Evening Primrose Oil for Menopause Hot Flashes: Systematic Review and Meta-Analysis

Area of Science:

• Menopause research
• Integrative medicine
• Women's health

Background:

• Hormone replacement therapy (HRT) for hot flashes carries risks like cardiovascular disease and breast cancer.
• Alternative treatments for menopausal symptoms are sought due to HRT concerns.
• Evening primrose oil (EPO) is a commonly used herbal remedy for hot flashes.

Purpose of the Study:

• To systematically review randomized controlled trials and controlled clinical trials on EPO for alleviating hot flashes in menopausal women.
• To compare the efficacy of EPO against placebo and other interventions.

Main Methods:

• Systematic review adhering to PRISMA guidelines.
• Data analysis using Review Manager version 5.3 and Cochrane Collaboration tool.
• Inclusion of randomized controlled trials and controlled clinical trials.

Main Results:

• EPO showed reduced hot flash severity compared to placebo when used for less than 6 months.
• No significant differences were found in hot flash frequency or duration between EPO and placebo.
• EPO use was associated with mild nausea and headache.
• EPO showed no significant difference in hot flash severity versus black cohosh at 4 weeks, but severity was higher at 8 weeks.

Conclusions:

• Current evidence is insufficient to definitively conclude the benefits of EPO for alleviating hot flashes.
• Further research is required to provide robust evidence for menopausal women considering EPO.
• The efficacy of EPO compared to other treatments like black cohosh requires more investigation.