Dietary Supplement. Triple Therapy with Puracol™ Recommended by top headache doctors to provide nutritional support for migraine sufferers. MigreLief is a natural dietary supplement that is being recommended by top headache doctors. Puracol™ is a proprietary combination of whole leaf feverfew that is high in naturally occurring phytochemicals and a unique feverfew extract high in parthenolides. Does not contain: Yeast, milk, corn, wheat, gluten, soy, salt, artificial flavorings, or preservatives. Where Nature & Medicine Unite *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.