Reviewed by:
Dr. Patricia Núñez de Aysa — Medical expert in Longevity, specialist in non-surgical Rehabilitation and Traumatology.
Dr. Joel Cuesta Gascón — Medical expert in sports medicine, rehabilitation, and nutrition.
Last updated: May 2026.
In 30 seconds
- Not all sleep-promoting ingredients do the same thing: some help you fall asleep, others help you stay asleep, others help calm the mind before bed.
- Melatonin regulates the sleep-wake cycle and reduces the time it takes to fall asleep.
- 5-HTP supports serotonin synthesis and, by extension, endogenous melatonin.
- Valerian promotes relaxation; ashwagandha lowers cortisol; magnesium aids muscle and nerve relaxation.
- The most effective approach is often a formula that combines several of these ingredients in well-adjusted doses, not an isolated ingredient.
Why poor sleep isn't always the same problem
"I don't sleep well" encompasses very different problems. Before taking anything, it's worth identifying what type of poor sleep you have:
- Difficulty falling asleep: You get into bed, and your mind won't stop. It takes you more than 30-40 minutes to fall asleep.
- Waking up multiple times: You fall asleep easily, but your sleep is interrupted in the middle of the night.
- Early waking: You open your eyes at 4-5 AM and can't go back to sleep.
- Non-restorative sleep: You get enough hours of sleep but wake up feeling as if you haven't rested.
- Racing mind at night: Anxiety or rumination at bedtime that delays sleep.
Each pattern responds better to some ingredients than others. That's why prescribing "the same for everyone" rarely works.
The 5 natural ingredients with the most evidence for sleep
1. Melatonin
Melatonin is the hormone the body naturally produces when light levels drop. It tells the body: "it's time to sleep." Its production decreases with age, with screen use at night, with jet lag, and with rotating work shifts.
How it works: It regulates the circadian rhythm (sleep-wake cycle). It doesn't "knock you out" like a sedative; it signals to the brain that it's time to sleep.
EFSA evidence: With 1 mg before bedtime, it contributes to reducing the time it takes to fall asleep. With 0.5 mg, it helps alleviate the effects of jet lag.
Ideal for:
- People who take a long time to fall asleep
- Shift workers or those with jet lag
- Over 55s (endogenous production decreases with age)
- Those who have misused screens late at night
When it's not the answer: If you fall asleep quickly but wake up multiple times, melatonin alone probably won't solve your problem.
Dosage and timing: 0.5-2 mg, 30-60 minutes before bedtime. Higher doses do not work better and can even worsen the effect.
2. 5-HTP (5-hydroxytryptophan)
5-HTP is an amino acid derived from tryptophan. It is the precursor in the synthesis of serotonin, which in turn is the precursor of melatonin. In other words, 5-HTP provides the body with the raw material to produce its own melatonin and to regulate mood.
How it works: It increases serotonin levels in the central nervous system, which leads to better mood regulation, reduced rumination, and an increased ability to enter deep sleep.
Ideal for:
- People with light or non-restorative sleep
- Those who associate insomnia with low mood or rumination
- Women in the luteal phase or perimenopause
Precautions: Should not be combined with antidepressants (SSRIs, MAOIs) without medical supervision.
Dosage: 50-100 mg at the end of the day.
3. Valerian
Valerian (Valeriana officinalis) is one of the plants with the longest tradition in the field of sleep. Its active compounds interact with GABA receptors in the nervous system, promoting relaxation.
How it works: Reduces central nervous activity, which leads to less tension and better readiness for sleep.
Ideal for:
- People with a racing mind at bedtime
- Those who associate sleep problems with muscle tension
- Mild to moderate nervous insomnia
Limitations: Studies are heterogeneous. It works better combined with other active ingredients (melatonin, magnesium) than alone.
Dosage: 300-600 mg of extract, one hour before bedtime.
4. Magnesium
Magnesium is an essential mineral involved in over 300 bodily reactions, including the regulation of neurotransmitters like GABA. Its bisglycinate form is the most recommended for sleep, due to the combination of magnesium with glycine (another calming amino acid).
How it works: Relaxes muscles, modulates the nervous system, helps regulate cortisol, and promotes the transition to sleep. Not a sedative, but a facilitator.
Ideal for:
- People with muscle tension or night cramps
- Sustained stress
- Women with PMS or perimenopause
- Daily continuous use, not just when "not sleeping"
Dosage: 200-400 mg of elemental magnesium daily. If using for sleep, better at night.
We delve deeper into this topic here: Magnesium: what it's for, benefits, and types.
5. Ashwagandha
Ashwagandha (Withania somnifera) is an adaptogenic plant with a long tradition in Ayurvedic medicine. Its most interesting feature is that it helps regulate the stress response and lower cortisol levels.
How it works: Reduces chronically elevated cortisol (chronic stress), which leads to less anticipatory anxiety at night and better sleep. It is not a sedative.
Ideal for:
- People with sustained stress or feeling "at their limit"
- Those who notice that fatigue doesn't translate into restorative sleep
- Athletes with heavy training loads and poor rest
Standardization to look for: KSM-66 or Sensoril are the most studied extracts.
Dosage: 300-600 mg of standardized extract per day.
Summary table: which active ingredient to choose based on your sleep problem
| Problem | Most Useful Ingredients |
|---|---|
| Difficulty falling asleep (high latency) | Melatonin + magnesium + valerian |
| Nighttime awakenings | Magnesium + 5-HTP + ashwagandha |
| Racing mind at bedtime | Ashwagandha + valerian + magnesium |
| Non-restorative sleep | 5-HTP + magnesium + ashwagandha |
| Jet lag or shift work | Melatonin |
| Chronic stress and poor sleep | Ashwagandha + magnesium |
| PMS or perimenopause with insomnia | Magnesium + 5-HTP + ashwagandha |
Why a combined formula works better than a single ingredient
Sleep doesn't fail for just one reason. Latency (how long it takes to fall asleep), depth, continuity, and the feeling of rest upon waking are distinct processes, regulated by different systems.
A well-combined formula covers several fronts at once:
- Melatonin signals to the brain that it's time to sleep.
- 5-HTP provides raw material for serotonin and endogenous melatonin.
- Ashwagandha lowers cortisol and moderates anticipatory anxiety.
- Magnesium bisglycinate relaxes muscles and the nervous system.
Our Logout formula combines melatonin, 5-HTP, KSM-66 ashwagandha, and magnesium bisglycinate in adjusted doses to support rest from several angles at once. It is formulated by doctors and designed for nighttime use.
What isn't in supplements but also matters
A supplement helps, but it doesn't replace good habits. If you want a more stable effect, review these pillars:
1. Light in the morning, darkness at night
Exposure to natural light during the first 30-60 minutes of the day regulates the circadian rhythm better than any supplement. At night, dim the lights from 9 PM onwards and reduce screen time in the last hour before bed.
2. Room temperature
Sleeping in a cool room (18-20 °C) facilitates entering deep sleep.
3. Caffeine: timing, not just quantity
Caffeine has a half-life of 5-7 hours. If you drink coffee at 5 PM, by 11 PM, 25-50% is still active. For good sleep, it's best to cut off caffeine in the early afternoon.
4. Alcohol: the false friend
Alcohol can help you fall asleep, but it disrupts deep sleep, and nighttime awakenings increase. It is one of the worst allies for rest.
5. Eat dinner early and lightly
Very late or very heavy dinners elevate body temperature and metabolism, making it difficult to enter deep sleep.
6. A winding-down routine
The brain needs 20-30 minutes of transition. A simple routine (warm shower, reading, breathing, warm light) signals that it's time to disconnect.
When to consult a professional
There are situations where medical evaluation is advisable:
- Insomnia lasting more than 3 months
- Apnea, severe snoring, or feeling of choking at night (possible OSA)
- Symptoms of depression, clinical anxiety, or persistent low energy
- Daytime fatigue that affects your work or safety
- Early awakenings with distress (may indicate a mood disorder)
- Suspicion of restless legs syndrome
At tres60, we offer free medical consultation to guide you if you have doubts about your case.
Conclusion
Better sleep is not achieved with an isolated ingredient, but with a coherent approach: understanding what kind of poor sleep you have, taking care of key habits, and, when necessary, relying on a well-combined formula with evidence behind it.
If you're looking for a supplement that covers several fronts at once (latency, depth, and calm), discover Logout, with melatonin, 5-HTP, KSM-66 ashwagandha, and magnesium bisglycinate.
And if you have doubts about which one best suits your case, you can take our test or contact us via WhatsApp: our doctors will answer you for free.
Frequently asked questions
What is the best natural sleep supplement?
There isn't just one: it depends on the problem. For falling asleep faster, melatonin; for a racing mind, ashwagandha and valerian; for tension and awakenings, magnesium; for light sleep, 5-HTP. Combined formulas often work better than isolated ingredients.
How much melatonin should I take?
Between 0.5 and 2 mg, about 30-60 minutes before bedtime. More does not mean better effect; sometimes it even worsens it.
Is melatonin addictive?
No. Melatonin does not cause dependence or tolerance at usual doses. It is a hormone the body already produces.
Can I combine melatonin and magnesium?
Yes, they are perfectly compatible and complementary: melatonin acts on the circadian rhythm and magnesium on neuromuscular relaxation.
Does ashwagandha cause sleepiness?
Not directly. It reduces elevated cortisol and the stress response, which indirectly facilitates rest, but it is not a sedative.
How long does it take for a sleep supplement to take effect?
Melatonin acts on the first night. Ashwagandha and 5-HTP usually need 1-3 weeks of consistent intake to show their full effect. Magnesium improves the general feeling within a few days.
Is it safe to take sleep supplements every night?
The described active ingredients (melatonin, magnesium, 5-HTP, ashwagandha in standardized extracts) are safe for continuous use at recommended doses. If you are taking medication (especially antidepressants, anxiolytics, or anticoagulants), consult your doctor first.
What is the difference between 5-HTP and melatonin?
5-HTP is the precursor to serotonin, which the body then converts into melatonin. You take melatonin already formed. 5-HTP is more useful when the problem is depth and mood; melatonin, when it's latency or rhythm.
References
- Auld F, Maschauer EL, Morrison I, et al. Evidence for the efficacy of melatonin in the treatment of primary adult sleep disorders. Sleep Med Rev. 2017;34:10-22.
- EFSA Panel on Dietetic Products, Nutrition and Allergies. Scientific Opinion on the substantiation of health claims related to melatonin. EFSA Journal 2011;9(6):2241.
- Bent S, Padula A, Moore D, et al. Valerian for sleep: a systematic review and meta-analysis. Am J Med. 2006;119(12):1005-1012.
- Lopresti AL, Smith SJ, Malvi H, Kodgule R. An investigation into the stress-relieving and pharmacological actions of an ashwagandha extract: A randomized, double-blind, placebo-controlled study. Medicine (Baltimore). 2019;98(37):e17186.
- Abbasi B, Kimiagar M, Sadeghniiat K, et al. The effect of magnesium supplementation on primary insomnia in elderly. J Res Med Sci. 2012;17(12):1161-1169.
- Shell W, Bullias D, Charuvastra E, et al. A randomized, placebo-controlled trial of an amino acid preparation on timing and quality of sleep. Am J Ther. 2010;17(2):133-139.
- Salve J, Pate S, Debnath K, Langade D. Adaptogenic and Anxiolytic Effects of Ashwagandha Root Extract in Healthy Adults. Cureus. 2019;11(12):e6466.
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