Description_x000D_ Packaging_x000D_ 5, 25 mg in glass bottle_x000D_ Biochem/physiol Actions_x000D_ 1-Methyl-1,2,3,4-tetrahydroisoquinoline (1MeTIQ) is an endogenous antidepressant and parkinsonism-preventing substance that demonstrates neuroprotectiveactivity. Following systemic administration in rats, 1-Methyl-1,2,3,4-tetrahydroisoquinoline produces antidepressant-like effect similar to the effect of imipramine. 1MeTIQ is a reversible short-acting moderate inhibitor of MAO A/B._x000D_ Features and Benefits_x000D_ This compound is featured on the Dopamine and Norepinephrine Metabolism and Histamine Synthesis and Metabolism pages of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.