Homeopathic Remedies for Insomnia & Natural Sleep Support

Insomnia is not simply “not getting eight hours”

Insomnia means regularly having difficulty falling asleep, staying asleep, waking too early or waking unrefreshed and experiencing a daytime consequence such as tiredness, irritability or poor concentration. NHS guidance distinguishes short-term insomnia from long-term insomnia lasting three months or more. ^[12]

People vary in how much sleep they need. The more useful question is whether your sleep is restorative enough for daytime functioning—not whether a wearable says you achieved a perfect number.

This adult pillar deliberately covers the overlapping master topics Insomnia, Difficulty Falling Asleep, Waking During the Night and Early-Morning Waking. Separate pages for each would largely repeat the same causes, CBT-I principles, supplement evidence and remedy differentiation. Menopause-related sleep problems remain a distinct existing guide because the hormonal context changes the treatment conversation.

Where does your night break?

For one week, do not simply write “slept badly”. Mark the point where sleep failed:

1. Before bed: sleepy, wired, worried, physically restless or not sleepy at all?
2. Sleep onset: how long until you actually fall asleep?
3. First half of the night: do noise, heat, twitching or repeated thoughts keep pulling you back awake?
4. Middle of the night: is there a recognisable 2–4 a.m. waking pattern?
5. Early morning: do you wake too early with the brain immediately “on”?
6. After waking: refreshed, foggy, anxious, irritable or completely depleted?

A sleep diary is also part of modern insomnia assessment. The European insomnia guideline recommends clinical history plus sleep questionnaires/diaries, while sleep-laboratory testing is generally reserved for suspected other sleep disorders or treatment-resistant cases rather than routine uncomplicated insomnia. ^[13]

Interactive Insomnia Remedy Finder

The remedy finder follows the point where sleep breaks—sleep onset, repeated waking, 3–4 a.m., caregiving exhaustion, warm-room wakefulness, restless legs/twitching or anticipatory thinking—before producing a remedy or focused differential.

When you cannot get to sleep because the mind is too awake

Coffea cruda – too alert, too interested, too sensitive to sleep

Coffea is the clearest source picture when insomnia is caused by excess mental activity rather than depletion alone. Thoughts rush, ideas feel unusually vivid or enjoyable, and noises, touch or other sensory impressions become disproportionately noticeable. ^[1]

Excitement can be pleasant or unpleasant: a new idea, good news, anticipation, an emotional conversation or late reading can all keep the brain “lit up”. The person may not feel deeply anxious; they simply cannot turn the brightness down.

Compare Nux vomica when the wakefulness is more irritable, business-like and sustained by stimulants/late work. Compare Passiflora when the person is overtired and gently fretful rather than mentally brilliant or exalted.

Passiflora – tired, listening to every sound, afraid sleep will not come

Passiflora is a softer sleep-onset picture. The person is genuinely weary but lies awake with repetitive everyday thoughts, hears every noise and increasingly worries that another bad night is beginning. ^[4]

Late mental work, bright light, noise, coffee, alcohol and changing sleeping environment aggravate. Quiet, darkness, reassurance and slowing down suit the overall picture.

When the body is exhausted but the nervous system still will not switch off

Scutellaria lateriflora – wired insomnia of nervous exhaustion

Scutellaria’s sleep section is one of the strongest in the complete archive. The person has often been working, worrying, caring or studying for too long and now reaches bed tired but not able to become peacefully sleepy. ^[2]

Thoughts keep circling around worries or plans. As sleep approaches, twitching, limb jerks, startle or a falling sensation can snap the person awake again. Sleep remains light and fragmented rather than deeply restorative.

Compare Zincum valerianicum when the motor restlessness is much more prominent and the legs/feet insist on movement. Compare Kali phosphoricum when the person is more mentally emptied than electrically wired.

Avena sativa – long-term depletion with loss of restorative sleep

Avena is less edgy than Scutellaria. The person feels worn down by long overwork, illness, worry or repeated sleep loss, with poor concentration, dullness and little remaining enthusiasm. Yet the depleted brain still fails to settle reliably at night. ^[7]

This is a useful recovery-stage picture when the question is no longer “why am I wired?” but “why can’t months of exhaustion turn into proper restoration?”

Kali phosphoricum – light broken sleep in nervous depletion

Kali phosphoricum also belongs to the depleted end of the spectrum: mental prostration from grief, illness, care or overwork, with poor memory, overwhelm and hypersensitivity to noise. Sleep is light, broken and unrefreshing. ^[8]

Avena is more generally worn out; Kali phosphoricum is more specifically a nerve-overload state where even conversation, noise or another responsibility feels like too much input.

When you wake around 3–4 a.m. and the working day starts in your head

Nux vomica – overwork, stimulants and the 3–4 a.m. wake-up

Nux vomica is especially relevant when insomnia is embedded in a lifestyle loop: work late → use caffeine or alcohol → eat late → sleep poorly → wake around 3–4 a.m. with thoughts or digestion → push harder the next day. ^[3]

The person is often ambitious, exacting and irritable rather than passive or anxious. Noise, light and interruption are difficult to tolerate. Morning can be the worst part of the day because the sleep obtained was neither long nor refreshing.

That pattern is also a practical clue that treating insomnia without changing the stimulant/work schedule is unlikely to hold.

When lost sleep comes from caring, watching or being awake for someone else

Cocculus indicus – night-watching and caregiver insomnia

Cocculus has a very specific cause: loss of sleep from nursing, watching, caregiving, worry about another person or repeated nights of being unable to rest when others need you. ^[5]

The person becomes drowsy yet cannot sleep properly, mentally clouded and irritable, with time feeling strange or slowed. The key is not generic “stress”; it is exhaustion from sustained vigilance and interrupted sleep.

This differentiates Cocculus from Scutellaria, where worry/overwork keeps the nervous system electrically active, and from Avena, where the depletion is broader and more chronic.

When the room, body temperature and timing are the clue

Tilia europaea – before-midnight wakefulness in warm rooms

Tilia is distinctive for restless insomnia before midnight with a hot head and cooler extremities, often with a quick soft pulse or mild palpitations. The person wants the window open and feels much less able to sleep in a warm, stuffy room. ^[6]

The mind may be crowded with thoughts but not deeply fearful. Sleep can arrive after a little gentle perspiration—for example after a warm bath/drink while the bedroom itself remains cooler.

Zincum valerianicum – crowded thoughts plus restless feet

Zincum valerianicum becomes more characteristic when insomnia is not only mental. Ideas crowd, but the feet and legs are physically restless; twitching or jerking accompanies drowsiness and sitting still becomes intolerable. A short walk in cool air can settle both mind and body. ^[9]

Because Restless Legs Syndrome already has its own IQ Naturopathy article, this remedy belongs here only when the motor restlessness is part of the insomnia picture rather than a reason to duplicate that entire condition guide.

When tomorrow keeps you awake tonight

Argentum nitricum – anticipatory insomnia

Argentum nitricum is built around a future event: exam, appointment, journey, deadline, performance or something that could go wrong tomorrow. The mind rehearses scenarios and schedules, often with palpitations, dry mouth, tremor or bowel urgency. ^[10]

Cool air and walking tend to settle the state. This is different from Coffea, where ideas themselves are brilliantly active, and from Nux vomica, where tomorrow’s workload is part of an ongoing over-driven lifestyle.

Lactuca virosa – drowsy but sleepless, startled by every stimulus

Lactuca gives a paradoxical state: the person feels drowsy, yet sleep will not happen. Thoughts crowd while the body feels heavy; the least noise or light causes a start, and sleep when obtained is brief and unrefreshing. ^[11]

A tickling cough, trembling or weak/irregular pulse can accompany in the source. Because that broader picture is less common in straightforward insomnia, Lactuca remains a narrower differential rather than a routine first choice.

For chronic insomnia, sleep hygiene is not the whole treatment

Dark rooms, less caffeine and a consistent routine are useful, but modern insomnia care goes further. The European guideline recommends Cognitive Behavioural Therapy for Insomnia (CBT-I) as first-line treatment for chronic insomnia, including when other health conditions coexist. It can be delivered face-to-face or digitally. ^[13]

NICE’s 2026 work on digital CBT-I describes the core components clearly: stimulus control, sleep scheduling/restriction, sleep education, cognitive restructuring and relaxation. Sleep hygiene sits inside that package rather than replacing it. ^[14]

A useful way to understand this is that chronic insomnia often becomes a learned system: the bed becomes associated with trying, checking, worrying and being awake. CBT-I retrains that relationship rather than simply adding more sedating substances.

Two CBT-I ideas that sound strange until you understand them

1. Stimulus control: stop training the bed to mean “awake and frustrated”

Go to bed when genuinely sleepy rather than because the clock says you “should”. Keep a reasonably stable wake time. If you are lying awake and becoming more alert/frustrated, CBT-I often uses getting out of bed temporarily and returning when sleepy so that bed becomes associated more strongly with sleep. ^[14]

2. Sleep scheduling/restriction: spend less time trying to manufacture sleep

CBT-I may temporarily reduce time in bed closer to the amount of time the person is actually sleeping, then gradually expand the sleep window as efficiency improves. This increases sleep drive and reduces long periods of wakefulness in bed. ^[14]

This is more sophisticated than simply “go to bed earlier”. It is best learned through a proper CBT-I programme—particularly if you have significant daytime sleepiness, bipolar disorder, epilepsy, parasomnias or a job where sleepiness creates safety risk.

Digital CBT-I is no longer a second-class version

Digital delivery matters because access to trained CBT-I therapists is limited. NICE already recommends Sleepio as an option for treating insomnia/insomnia symptoms in primary care for people who would otherwise receive sleep-hygiene advice or sleeping pills, with medical assessment first when another sleep disorder may be present. ^[15]

A 2025 meta-analysis of 49 randomised trials involving more than 20,000 participants found fully automated digital CBT-I significantly reduced insomnia severity versus control conditions, although study heterogeneity was substantial. ^[16]

NICE is also developing updated health-technology guidance specifically on digital CBT-I, with final guidance expected in January 2027. Its 2026 scope again identifies CBT-I as the first-line treatment for long-term adult insomnia. ^[14]

Exercise improves sleep—but do it because it helps the whole system

Exercise is one of the better-supported non-drug adjuncts. A 2024 systematic review/meta-analysis of 19 studies found exercise improved both objective and subjective sleep outcomes in people with insomnia. ^[17]

A newer 2026 network meta-analysis of 31 RCTs in sedentary adults with insomnia also found beneficial effects across different exercise modalities, though the “best” type varies by outcome and the certainty is not high enough to prescribe one perfect exercise formula. ^[18]

Practical options:

• regular walking or aerobic exercise;
• resistance training;
• yoga or another mind-body practice;
• outdoor activity that also gives daytime light exposure.

NHS advice recommends regular daytime exercise but avoiding vigorous exercise close to bedtime if it makes you more alert. ^[12]

Caffeine, alcohol and the “sedation is sleep” mistake

Caffeine can stay active for hours, so somebody who metabolises it slowly may still be affected by an afternoon coffee. NHS insomnia advice recommends avoiding tea/coffee, nicotine and alcohol for at least six hours before bed. ^[12]

Alcohol can make you feel sleepy at first but often fragments sleep later in the night. That matters especially in a Nux-vomica-type pattern where alcohol becomes part of the “switch off after work” routine but the person then wakes around 3–4 a.m.

Try a seven-day experiment rather than arguing with yourself about whether caffeine “affects me”:

• record the time of the last caffeinated drink;
• record alcohol and bedtime;
• record sleep-onset time and middle-of-night waking;
• move caffeine progressively earlier;
• compare the pattern after a week.

Magnesium: the best recent trial suggests a modest effect, not a knockout pill

Magnesium is one of the most heavily marketed sleep supplements. A 2025 double-blind placebo-controlled trial in 155 adults with poor sleep used 250 mg/day elemental magnesium as magnesium bisglycinate. Insomnia Severity Index scores improved slightly more than placebo after four weeks, but the effect size was small. The signal appeared larger in people reporting lower dietary magnesium intake. ^[19]

That is useful evidence, but it does not make magnesium a replacement for CBT-I.

Food sources include nuts, seeds, beans, whole grains, leafy greens and cocoa. Supplements can cause gastrointestinal side effects, and impaired kidney function increases the risk of magnesium toxicity. The current NIH adult upper limit for magnesium from supplements/medicines is 350 mg/day unless a clinician recommends otherwise; magnesium from food is not included in that limit. ^[29] If your diet is already magnesium-rich, the chance that another high-dose supplement is the missing sleep solution becomes less convincing.

Valerian: popular, traditional—and still not convincingly effective for insomnia

Valerian is probably the most familiar herbal sleep aid, which makes the evidence especially important. A 2024 umbrella review examined systematic reviews/meta-analyses and concluded that evidence for treating insomnia was weak or inconclusive, with no convincing empirical support on objective/quantitative insomnia outcomes. ^[20]

The European insomnia guideline similarly does not recommend phytotherapeutics for treatment of chronic insomnia. ^[13]

This does not mean nobody ever feels calmer after valerian. It means the evidence is not strong enough to make it the foundation of a chronic-insomnia plan.

Chamomile: reasonable evening ritual, modest evidence

Chamomile is different from taking a strong sedative. It can be part of an evening wind-down ritual and has a relatively gentle traditional use.

A 2024 systematic review/meta-analysis of clinical trials found improvements in overall sleep quality, but the included studies varied in population and preparation, and product quality/blinding were limitations. ^[21]

Chamomile therefore fits the category “reasonable adjunct, not proven chronic-insomnia treatment”. NCCIH remains more cautious about the insomnia evidence and notes allergy risk in people sensitive to ragweed/daisy-family plants plus potential medicine interactions, including reported interactions with warfarin. ^[31]

L-theanine: promising for subjective sleep quality, but clinical-insomnia evidence is still developing

L-theanine is an amino acid naturally present in tea. A 2025 systematic review/meta-analysis found small improvements in subjective sleep-onset latency, daytime dysfunction and overall subjective sleep quality. However, the authors highlighted the limited number of studies using pure L-theanine and the need for better trials. ^[22]

This is an important nuance: green tea contains L-theanine and caffeine. Drinking more caffeinated tea in the evening to obtain theanine may therefore undermine the goal.

It is reasonable to see L-theanine as an optional relaxation/sleep-quality adjunct, not as treatment for sleep apnoea, restless legs, bipolar-related reduced need for sleep or chronic insomnia that needs CBT-I.

Ashwagandha: a possible stress-linked sleep adjunct with more safety baggage

A 2024 systematic review/meta-analysis of placebo-controlled trials found ashwagandha extracts improved several sleep measures including sleep-onset latency, total sleep time, sleep quality and sleep efficiency, although only five RCTs (254 people) were available and the authors called for larger studies. ^[23]

It may therefore be more plausible when poor sleep sits inside a stress/anxiety picture than when insomnia is maintained mainly by behaviour, circadian timing or another sleep disorder.

Ashwagandha is not automatically benign: NCCIH advises avoiding it in pregnancy and cautions around thyroid/autoimmune disorders, rare liver injury and interactions with sedatives, thyroid hormone, blood-pressure, diabetes and immune-modifying medicines. ^[30] Do not build a multi-herb “sleep stack” without checking interactions.

Melatonin: timing hormone first, sleeping pill second

Melatonin helps regulate circadian timing. The evidence becomes confusing when it is treated as though every form, dose and timing schedule were interchangeable.

The current European insomnia guideline recommends prolonged-release melatonin as an option for up to three months in people aged 55 and over, while it does not recommend fast-release melatonin as routine chronic-insomnia treatment. ^[13]

In the UK, melatonin is prescription-only and is mainly used for short-term sleep problems in people aged 55 and over, with some specialist uses outside that group. ^[24]

A 2024 dose/timing meta-analysis found that melatonin’s effect depends substantially on when it is taken as well as dose, reinforcing that it should not be approached as a generic bedtime gummy. ^[25]

Earlier chronic-insomnia meta-analysis found limited benefit in ordinary adult chronic insomnia overall, which helps explain why guideline recommendations remain selective rather than universal. ^[26]

OTC “sleeping tablets” can create a false sense of treatment

Some pharmacy sleep aids contain sedating antihistamines such as diphenhydramine. They may make you sleepy for a short period but they do not retrain chronic insomnia. NHS guidance says pharmacy sleep aids may help for around 1–2 weeks but should not be used longer, and they can cause next-day drowsiness. ^[12]

Sedating antihistamines can also impair coordination, reaction time and judgement. ^[27]

Prescription sleeping medicines are likewise generally used cautiously and for limited periods. A new 2026 AASM guideline on combination treatment found that adding medication to CBT-I may be preferable to medication alone in some people, but did not recommend routinely adding medication on top of CBT-I when CBT-I alone is suitable. ^[28]

The bedroom matters—but the clock matters more

A cool, dark, quiet and comfortable bedroom helps. But chronic insomnia often responds more strongly to consistent timing than to buying more sleep products.

Useful anchors include:

• get up at roughly the same time every day, including after a poor night;
• get daylight and activity during the day;
• avoid long daytime naps if they reduce night-time sleep drive;
• wind down before bed rather than taking work/arguments into bed;
• keep the bed for sleep rather than hours of phone scrolling and wakeful problem-solving.

The NHS specifically advises only going to bed when sleepy, maintaining a consistent wake time, creating a dark/quiet room, exercising during the day and avoiding late caffeine/alcohol, large late meals and screens immediately before bed. ^[12]

Check whether the problem is actually insomnia

Not every night of poor sleep is primary insomnia. NHS guidance lists several conditions that can produce or mimic it, including restless legs syndrome, overactive thyroid, menopause, long-term pain, sleep apnoea, mental-health conditions and medication effects. ^[12]

Ask for assessment when the history includes:

• loud snoring, choking/gasping or witnessed breathing pauses;
• an irresistible need to move the legs at night;
• marked daytime sleepiness or falling asleep unintentionally;
• weeks of unusually reduced need for sleep with high energy, impulsivity or elevated/irritable mood;
• new thyroid-type symptoms, significant pain or medication changes;
• sleepwalking/other parasomnias that create injury risk.

The European guideline recommends sleep testing when another sleep disorder is suspected or when insomnia is treatment-resistant—not routinely for everyone with ordinary insomnia symptoms. ^[13]

When to get professional help

See a GP if changing sleep habits has not helped, insomnia has continued for months or the daytime impact is making it difficult to cope. NHS guidance notes that CBT may be offered face-to-face or through an online programme and that referral to a sleep clinic may be appropriate when another sleep disorder is suspected. ^[12]

Do not drive when sleep-deprived enough to feel sleepy at the wheel.

Seek prompt mental-health assessment if sleeplessness occurs with severe depression, major anxiety deterioration, hallucinations, unusual high-energy reduced need for sleep, or thoughts of self-harm. Those states need more than a sleep supplement or remedy finder.

Frequently Asked Questions

When the night has a recognisable pattern

Chronic insomnia often becomes much clearer once you stop calling every bad night “the same”. One person is too mentally bright to fall asleep; another is wired from prolonged exhaustion; another wakes at 3–4 a.m. inside an overwork/stimulant loop; another has lost sleep through caregiving; another becomes restless only in warm rooms before midnight.

If several remedy pictures overlap, insomnia has continued for months, or sleep problems sit alongside anxiety, pain, restless legs, menopause, digestive symptoms or medication effects, a consultation can look at the broader homeopathic pattern while CBT-I, medical assessment and other appropriate sleep care continue.

Explore Homeopathy Consultations

References

1. Qandil, I. (n.d.) ‘Coffea cruda’ [source record titled ‘Coffea curda’], IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/coffea-curda/ (Accessed: 25 August 2026).
2. Qandil, I. (n.d.) ‘Scutellaria lateriflora’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/scutellaria-lateriflora/ (Accessed: 25 August 2026).
3. Qandil, I. (n.d.) ‘Nux vomica’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/nux-vomica/ (Accessed: 25 August 2026).
4. Qandil, I. (n.d.) ‘Passiflora’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/passiflora/ (Accessed: 25 August 2026).
5. Qandil, I. (n.d.) ‘Cocculus indicus’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/cocculus-indicus/ (Accessed: 25 August 2026).
6. Qandil, I. (n.d.) ‘Tilia europaea’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/tilia-europaea/ (Accessed: 25 August 2026).
7. Qandil, I. (n.d.) ‘Avena sativa’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/avena-sativa/ (Accessed: 25 August 2026).
8. Qandil, I. (n.d.) ‘Kali phosphoricum’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/kali-phosphoricum/ (Accessed: 25 August 2026).
9. Qandil, I. (n.d.) ‘Zincum valerianicum’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/zincum-valerianicum/ (Accessed: 25 August 2026).
10. Qandil, I. (n.d.) ‘Argentum nitricum’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/argentum-nitricum/ (Accessed: 25 August 2026).
11. Qandil, I. (n.d.) ‘Lactuca virosa’, IQ Homeopathy. Available at: https://www.iqhomeopathy.com/materia-medica/lactuca-virosa/ (Accessed: 25 August 2026).
12. NHS (2024, current 2026) ‘Insomnia’. Available at: https://www.nhs.uk/conditions/insomnia/ (Accessed: 25 August 2026).
13. Riemann, D. et al. (2023) ‘The European Insomnia Guideline: An update on the diagnosis and treatment of insomnia 2023’, Journal of Sleep Research, 32(6), e14035. doi:10.1111/jsr.14035.
14. National Institute for Health and Care Excellence (2026) ‘Digital technologies delivering CBT for insomnia in adults: Final scope’, GID-HTE10068. Available at: https://www.nice.org.uk/guidance/gid-hte10068/documents/final-scope (Accessed: 25 August 2026).
15. National Institute for Health and Care Excellence (2022, current 2026) ‘Sleepio to treat insomnia and insomnia symptoms’, HTG624. Available at: https://www.nice.org.uk/guidance/HTG624/chapter/1-recommendations (Accessed: 25 August 2026).
16. Nazari, A., Mirzakhani, A., Garmaroudi, G. and Amani, M. (2025) ‘Effectiveness of Digital Cognitive Behavioral Therapy for Insomnia: A Meta-Analysis of Randomized Controlled Trials’, Iranian Journal of Psychiatry, 20(4), pp.523–544. doi:10.18502/ijps.v20i4.19689.
17. Riedel, A. et al. (2024) ‘The effect of physical exercise interventions on insomnia: A systematic review and meta-analysis’, Sleep Medicine Reviews, 76, 101948. doi:10.1016/j.smrv.2024.101948.
18. ‘The impact of different types of exercise on sleep in sedentary populations: a systematic review and network meta-analysis’ (2026). PMID:42291438.
19. Schuster, J. et al. (2025) ‘Magnesium Bisglycinate Supplementation in Healthy Adults Reporting Poor Sleep: A Randomized, Placebo-Controlled Trial’, Nature and Science of Sleep, 17, pp.2027–2040. doi:10.2147/NSS.S524348.
20. Valente, V. et al. (2024) ‘Does valerian work for insomnia? An umbrella review of the evidence’, European Neuropsychopharmacology, 82, pp.6–28. doi:10.1016/j.euroneuro.2024.01.008.
21. Kazemi, A. et al. (2024) ‘Effects of chamomile (Matricaria chamomilla L.) on sleep: A systematic review and meta-analysis of clinical trials’, Complementary Therapies in Medicine, 84, 103071. doi:10.1016/j.ctim.2024.103071.
22. ‘The effects of L-theanine consumption on sleep outcomes: A systematic review and meta-analysis’ (2025), Sleep Medicine Reviews, 81, 102076. doi:10.1016/j.smrv.2025.102076.
23. Fatima, K. et al. (2024) ‘Safety and efficacy of Withania somnifera for anxiety and insomnia: Systematic review and meta-analysis’, Human Psychopharmacology, 39(6), e2911. doi:10.1002/hup.2911.
24. NHS (2023, current 2026) ‘About melatonin’. Available at: https://www.nhs.uk/medicines/melatonin/about-melatonin/ (Accessed: 25 August 2026).
25. ‘Optimizing the Time and Dose of Melatonin as a Sleep-Promoting Drug: A Systematic Review of Randomized Controlled Trials and Dose-Response Meta-Analysis’ (2024), Journal of Pineal Research. PMID:38888087. doi:10.1111/jpi.12985.
26. ‘Efficacy of melatonin for chronic insomnia: Systematic reviews and meta-analyses’ (2022), Sleep Medicine Reviews. PMID:36179487. doi:10.1016/j.smrv.2022.101692.
27. NHS (2025/2026) ‘Antihistamines’. Available at: https://www.nhs.uk/medicines/antihistamines/ (Accessed: 25 August 2026).
28. Buysse, D.J. et al. (2026) ‘Combination treatment for chronic insomnia disorder in adults: an American Academy of Sleep Medicine clinical practice guideline’, Journal of Clinical Sleep Medicine, 22(1), 56. doi:10.1007/s44470-025-00038-8.
29. National Institutes of Health Office of Dietary Supplements (2026) ‘Magnesium – Health Professional Fact Sheet’. Available at: https://ods.od.nih.gov/factsheets/magnesium-healthprofessional/ (Accessed: 25 August 2026).
30. National Center for Complementary and Integrative Health (2026) ‘Ashwagandha: Usefulness and Safety’. Available at: https://www.nccih.nih.gov/health/ashwagandha (Accessed: 25 August 2026).
31. National Center for Complementary and Integrative Health (2026) ‘Chamomile: Usefulness and Safety’. Available at: https://www.nccih.nih.gov/health/chamomile (Accessed: 25 August 2026).