Support your active lifestyle and balanced diet with Evening Primrose Oil, which contains naturally occurring gamma-linolenic acid (GLA), an omega-6 fatty acid. Each softgel from Puritans Pride has 500mg of evening primrose oil, as well as 365mg of linolenic acid 45mg of GLA. Support your active lifestyle and balanced diet with Evening Primrose Oil, which contains naturally occurring gamma-linolenic acid (GLA), an omega-6 fatty acid. Each softgel from Puritans Pride has 500mg of evening primrose oil, as well as 365mg of linolenic acid 45mg of GLA. 500mg of evening primrose oil per softgel. 365mg of linolenic acid. 45mg of GLA. Consume as part of an active lifestyle. 100 softgels per pack Evening Primrose Oil is a popular food supplement, providing 500ml of the oil per softgel in addition to 45 mg Gamma Linolenic Acid (GLA).