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The Healf Source
The Best Supplements For Sleep (That Actually Work)
From magnesium and adaptogens to herbal nightly tonics, these supps will guarantee a better sleep score.
Written by: Samantha Nice
Written on: February 4, 2026
Sleep is the ultimate wellbeing hack. Get this right, and everything else—from energy and focus to mood and recovery—starts to fall into place. It’s why so many of us pay attention not only to how long we sleep, but how well we’re actually resting each night.
Often, truly restorative sleep can feel frustratingly out of reach. Busy minds, long days, late screens, travel, and stress add up. And while lifestyle matters, sometimes your body needs a little extra support to fully switch off. That’s where sleep supplements come in. These aren’t quick fixes or knock-you-out formulas. They’re science-backed tools that work with your body to encourage deeper, more consistent rest… the kind that shows up in how you feel and in those morning sleep scores we’re all desperately aiming to improve.
At Healf, we’ve curated a list of the best sleep supplements available in the UK, where each is chosen with intention for its quality, expert formulation, and role in supporting sleep. Whether you’re working towards more restorative sleep, struggling to wind down, or waking up feeling groggy, these supps can do it all.
The best supplements for sleep (UK)
Sleep certainly isn’t one-size-fits-all. That’s why the best supplements for sleep don’t all do the same thing, they support different parts of the sleep process, depending on what your body actually needs.
The goal here isn’t sedation or forcing sleep. It’s gentle support with expert-led and science-backed formulas that help the nervous system downshift, encourage relaxation and make restorative rest feel easier.
At a glance, here are our top Healf-approved picks:
For winding down at night: APE Nutrition Dusk, Momentous Sleep, Anima Mundi Relax Tonic
For staying asleep: BiOptimizers Sleep Breakthrough
For stress-related sleep issues: Fushi Ashwagandha, Arrae Calm Alchemy
For disrupted routines (or if you’re travelling): Arrae Calm Alchemy, Momentous Magnesium L-Threonate
For deep, restorative sleep: BiOptimizers Magnesium Breakthrough, Momentous Magnesium L-Threonate
How supplements can support better sleep
Sleep is regulated by a delicate balance between the nervous system, hormones and your circadian rhythm. When these systems are in sync, sleep tends to come more easily. When they’re not… rest can start to feel pretty elusive.
Stress and overstimulation are by far some of the most common disruptors. A busy nervous system doesn’t switch off on command and that’s where targeted support can help. Rather than acting as sleep aids, a well-chosen supplement can work wonders for helping to support feelings of calm and balance which are ultimately the optimal conditions your body needs to actually rest.
The real trick? Matching the supplement to the problem. When you understand why sleep is difficult, choosing the right support becomes far more intuitive and far more effective.
Best for: racing thoughts and mental overactivity at bedtime
Magnesium is one of the most researched minerals for sleep, and its benefits depend on how effectively it supports the nervous system. Momentous Magnesium L-Threonate uses Magtein®, a patented form of magnesium shown to cross the blood–brain barrier and increase magnesium levels in the brain which is a key factor in supporting cognitive calm and nervous system regulation. Rather than acting as a sedative, this form of magnesium helps create the conditions for sleep by supporting psychological balance and reducing mental noise. It also helps to reduce tiredness and fatigue, making it a strong option when sleep struggles start in the mind, not the body.
Key ingredient: Magnesium L-threonate
Best for: creating a calm evening ritual that supports sleep over time
Dusk is designed for the transition from day to night when stimulation softens and the nervous system begins to downshift. This bedtime blend features dual-extracted Reishi and Chaga mushrooms, both traditionally used to support calm, balance and restoration.
Reishi has a long history of use in evening rituals and is now supported by research showing Ganoderma lucidum extracts (the botanical name for Reishi) extracts can help promote sleep and support sleep quality by influencing nervous system pathways. Chaga complements this with its rich botanical profile, supporting overall resilience as you wind down. Rather than forcing sleep, this helps create the conditions for rest making it ideal for nightly routines that prioritise calm and long-term sleep support. Wild-crafted and organically sourced, this is a clean and intentional way to support better evenings.
Key ingredients: Reishi mushroom, Chaga mushroom
Best for: settling your nervous system when you want calm without heaviness
Momentous Sleep combines magnesium L-threonate with L-theanine and apigenin… a trio chosen to help your body and mind ease into rest. Magnesium L-threonate supports nervous system balance and psychological calm, while L-theanine, a naturally occurring amino acid, has been shown in research to help promote relaxation and support sleep quality by influencing calming brain activity. Apigenin, a flavonoid found in chamomile and other botanicals, adds a gentle botanical complement. Together, they help you transition into the evening with a sense of calm and readiness for sleep.
Key ingredients: Magnesium L-threonate, L-theanine, apigenin
Best for: full-body magnesium support when sleep feels physically unsettled
Magnesium Breakthrough brings together seven complementary forms of magnesium to support nervous system function - a key driver of how easily the body can relax and transition into sleep. Research suggests magnesium intake can support nervous system balance, relaxation and subjective sleep quality, particularly when levels are sufficient and well absorbed. By combining multiple forms, this formula is designed to improve how magnesium is absorbed and utilised across the body, supporting muscles, psychological balance and energy metabolism as the day winds down. With added manganese for connective tissue and cellular protection, it’s a full-spectrum option that complements a consistent evening routine.
Key ingredients: Magnesium (bisglycinate, citrate, taurate, oxide, malate, phosphate, ascorbate), manganese
Best for: a slow, sensory wind-down when you want calm to feel intentional
Relax Tonic welcomes a super soothing blend of botanicals traditionally used to support relaxation. Lemon balm, passionflower and chamomile have long been associated with feelings of calm, and research suggests lemon balm in particular may support nervous system relaxation and improve sleep quality, especially when stress or restlessness are at play.
Ashwagandha and lavender add a grounding note, helping ease tension without forcing sleep. Taken as a tonic or night cap, make this one your go-to for a slower pace.
Key ingredients: Lemon balm, passionflower, chamomile, ashwagandha, lavender
Best for: stress-driven sleep disruption and elevated cortisol
Ashwagandha is an Ayurvedic hero, traditionally used to again support balance when the nervous system feels under pressure. Research suggests ashwagandha root may help lower stress and cortisol levels while supporting sleep quality, particularly in those experiencing stress-related sleep disruption. These capsules contain pure, organic ashwagandha root, freshly ground and ethically sourced to preserve potency. Rather than acting as a sleep aid, it works upstream to help calm the stress response so you settle more naturally into rest.
Key ingredient: Ashwagandha root
Best for: maintaining a calmer baseline throughout the day that carries into sleep
Calm Alchemy works quietly in the background… day or night. It pairs magnesium bisglycinate with L-theanine, an amino acid found in green tea. Research suggests L-theanine may promote relaxation and improve sleep quality by increasing calming alpha brain wave activity, helping the mind settle without sedation. Inositol and passionflower add a soft botanical layer, making this an easy daily ritual for supporting emotional balance that naturally carries into better sleep.
Key ingredients: Magnesium bisglycinate, L-theanine, inositol, passionflower
Best for: sleep issues linked to mineral or micronutrient imbalance
Sleep Breakthrough is built around essential minerals and vitamins that support the nervous system, muscle function and psychological balance which are all key foundations for consistent, restorative sleep. Alongside magnesium and vitamin B6, this includes zinc, potassium, and calcium to support overnight recovery and energy regulation.
Research suggests zinc intake may support sleep quality and reduce sleep onset time, particularly when deficiency or imbalance is present. Rather than acting as a calming aid, this blend supports sleep by addressing underlying micronutrient needs, making it a smart addition to an evening routine focused on long-term sleep quality.
Key ingredients: Magnesium, vitamin B6, zinc, potassium, calcium
Sleep is the foundation
The best supplements for sleep are powerful tools, but they work best as part of a bigger picture. Better sleep is shaped by what you do consistently… how you wind down, how you support your nervous system and how well your body is able to downshift at the end of the day.
Small rituals really matter. Whether it’s a targeted sleep supplement, a calming evening routine or more intentional support for stress, these steady signals help your body recognise when it’s time to rest. Over time, these really do help to support deeper, more consistent sleep and when sleep improves, everything else tends to follow.
Your questions on sleep supplements, answered
Yes, when chosen intentionally. Supplements work best when they support the systems involved in sleep, like the nervous system and circadian rhythm, rather than forcing sedation. Matching the supplement to why sleep feels difficult is what makes the difference.
There’s no single best option. Magnesium, calming amino acids, adaptogens and botanicals all support sleep in different ways. The most effective sleep supplements are the ones that address your specific sleep challenge… whether that’s stress, a busy mind or trouble staying asleep.
Many people use sleep supplements as part of a consistent evening routine. That said, it’s always worth paying attention to how your body responds and adjusting accordingly. Sleep is personal and support should feel sustainable rather than heavy.
The right supplements shouldn’t. Well-formulated sleep support focuses on calm and balance, not next-day fog. If grogginess is an issue, it’s often a sign the supplement isn’t the right fit.
Timing depends on the formula. Some are best taken earlier in the evening to support wind-down, while others fit closer to bedtime. Building a gentle routine and giving your body time to respond is key. Always check what the brand suggests.
Sleep support works best when it feels intentional, not overwhelming.
This article is for informational purposes only, even if and regardless of whether it features the advice of physicians and medical practitioners. This article is not, nor is it intended to be, a substitute for professional medical advice, diagnosis, or treatment and should never be relied upon for specific medical advice. The views expressed in this article are the views of the expert and do not necessarily represent the views of Healf
Samantha Nice is a seasoned wellness writer with over a decade of experience crafting content for a diverse range of global brands. A passionate advocate for holistic wellbeing, she brings a particular focus to supplements, women’s health, strength training, and running. Samantha is a proud member of the Healf editorial team, where she merges her love for storytelling with industry insights and science-backed evidence.
An avid WHOOP wearer, keen runner (with a sub 1:30 half marathon) hot yoga enthusiast and regular gym goer, Samantha lives and breathes the wellness lifestyle she writes about. With a solid black book of trusted contacts (including some of the industry’s leading experts) she’s committed to creating accessible, well-informed content that empowers and inspires Healf readers.
