I took it according to my own weight, 5 days, once every night, 1 hour before bedtime, and 4 days break, then again 5 days and so on.
It is sold for a 700kg horse, and it has notches with weight on it to dose it right. I am only 47 kgs, so I took just enough to get to the next 50 kg nick each time. One paste tube was enough for over 14 days for me. Since it tastes yuck, I put it on a spoonful of yoghurt and drank a glass of water after.
My partner took it , too, but he weighs less, so he took it to the 70kg notch. He just swallowed the stuff just like it was, with water.
Cost effective: 8 NZD for 10-14 days. Just make sure it is really only Iver in it, and not iver, prazi and whatnot.