Melatonin & Circadian Rhythm — for sleep onset and jet lag
Melatonin is the most widely studied sleep supplement. It works best for circadian shifts (jet lag, shift work, delayed sleep phase) — not as a general sedative. Lower doses (0.3-1 mg) often work better than higher doses for sleep onset.
Calming Minerals & Aminos — for "wired-but-tired" insomnia
When racing thoughts or muscle tension prevent sleep, these compounds reduce nervous system arousal without sedating you. Best for chronic stress-related sleep issues.
Adaptogens — for cortisol-driven sleep disruption
When sleep problems come from chronic stress or "tired but wired" patterns, adaptogens improve sleep quality by modulating cortisol rhythm. Effects build over weeks.
Sedating Botanicals — for chronic insomnia
These work more like traditional sedatives — useful for established insomnia but with potential next-day grogginess. Lavender (Silexan) has the strongest RCT evidence among sedating botanicals.
Specialty Sleep Compounds
Tart cherry (natural melatonin source), saffron, and PEA have growing evidence for specific sleep issues. These are reasonable second-line options when first-line agents don’t fit.
Frequently Asked Questions
What is the best supplement for sleep?
It depends on the pattern. For trouble falling asleep on a specific night (jet lag, late-night working), melatonin 0.3-1 mg works best. For chronic wired-but-tired insomnia, magnesium glycinate plus ashwagandha addresses the underlying cortisol issue. For racing thoughts, L-theanine 200-400 mg reduces mental arousal. For nightly sedation needs, lavender oil (Silexan) has the strongest RCT evidence. Sleep hygiene matters more than any supplement.
Is melatonin safe to take every night?
Melatonin appears safe for short-to-medium-term use, but long-term safety data is limited, especially in adolescents. For occasional use (jet lag, shift work, late nights), it’s low-risk. For nightly long-term use, the better question is why you need it — chronic insomnia usually has an underlying cause (stress, sleep apnea, depression, medication side effects) that should be addressed rather than masked. Lower doses work better for sleep than the high doses sold OTC.
Why does melatonin sometimes not work?
Most commercial melatonin doses are 5-10x higher than what your body actually produces. High doses can paradoxically disrupt sleep by causing morning grogginess and resetting circadian rhythm in unwanted ways. Try 0.3-1 mg taken 30-60 minutes before bed instead of 5-10 mg. Also: melatonin works for circadian timing, not for "I can’t turn my brain off" insomnia — that’s an anxiety/cortisol problem better addressed by L-theanine, magnesium, or ashwagandha.
What is better — melatonin or magnesium for sleep?
Different problems. Melatonin signals "it’s time to sleep" and helps with circadian shifts and sleep onset. Magnesium reduces nervous system arousal and helps with restless sleep, muscle tension, and night waking. For most people with chronic sleep issues, magnesium glycinate (200-400 mg at bedtime) helps more than melatonin. They can also be combined.
Do sleep supplements cause dependency?
Most don’t cause physiological dependence (unlike benzodiazepines or Z-drugs). Melatonin, magnesium, L-theanine, and ashwagandha can all be discontinued without withdrawal. Valerian and possibly lavender may have mild psychological dependence. The bigger issue is masking — using supplements for years instead of addressing what’s actually disrupting your sleep (stress, sleep apnea, medication, depression).
When should I see a sleep specialist?
See a doctor if insomnia lasts more than a month, if you snore loudly with daytime fatigue (possible sleep apnea), if sleep problems severely impact daily function, if you wake unrefreshed despite adequate hours, or if depression or anxiety symptoms accompany the insomnia. Chronic insomnia often has treatable underlying causes. Cognitive behavioral therapy for insomnia (CBT-I) outperforms medications for long-term sleep improvement and should be tried before chronic supplement use.