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Sleep Stack

Sleep Stack

5-HTP with L-Tryptophan + Double Magnesium · £29 together, £32 separately · free UK delivery

Regular price £29.00
Regular price Sale price £29.00
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  • 30-day guarantee
  • Same-day dispatch
  • Made in the UK
  • Wind-down — magnesium contributes to normal psychological function and to normal functioning of the nervous system
  • Tiredness — magnesium and vitamin B6 contribute to the reduction of tiredness and fatigue
  • Muscles — magnesium contributes to normal muscle function
  • Saving — £3 off the two bottles, and the order qualifies for free UK delivery

£29 together — £32 if you buy the two bottles separately. Free UK delivery.

For the nights that won't switch off — and the mornings that pay for it.

If you're lying awake with a racing mind, waking through the night, or sleeping a full eight hours and still surfacing tired, the problem usually isn't that you need to try harder to sleep. It's that the pathway your body uses to wind down isn't being given what it needs.

Sleep is the end of a chain that starts hours earlier. Your body builds serotonin during the day, then converts it overnight to signal rest. That conversion needs raw materials and the right minerals to run smoothly. This stack supports the chain from two directions rather than knocking you out — so your body does the work the way it's meant to.

What's inside

5-HTP with L-Tryptophan — 125mg griffonia seed extract and 105mg L-tryptophan, with hops flower extract, magnesium citrate, and vitamins B6 and B12. Vitamin B6 contributes to normal psychological function and to the reduction of tiredness and fatigue. 90 capsules — three months at one a day.

Double Magnesium — 376mg of magnesium per daily dose. Magnesium contributes to normal psychological function, to normal muscle function, and to the reduction of tiredness and fatigue. 60 tablets — one month at two a day.

Why these two together

5-HTP supports the production side of the pathway; magnesium supports the relaxation side. One gives your body the building block, the other helps your nervous system use it. Together they suit people whose sleep problems sit alongside daytime stress — the classic tired-but-wired pattern.

Take them in the evening, consistently, alongside the basics: a proper wind-down, less late caffeine, a dark cool room. Give it thirty days before you judge it.

No stimulants. No sedatives. No proprietary blends. Every amount is printed on the label. Backed by our 30-day money-back guarantee.


Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. Not suitable during pregnancy. If you are breastfeeding, taking medication (particularly antidepressants), or have a health condition, consult your GP before use.

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Who it's for

For the tired-but-wired: busy days, busy head at midnight.

One 5-HTP capsule and two magnesium tablets with your evening meal. The magnesium lasts a month; the 5-HTP lasts three. Give it thirty days before you judge it.

What's inside

Double Magnesium — per 2 tablets
Magnesium (hydroxide + bisglycinate)376 mg · 100% NRV
Zinc (from zinc citrate)10 mg · 100% NRV
5-HTP with L-Tryptophan — per 1 capsule
Griffonia seed extract (20% 5-HTP)125 mg
L-Tryptophan105 mg
Hop flower extract100 mg
Magnesium citrate100 mg
Vitamin B61.7 mg · 121% NRV
Vitamin B122.5 µg · 100% NRV
Full ingredient lists are on each product's own page. Both are vegan and gluten-free.
  • Vegan
  • Gluten-free
  • No stimulants
  • No sedatives
  • No proprietary blends
  • Every amount stated

Why these two together

5-HTP and L-tryptophan sit on the production side of the pathway your body uses to wind down; magnesium sits on the relaxation side. B6 and B12 contribute to normal psychological function, and magnesium to normal functioning of the nervous system. Two bottles, every amount on the label, £3 less than buying them separately.

How we compare

Sleep StackBought separatelyTypical sleep blend
Price£29£32£20–35
UK deliveryFreeFree (over £30)Varies
Elemental magnesium / day376mg376mgOften unstated
Amounts on the labelAll of themAll of themOften a blend
Sedatives or melatoninNoneNoneSometimes
Money-back guarantee30 days30 daysVaries

What to expect

Week 1

Both with your evening meal, same time each night. Sort the basics too: less late caffeine, a dark cool room.

Weeks 2–3

The routine's established. Magnesium contributes to the reduction of tiredness and fatigue — this is when most people notice whether it's doing something.

Week 4

Judge it. Not for you? Use the guarantee.

A note from Gareth, founder

I built Octi in Edinburgh because I was tired of guessing what was actually in the capsule. Every amount is on the label. If it's not right for you, email me and I'll sort it.

Questions

What exactly arrives?
Two bottles: 5-HTP with L-Tryptophan (90 capsules) and Double Magnesium (60 tablets). Together they're £29; bought separately they're £32.
How do I take them?
One 5-HTP capsule and two magnesium tablets with your evening meal.
The 5-HTP lasts longer than the magnesium — what then?
Reorder Double Magnesium on its own after the first month; you'll have two months of 5-HTP left. Or set up a magnesium subscription so it arrives before you run out.
Can I take it with medication?
Speak to your GP or pharmacist first, particularly if you take antidepressants or anything that affects serotonin. Not suitable during pregnancy.
Will it knock me out?
No. There are no sedatives, no melatonin and no stimulants in either bottle.
How long before I notice anything?
Give it thirty days of daily use before you decide. If it isn't for you, use the 30-day guarantee.