Nature's Sunshine 5-W combines black cohosh, squaw vine, dong quai, butcher's broom and red raspberry leaf, herbs traditionally used for women's reproductive and lower body circulation support. Dong quai and black cohosh are widely known in women's herbal formulas, while red raspberry leaf is often used for uterine support.
Butcher's broom adds a circulation angle and squaw vine is a traditional women's herb that helps give the formula its specific character. Before buying, the practical detail is that Nature's Sunshine 5-W is aimed at women's reproductive support and lower pelvic circulation rather than general hormone support alone.