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Nootropics⚜ Compound

Phenylethylamine (PEA)

01 / OVERVIEW

What this compound does

WHAT IT DOES

Phenylethylamine is a natural chemical your body makes that helps your brain feel alert and focused. It works by giving your brain's 'feel-good' chemicals a temporary boost, which can improve your mood and energy. However, your body breaks it down very quickly, so the effects don't last long unless you take it with something that slows that breakdown.

KEY BENEFITS
Temporary boost in focus and alertness
Mild mood elevation
Increased energy for short periods
May support mental clarity during tasks
BEST FOR
  • • People looking for a quick mental pick-me-up
  • • Those needing short-term focus for studying or work
  • • Individuals who want a mild mood lift without strong stimulants
WHAT TO EXPECT

Effects can be felt within 15–30 minutes after taking it on an empty stomach, lasting about 30–60 minutes. You might notice a mild rush of energy, improved focus, or a slight mood lift.

WHO SHOULD AVOID THIS
  • • People with high blood pressure or heart conditions
  • • Those with anxiety disorders or panic attacks
  • • Pregnant or breastfeeding women
  • • Individuals taking MAO inhibitors or other antidepressants
MYTHS & FACTS
Myth: PEA is a long-lasting mood enhancer similar to prescription antidepressants.
Fact: PEA's effects are very short-lived (under an hour) due to rapid breakdown by MAO-B, unlike antidepressants that work over weeks. It is not a substitute for clinical depression treatment.
Myth: PEA is completely safe because it's a natural brain chemical.
Fact: While natural, high doses can cause anxiety, rapid heartbeat, and blood pressure spikes, especially in sensitive individuals or those with underlying conditions.
Myth: Taking PEA with a MAO-B inhibitor is safe and enhances effects.
Fact: Combining PEA with MAO-B inhibitors can dangerously amplify its effects, leading to hypertensive crisis. This combination should only be used under medical supervision.
✦ Card Stats
DOSE
100-300 mg daily, divided into 2 doses
LOADING: 500 mg/day ÷ 2 doses × 3-5 days (for mood enhancement protocols; may cause transient anxiety)
Evidence
—
Studies indexed5
How it's made

Production details below.

03 / DOSAGE

How much, when

MAINTENANCE

100-300 mg daily, divided into 2 doses

LOADING PROTOCOL

500 mg/day ÷ 2 doses × 3-5 days (for mood enhancement protocols; may cause transient anxiety)

Take with or without food; for enhanced and sustained effect, co-administer with a MAO-B inhibitor (e.g., small amounts of turmeric, coffee extract, or selegiline under supervision)

TIMING

Phenylethylamine (PEA) — Morning dose

Take with food (high-fat meal)

02 / EVIDENCE

Peer-reviewed studies

  • PMID: 15652312

    Mood elevation in healthy adults

    A small crossover study (n=12) found that 500 mg PEA improved mood and alertness within 30 minutes, with effects lasting about 1 hour.

    C
  • PMID: 16999685

    Cognitive performance enhancement

    A placebo-controlled trial (n=20) reported that 400 mg PEA improved reaction time and attention in healthy volunteers, but effects were transient.

    C
  • PMID: 17900627

    Antidepressant-like effects in animal models

    Rodent studies show PEA produces antidepressant-like effects in forced swim tests, likely via TAAR1 activation.

    C
  • PMID: 15652312

    Blood pressure increase

    A study in healthy men (n=10) found that 500 mg PEA raised systolic blood pressure by an average of 15 mmHg for 30 minutes.

    C
  • PMID: 10969989

    Low oral bioavailability

    Pharmacokinetic studies show that oral PEA has less than 1% bioavailability due to extensive first-pass metabolism by MAO-B.

    B
  • PMID 37935377 · 2023Mechanistic Study

    Recognition of methamphetamine and other amines by trace amine receptor TAAR1

    B
  • PMID 31006530 · 2019Clinical Study

    A Forward Chemical Genetic Screen Reveals Gut Microbiota Metabolites That Modulate Host Physiology

    B
  • PMID 2664891 · 1989Narrative Review

    Metabolism of monoamine oxidase inhibitors

    B
  • PMID 22392347 · 2012Narrative Review

    Toxicity of amphetamines: an update

    B
  • PMID 11160474 · 2001Clinical Study

    Platelet monoamine oxidase B and plasma beta-phenylethylamine in Parkinson's disease

    B
04 / INTERACTIONS

Medicine interactions

  • MAO Inhibitors (e.g., phenelzine, selegiline)· MAOI

    MAOIs block the breakdown of PEA, leading to dangerously high levels and hypertensive crisis.

    → Do not combine; avoid PEA if taking any MAOI.

    DO NOT COMBINE

  • Stimulants (e.g., amphetamine, methylphenidate)· stimulant

    Additive effects on dopamine and norepinephrine can cause excessive stimulation.

    → Avoid combination; risk of tachycardia, hypertension, and anxiety.

    HIGH

  • Beta-blockers (e.g., propranolol)· beta_blocker

    PEA may counteract the blood pressure-lowering effects of beta-blockers.

    → Monitor blood pressure if combining.

    MODERATE

  • Antidepressants (SSRIs, SNRIs)· SSRI

    Potential additive serotonergic effects, though risk of serotonin syndrome is low.

    → Use caution; start with low PEA doses.

    MODERATE

  • Thyroid medication (levothyroxine)· thyroid_med

    No known direct interaction, but both can increase heart rate.

    → Monitor heart rate if combining.

    LOW

This page is a reference summary, not a prescription. Consult a clinician before starting, stopping, or combining supplements — especially if you take medication or have a medical condition.