Hordenine

Tier 4 — risky / avoid · Stimulant · MAO-B inhibitor · Caution

PEA-derivative monoamine releaser found at low levels in barley, sometimes added to pre-workouts as a 'mood lifter'. Weak MAO-B inhibitor. Limited safety data at supplement doses. Combination with stimulants or serotonergic drugs is unsafe. Banned in horse racing.

Dose: Avoid