Stress & Cognitive Support

Public • 06 Apr 2026

Rhodiola rosea & phosphatidylserine are combined to support stress reduction & cognitive function. Rhodiola rosea is an adaptogen that enhances resilience to stress, while phosphatidylserine supports cognitive performance & reduces stress-related cortisol levels.

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Buy stack

stress cognitive focus

Rhodiola Rosea

Daily with food

MODERATE

200mg

Phosphatidylserine

Daily with food

MODERATE

100mg

No interactions detected

Each dose includes evidence rationale · doses personalized to your weight

AI risk assessment

Context: No wearable data

PROAI risk assessment is available with Pro.

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Stack pre-check

No personal data connected — connect wearables or upload bloodwork for a personalised check

Clean

Supplements

Training load

Unknown

No flags

No duplication, stimulant, interaction, or recovery concerns detected.

Pre-check is rule-based, not medical advice. Consult a healthcare professional for personalised guidance.

Interaction Analysis

Pharmacokinetic + pair-level checks

Timing optimizations

Rhodiola Rosea

Morning, before meals

Best taken on empty stomach 30 min before breakfast. Avoid taking in the evening as mild stimulant effects may disrupt sleep. (Onset: ~1h, half-life: ~5h)

Phosphatidylserine

Take ~2h before the intended effect window

Reaches peak plasma concentration in ~2h. Half-life ~10h.

Interaction analysis is based on peer-reviewed pharmacology. PMID links go to PubMed. Not medical advice.

Supplements

2 items

Rhodiola RoseaLow

Daily with food •

Enhances resilience to stress & supports cognitive function.

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200mg

Physical & mental fatigue

Low

Population: Adults under stress; physicians during night duty

Study type: Systematic review (11 RCTs/CCTs)

Dose context: 400 mg typical (range: 170–680 mg) • Duration: 1 day to 12 weeks

Some evidence of benefit for physical & mental fatigue across 11 trials; heterogeneity prevents formal meta-analysis. Small crossover RCT of night-shift physicians showed improved fatigue & mental performance with repeated low doses.

Citation: Ishaque S et al. BMC Complement Altern Med. 2012;12:70.•DOI: 10.1186/1472-6882-12-70•https://pubmed.ncbi.nlm.nih.gov/22643043/

Methodological quality of included trials is generally low; larger rigorous RCTs needed.

Endurance performance & physiological biomarkers

Low

Population: Endurance athletes and active adults

Study type: Systematic review & meta-analysis (RCTs)

Dose context: 400 mg typical (range: 200–600 mg) • Duration: 4–12 weeks

Rhodiola supplementation showed positive trends for endurance performance & improved physiological biomarkers; evidence remains limited & study quality variable.

Citation: Ballmann CG et al. / systematic meta-analysis. Front Nutr. 2024 (PMID 41080184).•https://pubmed.ncbi.nlm.nih.gov/41080184/

Most consistent benefits in untrained or moderately trained individuals; elite athlete data lacking.

PhosphatidylserineModerate

Daily with food •

Supports cognitive performance & reduces stress-related cortisol levels.

Buy ingredient →

100mg

Trade-offs & context

Hormones

Significant cortisol attenuation — avoid if cortisol is already low or adrenal insufficiency is suspected

Tolerance

GI discomfort at high doses; fat-soluble — take with food

Context: doses >800mg

Exercise-induced cortisol / cognitive stress

Moderate

Population: Healthy adults; older adults

Study type: RCTs

Dose context: 400 mg typical (range: 200–800 mg) • Duration: 2–12 weeks

Attenuates post-exercise cortisol spike; some benefit to memory in cognitively declining adults.

Citation: Monteleone et al. 1992; Crook et al. 1991•DOI: 10.1016/0165-1781(92)90025-x

Fat-soluble; take with food.

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