Answer: Until 1985, growth hormone was extremely difficult to obtain. It had to be retrieved from human pituitary glands. The process was time-consuming and there were problems of contamination and purification. The limited supply insured that studies and double-blind clinical trials were very limited. Then in 1985, a team of scientists headed by Dr. David Goeddel, patented recombinant, or bio-engineered human growth hormone. This is a natural plasmid purified culture (Which can be non-animal derived) which is inserted where it “infuses” in the culture and over time develops the 191 single chain amino acids pattern that duplicates human growth hormone. The inert powder is removed and the remaining (HGH) is freeze-dried and can be used for injections, homeopathic, or oral molecular use. Since 1985, several other pharmaceutical companies have developed there own versions of genetically engineered HGH.
