Is evening primrose oil effective after all? I still have my doubts!
Evening primrose oil (EPO) is amongst the best-selling herbal remedies of all times. It is marketed in most countries as a dietary supplement. It is being promoted for eczema, rheumatoid arthritis, premenstrual syndrome, breast pain, menopause symptoms, and many other conditions. EPO seems to be a prime example for the fact that, in alternative medicine, the commercial success of a remedy is not necessarily determined by the strength of the evidence but by the intensity and cleverness of the marketing activities. Evening primrose oil has been extensively tested in clinical trials for a wide range of conditions, including eczema (atopic dermatitis), postmenopausal symptoms, asthma, psoriasis, cellulite, hyperactivity, multiple sclerosis, schizophrenia, obesity, chronic fatigue syndrome, rheumatoid arthritis, and mastalgia. As I have reported previously, these data were burdened with mischief and scientific misconduct, and it is therefore not easy to differentiate between science,
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