Evening primrose (Oenothera erythrosepala or Oenothera odorata), which is familiar in Japan as well, contains Α-linolenic acid (GLA) and is utilized for the treatment of atopic patients in European countries such as England, Germany and France.
Dr. David Horobin, who is a professor at Montreal University in Canada and an authority on research of unsaturated fatty acid, developed an atopic treatment utilizing Α-linolenic acid (GLA). He produced a new curative means, an oral administration of evening primrose seed oil.
Throughout his research covering 25 years, Dr. Horobin found that atopic dermatitis patients had only 50% of the normal amount ofΑ-linolenic acid in their blood. Furthermore, it was ascertained that mothers with atopic constitution had 50 % less Α-linolenic acid in their breast milk than healthy mothers did. Therefore, he considered a possibility to supply Α-linolenic acid from plants in nature and took notice of "evening primrose". Then, he accomplished the abstraction of GLA contained in seeds of evening primrose.
The usefulness of Α-linolenic acid on atopic dermatitis is also verified by a clinical demonstration at Bristle University. In this clinical demonstration, it is reported that atopic patients from a slight degree to a medium degree, including of 127 children and 240 adults, experienced relief from symptoms of itching after a dosage of GLA. In addition, 116 out of 179 patients with serious cases of atopic dermatitis also experienced relief from symptoms of itching.