An oil extracted from the seeds of the evening primrose. It contains gamma-linolenic acid and is used in complementary and alternative medicine, especially in the treatment of premenstrual syndrome: at night I take evening primrose oil, vitamin E, and St John’s wort
More example sentences
- Further studies are warranted to examine the possible therapeutic effects of evening primrose oil for hot flashes.
- She recommends taking 3 to 4 g of evening primrose oil daily.
- The most investigated source of essential fatty acid has been evening primrose oil, which contains 9% linolenic acid.
For editors and proofreaders
Syllabification: eve·ning prim·rose oil
Definition of evening primrose oil in:
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