Compare Supplements

Side-by-side comparison of 2 supplements

Phs8.5

Phosphatidylserine

High safety

Rho8.5

Rhodiola Rosea

High safety

Evidence

Evidence Score8.5/10

Studies: 15

Meta-analyses: 5

Evidence Score8.5/10

Studies: 42

Meta-analyses: 3

Outcome Grades

Build stress resilienceB

Reduce anxiety & stressB

NeuroprotectionB

Sharpen focusB

PMS reliefB

Improve memory & learningB

Support moodC

Build stress resilienceA

Reduce anxiety & stressB

NeuroprotectionB

Sharpen focusB

PMS reliefB

Improve memory & learningC

Support moodB

A-F grade per outcome, combining overall evidence with goal-specific relevance. A = strong evidence; F = insufficient. Hover a badge for details.

Pooled effect-size head-to-headBeta

Direct side-by-side from the meta-analysis. Each row is an outcome where ≥2 of your selected supplements have pooled data. Best effect per row highlighted.

Outcome	Phosphatidylserine	Rhodiola Rosea
Improve memory & learning — Working Memory + better · SD-units (composite)	+0.6best weak	+0.7 preliminary · CI ∋ 0

Click an outcome to see the full ranked table on the goal page.

Dosage & timing

Dosage:

300mg

Best Time:

With meals · with food

Take with food

Form:

Soy or sunflower-derived phosphatidylserine

Dosage:

340mg

Best Time:

Morning

Can take on empty stomach

Form:

Standardized to 3% rosavins and 1% salidroside

What you'll notice

🧠 Improved Memory65%

4-12 weeks

📉 Lower Cortisol70%

2 weeks

💡 Mental Clarity55%

4-8 weeks

💪 Reduced Fatigue80%

1 week

🧘 Better Stress Handling75%

1-2 weeks

🎯 Enhanced Mental Performance70%

1 week

Safety

High safety

Contraindications:

Soy allergy (use sunflower-derived)

Drug Interactions:

Blood thinners
Anticholinergic drugs

Side Effects:

GI upsetInsomnia (at high doses)

High safety

Contraindications:

Bipolar disorder (may trigger mania in some)
Autoimmune conditions (immunostimulating effects)

Drug Interactions:

MAOIs
Stimulants
SSRIs

Side Effects:

DizzinessDry mouthInsomnia

Works well with

enhances

complementary

complementary

complementary

stacks-well

complementary

How they work together

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Outcome

Phosphatidylserine

Rhodiola Rosea

Improve memory & learning — Working Memory

+ better · SD-units (composite)

+0.6best

weak

+0.7

preliminary · CI ∋ 0