Periwinkle (Vinca minor) leaves provide alkaloids like vincamine. Herbalists and modern practitioners use it to sharpen memory and mental clarity. The herb also supports healthy circulation, especially blood flow in the brain.
You can find periwinkle as a standardized extract or a glycerite. Take it with food to avoid stomach upset. Follow the dosing guide printed on your product because concentrations differ from brand to brand.
Important cautions: Periwinkle can lower blood pressure. Be careful if you take blood pressure medication. Do not use while pregnant or breastfeeding. A doctor or qualified clinician should oversee any long-term routine.