I have been happy with all of my purchases from this company. I use the Mullein with Osha Root, Lobelia and Yerba Santa; and the combination is amazing for my lungs. I suffered severe lung damage years ago and this combination has been truly life saving for me. I prefer the alcohol versions but do have some glycerine's too; the alcohol formulas do work better; but the glycerine's are decent. I do suggest the alcohol version for a real punch tho.