Gamma-linolenic acid (GLA) is an ω-6 polyunsaturated fatty acid. Unlike common pro-inflammatory ω-6 fatty acids such as linoleic acid (LA) and arachidonic acid (AA), GLA generates anti-inflammatory prostaglandin PGE1 and leukotriene LTB1 through a unique metabolic pathway. Natural sources of GLA are limited: evening primrose oil (EPO) contains approximately 8-10% GLA, while borage oil contains about 20-25% GLA.
The GLA metabolic pathway is: GLA → Dihomo-γ-linolenic acid (DGLA) → PGE1/LTB1 (anti-inflammatory). This pathway competes with the AA → PGE2/LTB4 (pro-inflammatory) pathway. When Δ6-desaturase activity is normal, GLA is efficiently converted to DGLA to produce anti-inflammatory mediators. If Δ6-desaturase activity declines (common in diabetes, aging, and chronic stress), GLA accumulates but cannot be effectively converted, requiring direct supplementation of DGLA-derived GLA.
Evening primrose oil has a long history of use in women's health. Multiple RCTs show that daily supplementation with 1-3g of evening primrose oil for 2-3 menstrual cycles significantly improves premenstrual syndrome (PMS) symptoms: breast tenderness reduced by approximately 63%, mood swings improved by approximately 45%, and edema and headaches relieved by approximately 30%. The effects of evening primrose oil are attributed to PGE1-mediated prolactin regulation and prostaglandin balance.
In the development of functional medicine products, evening primrose oil is the core lipid ingredient in the female endocrine regulation formula of the NeuroEndocrine Balance Series. Combined with DIM (promoting beneficial estrogen metabolism), Vitex (regulating luteinizing hormone), and Inositol 40:1 (improving insulin sensitivity), it forms a comprehensive endocrine support solution for women covering "GLA anti-inflammatory + estrogen metabolism + gonadotropin regulation + insulin sensitization."
Dynas Group (HK) offers a female endocrine balance formula in the NeuroEndocrine Balance Series—featuring Evening Primrose Oil + DIM + Chaste Tree Berry + Inositol 40:1—with softgel OEM/ODM customization. Designed around a comprehensive "GLA anti-inflammatory + hormone metabolism + gonadotropin support + insulin regulation" logic, we provide professional contract manufacturing solutions for women's health brands.
