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Scored forOutcome alternatives
Sports Research1 lb • 41 servingsAvailable now$29.65$0.72 / serving4.8 · 37,166 ratings66 / day
56−38 pts from leader
#2069 of 7239 ranked for sleep qualityLeader · Source Naturals, Source Naturals, Sleep Science®, NightRest™ With Melatonin, 100 Tablets — 94
Why this ranks #2069 for sleep quality
- Evidence fitGlycine and L-Serine have moderate human evidence for this outcome.
- Dose fit0 of 2 dosed ingredients land in the studied range. Glycine at 2400 mg is higher than the studied 3-5 g window.
- Price / serving$0.72 per serving — high price tier for this outcome.
- AvailabilityIn stock across major retailers; 99% availability confidence.
- TrustStrong trust signals — consistently high marks from verified buyer ratings.
Trade-offsDose fit is the weak spot on this listValue for money trails the rest of this list
The numbers · Sleep qualityWhat's inside
56
60
27
71
2400 mgAbove rangehigher than the studied 3-5 g window
320 mgBelow rangebelow the studied 3000-3000 mg window
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