Swisse Ultiboost Evening Primrose Oil is a premium quality formula to provide premenstrual support for women, help maintain healthy skin and support general health and wellbeing. Gamma Linolenic Acid (GLA): Swisse Ultiboost Evening Primrose Oil is a rich source of GLA, a long-chain fatty acid that may help with inflammation. Premenstrual Support: Research suggests that women with PMS may have low levels of GLA. Evening primrose oil is a source of GLA. GLA helps support women during the premenstrual period. Skin Health: Evening Primrose Oil contains GLA to help maintain the appearance of healthy skin and can help assist with dryness and itching associated with mild skin conditions. Swisse Ultiboost Evening Primrose Oil has been formulated based on scientific evidence to help support the health of women.