Sleep Supplements Guide - What Works and What Doesnt
Sleep supplements are a huge market. Most dont work. Here are the ones that do.
What Actually Works
1. Magnesium (Specifically L-Threonate)
Best for: falling asleep faster, deeper sleep
The only form proven to cross blood-brain barrier. Take 1,000-2,000 mg 30-60 min before bed.
2. Melatonin (Low Dose)
Best for: falling asleep faster, jet lag
Dose: 0.3-0.5 mg (low) - not the 5-10 mg you see in stores (too high for most)
3. L-Theanine
Best for: relaxation, falling asleep
200 mg 30 minutes before bed. Calm focus without drowsiness.
4. Glycine
Best for: sleep quality, body temp regulation
3g before bed. Mildly effective, well-studied.
5. Ashwagandha
Best for: stress-related insomnia, cortisol reduction
300-600 mg KSM-66 1-2 hours before bed.
6. Valerian Root
Best for: falling asleep faster
Has evidence but mixed. Doesnt work for everyone.
Sleep Hygiene Matters Most
Supplements are 20% of the battle:
- Consistent sleep/wake time
- Dark room (or sleep mask)
- Cool temperature (65-68F)
- No screens 1 hour before bed
- No caffeine after 2pm
- No alcohol (disrupts sleep architecture)
The Bottom Line
Magnesium L-Threonate, low-dose melatonin, and ashwagandha have the strongest evidence. Fix sleep hygiene first.
The Magtein Magnesium L-Threonate is the top sleep supplement pick.
Disclaimer: Informational.