L-Tetrahydropalmatine (L-THP)

• 10 grams powder
• Dry-fill capsules (50 mg, 60-count / 3 g)

Research indicates L-THP primarily acts through modulation of dopamine and other monoamine pathways. Findings suggest it may: These mechanisms position L-THP as a compound of interest in research involving anxiety regulation, reward-pathway modulation, and nervous-system calming without heavy sedation.

• Function as a dopamine D2 receptor antagonist
• Modulate dopamine release and turnover
• Influence serotonin and norepinephrine signaling
• Reduce excessive dopaminergic activity
• Support GABAergic tone indirectly
• Attenuate stress-induced neurochemical responses

L-THP is commonly studied in

• Anxiety and stress-response models
• Dopaminergic-regulation research
• Reward-pathway and addiction-related studies
• Sleep-support and relaxation pathways
• Analgesic and pain-modulation research
• Mood-stabilization models
• Autonomic-nervous-system balance studies

Reported or historically noted findings include: Because L-THP antagonizes dopamine receptors, excessive dosing in research models may blunt motivation or arousal metrics.

• Mild sedation or drowsiness at higher doses
• Dizziness or lightheadedness
• Gastrointestinal discomfort
• Reduced motivation in high-dose dopaminergic-suppression models
• Rare headache

L-THP is frequently studied alongside compounds that balance arousal, stress, and dopaminergic tone