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Head-to-head evidence comparison — which supplement is right for you?
Phosphatidylserine wins 2 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Mostly mechanism / observational
1 of 1 studies with measurable effects showed benefit.
Top outcomes
Verdict
Mostly mechanism / observational
Top outcomes
Shared outcomes (1)
Outcomes where both Phosphatidylserine and Tyrosine have evidence — compare verdict strength side-by-side.
100-300mg daily
With meals, Evening or post-workout for cortisol
Soy or sunflower-derived phosphatidylserine
500-2000mg
30-60 minutes before stressful activity, On empty stomach for best absorption
L-Tyrosine powder or capsules
4-12 weeks
2 weeks
4-8 weeks
30-60 minutes
30-60 minutes
30-60 minutes
Effects of a food supplement containing phosphatidylserine on cognitive function in Chinese older adults with mild cognitive impairment: A randomized double-blind, placebo-controlled trial
Journal of affective disorders (2025) · Rct · n=190
A total of 190 participants (mean [SD] age, 67.95 [5.62] years; 70 (36.8 %) male and 120 (63.2 %) female) were randomized to the placebo group (n = 95) and intervention group (n = 95).
Phosphatidylserine containing omega-3 fatty acids may improve memory abilities in non-demented elderly with memory complaints: a double-blind placebo-controlled trial
Dementia and geriatric cognitive disorders (2010) · Rct · n=157
157 participants were randomized to receive either PS-DHA or placebo for 15 weeks.
Phosphatidylserine for the Treatment of Pediatric Attention-Deficit/Hyperactivity Disorder: A Systematic Review and Meta-Analysis
Journal of alternative and complementary medicine (2021) · Meta analysis · n=216
Four studies met the inclusion criteria for the narrative review (n = 344) and three for the meta-analysis (n = 216).
Tyrosine promotes cognitive flexibility: evidence from proactive vs. reactive control during task switching performance
Neuropsychologia (2015) · Rct · n=22
Tyrosine supplementation improved task switching performance under demanding conditions
Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands: A review
Journal of Psychiatric Research (2015) · Review
Converging evidence for cognitive enhancement under demanding conditions
Based on RCT in 190 Chinese older adults with mild cognitive impairment and systematic review of neuronutrients. Limited by small number of direct studies and population-specific findings.
Based on single meta-analysis of 56 participants showing significantly higher blood tyrosine concentrations with supplementation. Clinical significance of elevated blood tyrosine levels for cognitive outcomes remains unclear. Most claimed cognitive effects lack direct study support in the provided evidence.
AI-estimated from published studies. Interpret as directional guidance.
Phosphatidylserine has a higher evidence score (6/10 vs 6/10) and wins in 2 of 3 categories.
For sharpen focus, Tyrosine has a higher relevance score (80 vs 60).
No known interactions between Phosphatidylserine and Tyrosine have been documented in our database. However, always consult a healthcare provider before combining supplements.