Historically, a human being was not necessarily a natural person in some jurisdictions where a slave was a thing (subject of a property right) rather than a person. In many cases, fundamental human rights are implicitly granted only to natural persons.
Phenylalanine amino acid > Tyrosine amino acid > L-Dopa > Dopamine > Norepinephrine > Epinephrine. Mucuna pruriens is an herb that contains a small percentage of natural L Dopa. Mucuna pruriens is available without a prescription. For more information on mucuna pruriens and levodopa, click on the link provided.
March 27 2014 Mucuna pruriens, commonly known as velvet bean, contains L-Dopa which is used to make dopamine, an important brain chemical involved in mood, sexuality, and movement of the body. Studies in rats show supplementation to increase dopamine content in the cortex of the brain.