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Phenylethylamine (PEA)

Naturally occurring monoamine that acts as a neurotransmitter and neuromodulator, promoting euphoria, focus, and emotional well-being

Scientific name2-Phenylethylamine FormulaC8H11N Molecular weight121.18 g/mol CAS64-04-0
60 absorption score
6 safety / 10
20 USD per month
5 documented interactions

Check it against something

No documented links

Phenylethylamine (PEA) with:

Compatibility score 70 out of 100
70 out of 100
No known interaction No documented interaction. Standard timing for each applies.

Check it against your whole stack →

What it does

mechanism and evidence for each claim

Enhanced mood and euphoria

Produces feelings of happiness and well-being

Increases dopamine and norepinephrine while inhibiting reuptake Evidence C-grade 15-30 minutes

Improved focus and mental energy

Enhances concentration and cognitive performance

Stimulates catecholamine release and TAAR1 activation Evidence C-grade 20-60 minutes

Weight management support

May help with appetite control and energy expenditure

Increases metabolic rate and reduces appetite Evidence C-grade 30-90 minutes

Exercise performance enhancement

May improve athletic performance and endurance

Increases catecholamine release and pain threshold Evidence C-grade 20-60 minutes

Antidepressant effects

May help with depression and low mood states

Modulates monoamine neurotransmitters Evidence C-grade 15-45 minutes

Others take these for the same thing

Same goal, different mechanism — check any of them against this one

Vitamin B12 (Cyanocobalamin) Energy & nerve support 250-1000 mcg A 70% Fish Oil (EPA/DHA) Heart & brain health 1-2g EPA/DHA A 85% L-Theanine Calm focus & stress relief 100-400mg B 90% Vitamin B8 (Inositol) Mental health & PCOS support 2-18g (condition dependent) B 95% SAM-e Mood support & liver health 400-800mg A 70% Lithium Orotate Mood & brain support 1-20mg C 60%

Every pair we checked

12 combinations scored by the engine
Phenylethylamine (PEA) + Caffeine No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + Creatine Monohydrate No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + Vitamin D3 No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + Calcium Carbonate No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + Whey Protein No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + Lactase No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + Bovine Collagen No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + DHA No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + Turmeric No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + Fish Oil (EPA/DHA) No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + Magnesium Oxide No documented interaction either way No known interaction 70
Phenylethylamine (PEA) + L-Tyrosine Enhanced catecholamine production Works better together 75

Dosage

As needed empty stomach
Daily100-500mg
Mood enhancement100-500mg as needed
Cognitive boost100-300mg as needed
Weight management100-500mg before meals
Pre workout100-500mg before exercise

When to expect it

First Effects15-30 minutes for mood and energy benefits
Peak Benefits30-60 minutes for optimal effects
Deficiency DevelopmentNot well established
Toxicity OnsetRare, mainly overstimulation with high doses

How to measure it

$200-400
MarkerPhenylethylamine levels (specialized lab)
OptimalNot well established
Deficient belowVariable individual levels
FrequencyOnly for research purposes - not clinically standard

What actually reaches you

The label counts the carrier, your body does not
Absorption High 60 of 100 · absorbs well relative to other forms
Delivered daily 180 mg
Cost per 100 mg delivered $0.37 comparative — uses the absorption score, not a measured percentage

Works better with

3 documented
+
Maoi Inhibitors

Dramatically increases PEA effects and duration

Blocks MAO-B enzyme that breaks down PEA · level B
+
Hordenine

Extends PEA duration and effects

Weak MAO-B inhibition prolongs PEA action · level C
+
Tyrosine

Enhanced catecholamine production

Provides raw material for dopamine synthesis · level C

What not to take with Phenylethylamine (PEA)

2 documented
!
Large Neutral Amino Acids

May compete for transport across blood-brain barrier

Shared transport mechanisms · minor significance
!
Antioxidants High Dose

May interfere with catecholamine effects

Scavenging of catecholamine-related oxidants · minor significance

Medication interactions

Discuss these with a pharmacist before combining
maoi-antidepressants Major

DANGEROUS - may cause hypertensive crisis

What to do: DO NOT COMBINE

stimulant-medications Moderate

May enhance stimulant effects

What to do: Monitor for overstimulation

blood-pressure-medications Minor

May interfere with blood pressure control

What to do: Monitor blood pressure

Available forms

bioavailability compared
Phenylethylamine HCl 60

Phenylethylamine HCl: Fast-acting, Natural euphoria, Focus enhancement, No harsh crash

Food sources

before you supplement
Dark chocolate 0.4-2.2mg per 100g · 40
Aged cheese 0.1-1.7mg per 100g · 35
Red wine 0.2-1.3mg per 100ml · 30
Supplements 100-500mg per capsule · 60

Too little

deficiency signs
  • Depression and low mood
  • Lack of motivation and drive
  • Poor focus and concentration
  • Reduced pleasure and reward sensitivity
  • Low energy and mental fatigue
  • Difficulty experiencing joy
  • Attention deficit symptoms

Too much

toxicity signs
  • Generally safe but potential effects:
  • Elevated heart rate and blood pressure
  • Anxiety and restlessness
  • Overstimulation and jitters
  • Headaches
  • Insomnia if taken late in day

Who benefits most

mood-enhancement-euphoria

Natural mood elevation and euphoria without harsh stimulants

100-500mg as needed
focus-cognitive-enhancement

Short-term focus and mental energy boost

100-300mg as needed
weight-management

May support appetite control and energy expenditure

100-500mg before meals
exercise-performance

May enhance athletic performance and endurance

100-500mg pre-workout
depression-low-mood

May help with depression through monoamine modulation

100-500mg as needed

Where to buy it

compare forms first

Look for Phenylethylamine (PEA) at 100-500mg per serving. The form that matters here is Phenylethylamine HCl.

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How it works

  • Increases dopamine and norepinephrine release
  • Inhibits monoamine reuptake (weak effect)
  • Activates TAAR1 (trace amine-associated receptor)
  • Modulates catecholamine neurotransmission
  • Increases metabolic rate and thermogenesis
  • Rapidly metabolized by MAO-B enzyme

Key findings

what the evidence supports
  • Limited clinical research on supplemental PEA
  • Interesting mechanism but very short duration
  • May be deficient in some depression and ADHD cases
  • Rapid tolerance development limits practical use

Sources: NIH Examine.com · data reviewed 2026-08-01

Compiled by Denis, who maintains this database and holds no medical qualification — every figure here is sourced or derived, never asserted. How we calculate it →

Common questions

What are the benefits of Phenylethylamine (PEA)?

Documented effects: Enhanced mood and euphoria; Improved focus and mental energy; Weight management support; Exercise performance enhancement. Produces feelings of happiness and well-being

How much Phenylethylamine (PEA) should you take per day?

The common daily range is 100-500mg. By goal — mood enhancement: 100-500mg as needed; cognitive boost: 100-300mg as needed; weight management: 100-500mg before meals; pre workout: 100-500mg before exercise.

When is the best time to take Phenylethylamine (PEA)?

As needed empty stomach. First effects are typically reported within 15-30 minutes for mood and energy benefits.

What are the side effects of Phenylethylamine (PEA)?

At excessive doses: Generally safe but potential effects:, Elevated heart rate and blood pressure, Anxiety and restlessness, Overstimulation and jitters, Headaches. Safety rating at normal doses is 6 out of 10.

What should you not take with Phenylethylamine (PEA)?

Separate it from Large Neutral Amino Acids, Antioxidants High Dose by two to four hours. May compete for transport across blood-brain barrier

Does Phenylethylamine (PEA) interact with medications?

Documented interactions with maoi-antidepressants, stimulant-medications, blood-pressure-medications. Discuss these with a pharmacist before combining.

How do you know if you need Phenylethylamine (PEA)?

The marker is Phenylethylamine levels (specialized lab), optimal range Not well established. Common deficiency signs: Depression and low mood, Lack of motivation and drive, Poor focus and concentration, Reduced pleasure and reward sensitivity.

Taken for

52 Brain & Focus

Caffeine · DHA · Fish Oil (EPA/DHA)