great herb for lungs. these Mexican herbs have been my lease favorite. unpacking and packing them in my glass jars, i had so much dirt, and dust. cant use straight way must wash first. very low quality company and many , many Mexican medicine has be very low quality. all of West Africas lines were better sent to America. still works good because God is the creator, if its not hybrid. i love this but high quality Mullen tea is better. at Walmart, from January until June, i spent about 1000, on herbs filling up all my jars and buying jars. this was my lease favorite but this work. if you are sensitive you will have allergies to all Mexican herbs. even the ones not sold here. they care about speed to America not quality. thank God no bugs food. America companies have food administration regulations. be careful 🧐