I bought a huge tub from my local health shop, cost £10.99 and should last a month apparently. Came home made up a huge glass of it, and by God it's weird but almost immediately I felt so full up that I could barely move. It's all fine now, and obviously too early to tell if it's going to work but I've read a lot of stuff about psyllium husks on the net and it's used widely for colonic cleansing (yes please!) Seems as though you have to have the husks really rather than the capsules for the best effect. Drink up quickly otherwise it turns into wallpaper paste.