Sleep
Sleep supplements with magnesium, L-theanine, glycine and calming herbs like valerian and lemon balm, in capsules, powders and drops. We explain which ingredient suits which kind of restless night, and why melatonin is missing.Read more →
Filters
Availability
Brand
Form
Diet
Goal
Price
How to choose a natural sleep supplement
Sleep supplements are not sedatives. They deliver nutrients and plant extracts that support your body while it winds down, which is why they sit in our MIND + SLEEP pillar rather than in the medicine cabinet. That difference matters when you compare labels. It explains why one ingredient helps a colleague and does nothing for you. Sleep is also an area where more is rarely better: a higher dose does not switch you off faster.
Melatonin is a prescription medicine in the UK
In the UK, melatonin is classed as a prescription-only medicine, not a food supplement. Shops cannot legally sell it, and parcels ordered from abroad can be stopped at customs. So you will not find melatonin here. You will find the ingredients that are allowed in European supplements: magnesium, glycine, L-theanine, vitamin B6 and calming herbs such as valerian, lemon balm, passionflower and hops. One more piece of honesty: European food law has approved no health claim that links a supplement directly to sleep. We stay inside what these ingredients are permitted to say.
Start with the kind of night you have
Most disappointing purchases come from picking a popular product instead of a fitting one. A rough guide:
- Tense muscles or restless legs: the magnesium range, because magnesium contributes to normal muscle function and to normal functioning of the nervous system.
- A head that keeps talking at midnight: L-theanine, an amino acid from tea leaves, or lemon balm.
- Weeks of built-up stress: ashwagandha, taken every day rather than only at bedtime.
- A thin intake of B vitamins: vitamin B6, which contributes to normal psychological function.
None of these act as an off switch. They make the conditions for sleep a little easier, which is a smaller promise, but a realistic one.
How we choose what goes in this collection
Form, dose and sensible combinations decide what we stock. For magnesium we prefer bisglycinate and citrate over oxide, because they are absorbed better and are gentler on the stomach. We check how much elemental magnesium a capsule really delivers, not the weight of the whole compound. We leave out formulas that hide a dozen botanicals in one blend, because you cannot see whether any of them reaches a researched amount. Every product passes our compliance team, we test products ourselves, and independent labs spot-check batches. Read how we select brands and products.
What to expect, and what not to
Most people take a capsule or a dose of calming L-theanine thirty to sixty minutes before bed. Powders suit anyone who dislikes swallowing capsules and likes a warm drink as part of the routine. Drops let you build up in small steps. Effects are usually gradual, so give a new product two to three weeks of consistent evening use before you judge it. A supplement supports the wind-down, it does not cancel out a late screen habit or a rotating shift pattern. If you have slept badly for weeks, or you snore heavily and still wake up exhausted, speak to your GP first. That is a different problem from an occasional restless night.
Frequently asked questions
What are sleep supplements and what can they realistically do?
They are food supplements with minerals, amino acids, B vitamins or plant extracts that people take in the evening. They do not sedate you and they are not sleeping tablets. They support the systems involved in winding down, so the conditions for sleep improve. European food law has approved no claim that a supplement improves sleep, so treat any product promising instant knockout results with suspicion. Realistically, they help most when your routine is already reasonably steady.
Why can I not buy melatonin in this shop?
In the UK, melatonin is classed as a prescription-only medicine rather than a food supplement. That means no shop, pharmacy or website may sell it to you without a prescription, which is different from the United States and several EU countries. Parcels posted from abroad can be seized at customs. If you think melatonin is right for you, for example after long-haul travel, your GP or a pharmacist is the correct route.
Which sleep supplement should I choose?
Start from what keeps you awake rather than from what is popular. The table gives the usual starting points in this collection.
| Ingredient | Often chosen for | Typical form |
|---|---|---|
| Magnesium bisglycinate | Tense muscles, restless legs | Capsules, powder |
| L-theanine | A busy head at bedtime | Capsules |
| Glycine | Evening routine, before bed | Powder |
| Valerian, hops | Traditional evening use | Tablets, tincture |
| Ashwagandha | Long-running stress | Capsules |
| Vitamin B6 | Psychological function | Tablets |
Herbal options such as valerian root extracts are traditional choices with no EU-approved claim, so judge them on your own experience.
When should I take it and how long until I notice anything?
Most labels suggest thirty to sixty minutes before bed. Magnesium and amino acids can be taken with a small snack if a capsule on an empty stomach feels heavy. Adaptogens such as ashwagandha are usually taken daily, morning or evening, because they build up. Be patient: expect to need two to three weeks of consistent use before you can judge the effect. If nothing changes after a month, the ingredient probably does not match your problem.
How much magnesium is sensible in the evening?
Official UK reference intakes cover the whole day, from food plus supplements, not a bedtime dose.
| Group | Daily amount |
|---|---|
| Men 19 to 64 | 300 mg |
| Women 19 to 64 | 270 mg |
| From supplements | Up to 400 mg unlikely to cause harm |
Above roughly 400 mg from supplements, loose stools are the common complaint. Many evening products therefore stay between 100 mg and 200 mg of elemental magnesium.
Source: NHSCan I combine different sleep supplements?
Combining magnesium with L-theanine or vitamin B6 is common, and many formulas already do it. Stacking several herbal products on top of each other is less sensible: you lose track of what is working and of the total amount of each extract. Start with one product, keep it for three weeks, then adjust. If you take prescription medication, are pregnant or breastfeeding, or are buying for a child, check with your GP or pharmacist first, especially with herbal extracts.
Are capsules, powders or drops better before bed?
The differences are practical rather than dramatic. Capsules are precise and travel well. Powders let you take larger amounts of magnesium or glycine in a warm drink, which many people like as a signal that the evening is ending. Drops and tinctures allow small steps and suit anyone who cannot swallow capsules, although herbal tinctures taste strong and often contain alcohol. Gummies are pleasant but usually carry lower doses per serving.
How do I check how much magnesium a capsule actually gives me?
Read the ingredients panel, not the front of the pack. A label may say 1,500 mg magnesium bisglycinate, which is the weight of the whole compound. The useful number is the elemental magnesium underneath it, often around 200 mg. Oxide carries a high percentage of elemental magnesium but is absorbed poorly, while bisglycinate and citrate carry less per gram and are absorbed better. Compare products on elemental magnesium per daily serving, then on price per serving.
