*Warning! If you have the idea of using this chemical as an antiarrhythmic agent, consult a physician before proceeding. "Tinkering" with cardiac functions is not a good idea. A freelancer can disrupt cardiac rhythm and possibly damage the heart. There isn't really a "commercial source" for this product, which is derived from scotch broom. That's because it is still being looked at for effects and side effects in "cardiac smoothing" applications. This narcotic alkaloid lacks FDA approval. Consult herbal specialists and do more homework before launching any projects.