Nutrition information: average values per capsules % RDA evening primrose oil 500mg providing gamma linolenic acid 37mg vitamin E 6.7 mg 67 (10I U) energy, protein, carbohydrate, and fat negligible, RDA- EC recommended daily amount.,Seven seas pure evening pr5imrose oil is a natural oil extracted from the seeds of the evening primrose flower, this valuable oil is one of nature:s richest sources of the naturally occuring substance GLA, which is essential in the maintenance of good health.