Mar-Vitoil contains pure Evening Primrose oil extracted from Oenothera biennis seeds by cold pressing, providing a minimum content of 10% gamma-linolenic acid and 68% linoleic acid, and natural vitamin E. MARNYS® Mar-Vitoil is the ally for general well-being in contemporary adult women. Gamma-linolenic acid (GLA) is a fatty acid of the Omega 6 series, produced by the essential fatty acid linoleic acid. GLA quickly incorporated into cell membranes in the form of phospholipids, participating in the formation of prostaglandins and in metabolic pathways. How to use: Take 1-2 capsules a day, preferably before meals.