwife. If you are taking medication or under medical supervision, consult your doctor before taking any food supplement. One sachet per day. Do not exceed the recommended daily dose. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Keep out of the reach of young children. Store in a cool, dry place out of direct sunlight.
Allergens
Allergens
Contains none of the 14 declarable allergens. Gluten-free. Dairy free. Vegan.
For a question about a specific ingredient, email support@serune.co.uk.
1 Magnesium contributes to normal psychological function and to the reduction of tiredness and fatigue.
2 Vitamin B6 contributes to the reduction of tiredness and fatigue.
3 Zinc contributes to normal cognitive function.
Why choose Serune
What the nutrients do
Your 30-day First Pack Promise
Serune is a 28-night ritual, and we would rather you gave it the full cycle than judged it on a bad Tuesday. If your first pack is not right for you, tell us within 30 days of it arriving and we refund what you paid for it.
Nothing to send back, nothing to explain. Email support@serune.co.uk with your order number and we do the rest.
- Every dose on the labelEight named actives, each one measured. No proprietary blends.
- Cancel any timeOne button in your account. No minimum term, no phone call.
- Free UK deliveryOn every subscription and on orders over £35.
A nightly ritual redefined.
We spent a long time on this formula, because we are committed to designing something built around the architecture of a full night, and the day that follows it.
Instead of sprinkling a pinch of a long list of ingredients, we wanted each one to count.
Every dose is clearly listed, so you’ll know exactly what’s stirred into your evening ritual, and exactly how much. After everything you’ve tried, here’s a formula you can finally scrutinise for yourself.
Eight actives, every dose on the label
Serune is high in magnesium and vitamin B6, which contributes to normal psychological function and to the reduction of tiredness and fatigue¹ ². It’s also high in zinc, which contributes to normal cognitive function.³ Alongside them are four botanicals and amino acids, each named and each dosed at the level used in the research.
Natural ingredients
Precisely-dosed premium plant botanicals, amino acids and minerals that are scientifically backed to work from within, delivered in a luxurious cacao ritual you’ll look forward to.
No added melatonin, hormones, or sedatives
We left melatonin out on purpose. Serune is not designed to knock you out, and it contains nothing that would. What it does contain is magnesium and vitamin B6¹ ², both of which contribute to the reduction of tiredness and fatigue, in a form you drink rather than swallow.
A consistent nightly ritual
One sachet each evening, for 28 nights. We’re not interested in quick fixes. This is a habit you build over time, the way most things worth doing actually work.
What’s inside matters
Eight actives. Named, precisely dosed, at their researched level. No proprietary blends, no hidden amounts. Every dose is on the label, the whole persuasion is the specificity.
Saffron (Safr'Inside™) · 30mg extract, standardised to ≥3% crocins
Saffron (Safr'Inside™) · 30mg extract, standardised to ≥3% crocins
Our signature, front-line ingredient, precisely dosed at 30mg — a branded, characterised extract.
Glycine · 3,000mg
Glycine · 3,000mg
A fundamental amino acid, at a full 3,000mg — a critical structural building block within your body's natural nighttime environment, working in synergy with our magnesium stack.
Magnesium · 150mg elemental (as fully reacted, chelated magnesium bisglycinate)
Magnesium · 150mg elemental (as fully reacted, chelated magnesium bisglycinate)
An essential mineral in a highly bioavailable bisglycinate form for superior absorption, so it actually reaches your system instead of sitting heavily in your stomach. Contributes to normal psychological function and to the reduction of tiredness and fatigue.
L-Theanine · 200mg (from green tea extract)
L-Theanine · 200mg (from green tea extract)
A targeted, non-drowsy amino acid naturally found in green tea — never the synthetic version — to support a calm, composed transition into evening rest.
Lemon balm · 400mg leaf extract, standardised to 7% rosmarinic acid
Lemon balm · 400mg leaf extract, standardised to 7% rosmarinic acid
A leaf extract of the lemon balm plant (Melissa officinalis), standardised to its rosmarinic acid, so every batch delivers the same 400mg at the same strength — not a variable pinch of loose herb.
Chamomile · 400mg extract, standardised to 3% total apigenins
Chamomile · 400mg extract, standardised to 3% total apigenins
A refined, concentrated herbal flower extract chosen for its naturally occurring apigenin, widely used to quieten central nervous system activity and soothe sensory noise — helping to wind down a racing mind.
Vitamin B6 · 2.8mg (as P-5-P)
Vitamin B6 · 2.8mg (as P-5-P)
Included in its active, co-enzymated form for immediate cellular utilisation. Contributes to the regulation of hormonal activity and normal psychological function.
Zinc · 10mg elemental (as zinc citrate)
Zinc · 10mg elemental (as zinc citrate)
A foundational dietary mineral supporting your system's overnight maintenance cycle, contributing to normal cognitive function.
Three steps to a Serune evening
One sachet, about an hour before bed.
One sachet
Mix it into a smooth paste with a splash of hot milk or water.
Top up and stir
Gradually add warm milk (200ml), stirring until silky.
Sip, an hour before bed
The first sip signals a restful night ahead. Same hour, every night.
£125+ of premium ingredients in every 28-night ritual
Buy the actives separately, at the doses in one sachet, and this is roughly what 28 nights costs before delivery. Serune puts all of it in a cup of a velvety, deep, bittersweet cacao drink you will look forward to every evening.
| Bought separately | For 28 nights |
|---|---|
| Saffron extract | £16.79 |
| Glycine | £9.90 |
| Magnesium bisglycinate | £11.95 |
| L-theanine | £16.50 |
| Lemon balm extract | £11.99 |
| Chamomile extract | £12.99 |
| Vitamin B6 | £10.95 |
| Zinc | £6.50 |
| Montmorency tart cherry | £27.49 |
| The ritual: a moment's peace, time to yourself, the wind-down | Priceless |
| Total, bought separately | £125.06 |
| One 28-night pack of Serune | £59.00 |
How this is worked out: each line is the price of a 28-night supply of that ingredient bought on its own from a UK retailer, at or as near as sold to the dose in one Serune sachet, checked in September 2026. Retail prices move, so the total is rounded and will drift. One 28-night pack of Serune is £59, or £44.25 on subscription.
How Serune compares
More ingredients are not better. Standardised quality ingredients are. Scientifically researched doses are.
| Serune | Serene+ | Ancient + Brave True Nightcap | Beam Dream | |
|---|---|---|---|---|
| Format | Hot cacao drink, precisely dosed, one sachet a night | One capsule a day | Lemon and ginger powder, 6g in water | Hot cocoa powder, one scoop |
| Actives per serving | 8 | 8: saffron, lavender, melon extract, magnesium, four B vitamins | 7: glycine, magnesium, zinc, vitamin C, choline, inositol, ginger | 5: melatonin, magnesium, L-theanine, reishi, apigenin |
| Saffron | 30mg Safr'Inside extract | 28mg Affron extract | None | None |
| Glycine | 3,000mg | None | 2,000mg | None |
| Magnesium | 150mg, bisglycinate | 56mg, marine | 130mg, citrate | 60mg citrate on the capsule label; powder dose not published for the UK |
| L-theanine | 200mg, from green tea | None | None | Included; dose not shown on the UK listing |
| Lemon balm and chamomile | 400mg of each, standardised extracts | None | None | None (50mg isolated apigenin instead) |
| Melatonin | None | None | None | 3mg in the US formula; melatonin is prescription-only in the UK |
| Every dose on the label | Yes | Yes | Yes, on the brand's own site | Sold as a proprietary blend on UK listings |
| Guarantee | 30-day First Pack Promise, nothing to send back | 100% satisfaction guarantee | 30-day guarantee on its US site; UK terms not checked | None stated |
| UK delivery | Free on subscriptions and orders over £35 | Free on UK subscriptions | Through UK stockists | Import only |
| Made in | The UK, in a BRCGS AA facility | Not stated | Not stated | Not stated |
| Batch testing | Every ingredient tested and assessed, every batch, with a Certificate of Analysis | Not stated | Not stated | Not stated |
| A ritual, not a pill | Yes: the moment's peace, the time to yourself, the wind-down | No | Yes | No |
Competitor information taken from their own websites and UK retailer listings on 27 September 2026. Where a figure is not published we say so rather than guess. Prices change, so check before quoting them.
Your questions, answered simply and clearly.
Why not just take a magnesium tablet?
Because a tablet is one ingredient and Serune is eight. Each sachet contains 150mg of elemental magnesium as fully reacted, chelated magnesium bisglycinate, whereas many high-street tablets use magnesium oxide. Alongside it are Safr’Inside™ saffron, glycine, L-theanine, lemon balm, chamomile, vitamin B6 and zinc, each at the dose listed on the pack. And it is designed as a warm drink you make each evening feel rested, not a tablet you take and forget.
How is it different from chamomile tea?
Same evening warm beverage, but with very different contents. How much a tea bag gives you depends on the flowers, the water and how long you leave it. Serune contains 400mg of chamomile extract in every sachet, standardised to 3% total apigenins, alongside seven other actives at named doses. So you exactly know what you are getting.
How long before I know if it is for me?
Every sachet carries the full dose from the first night. What takes time is the habit. That is why we suggest three packs before you decide: long enough for the ritual to settle, and long enough for you to judge it honestly.
Why does it cost what it does?
Because of what is intentionally included in each sachet. Eight actives, each at a named dose, with the botanicals as standardised extracts, so every sachet carries the same measured amount as the last. Every batch of material that goes into it comes with a Certificate of Analysis, and it is made in a BRCGS AA-graded facility: the food safety standard UK supermarkets require of their suppliers, at its top grade.
Can I take it with medication, or while pregnant?
Serune is not recommended during pregnancy or breastfeeding, and is not suitable for children. If you take any medication or are under medical supervision, speak to your doctor or pharmacist before taking any food supplement. To check a specific ingredient, email us, and we will answer directly.
Is there melatonin in it?
No added melatonin and no added hormones. That was a deliberate decision, not an omission.
How much caffeine is in it?
Very little. Cacao is in the formula for flavour, not as an active ingredient, in a small amount, so you get the rich, velvety but not-too-sweet taste without much of what comes with it. Cacao naturally contains theobromine and a trace of caffeine, and we do not add any on top of that. If you are sensitive to either, email us and we will send you the exact figures.
How do I store it, and how long does it keep?
Somewhere cool and dry, out of direct sunlight. The best-before date is printed on every pack.
When will my order arrive?
Pre-orders are dispatched from mid November 2026. After that, UK orders placed before 12 PM on a working day are dispatched the same day and arrive in 2–4 working days, with free tracked delivery, unless you decide to upgrade your delivery.
Why am I paying now for something that ships in November?
Because it is currently open only for pre-order as our first batch is still in the process of production. You are charged today (to lock in your pre-order pricing), we’ll dispatch from mid November onwards, and you can cancel any time before it ships for a full refund.
Can I cancel a subscription?
Yes, at any time, in your account, in one click. No minimum term, no notice period, no phone call, no hidden charges. And if you have any further concerns, you can just reach out to us.
What if it is not for me?
Tell us within 30 days of your first pack arriving, and we will refund it. You keep the remainder of the pack. You won’t need to send anything back or fill in long forms to justify.
Where can I read the research behind the doses?
On the science page: every active, the amount in a sachet, the form we use and why, the published studies each dose was set against, and every authorised claim in full. https://www.serune.co.uk/pages/science
What exactly is in a sachet?
Eight actives in every sachet: saffron (Safr'Inside™) 30 mg extract standardised to ≥3% crocins; glycine 3,000 mg; magnesium 150 mg elemental as fully reacted, chelated magnesium bisglycinate; L-theanine 200 mg from green tea extract; lemon balm 400 mg leaf extract standardised to 7% rosmarinic acid; chamomile 400 mg extract standardised to 3% total apigenins; vitamin B6 2.8 mg as P-5-P; and zinc 10 mg elemental as zinc citrate, in a real cacao base with a Montmorency tart cherry note and Madagascar vanilla. There is no melatonin, no ashwagandha and no proprietary blend: every dose is on the label.
Is the saffron the same as in the studies?
Yes. Serune uses Safr'Inside™, the extract used in the two 2025 saffron sleep trials (Sleep Medicine: X, and the University of East Anglia), at the dose those trials used: 30 mg, which is the amount in one sachet. What the trials looked at, in the people they looked at, is on the science page.
What kind of magnesium is in Serune, and how much?
150 mg of elemental magnesium per sachet, as fully reacted, chelated magnesium bisglycinate. Elemental is the figure that matters: 150 mg of magnesium comes from roughly 1,150 mg of bisglycinate. That is 40% of the UK Nutrient Reference Value, so Serune is high in magnesium, and it is under the 250 mg a day supplemental ceiling. Magnesium contributes to a reduction of tiredness and fatigue and to normal psychological function.
Is the L-theanine natural?
Yes. Serune's L-theanine is extracted from green tea leaf (Camellia sinensis), the form with a history of use as a food. L-theanine made by chemical synthesis or fermentation is treated as a novel food and is currently going through authorisation; Serune does not use it.
What does "dosed to the research" mean?
For each active we found the form the human studies used and the amount they used, and matched it where the sachet allows. Glycine is 3 g because that is the dose in every human sleep study of glycine; saffron is 30 mg because that is the dose in the Safr'Inside™ trials; L-theanine is 200 mg because that is the dose in most of the human research; chamomile is 400 mg because that is the dose in the four-week sleep-quality trial. Where a trial used more than we do, the science page says so.
Which health claims can Serune legally make?
UK law only lets a food supplement make health claims that have been authorised. Three of Serune's eight actives hold authorised claims: magnesium, vitamin B6 and zinc, including "magnesium contributes to a reduction of tiredness and fatigue", "vitamin B6 contributes to the reduction of tiredness and fatigue" and "zinc contributes to normal cognitive function". Saffron, glycine, L-theanine, lemon balm and chamomile carry no authorised claim; we include them at researched doses and print exactly how much of each is in every sachet. The full list of authorised wordings is on the science page.
Is Serune tested?
Serune is made in the UK in a BRCGS AA-certified facility, the food safety standard the supermarkets audit against, at its highest grade. Every batch of material comes with a Certificate of Analysis, so the standardisation on the label is measured, not assumed. Serune contains none of the 14 declarable allergens and is gluten-free.
Why hot milk?
Because it makes the better drink and it is the ritual most people already keep. Serune makes no claim for milk, and hot water works too.
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