Of course, Chloe, you have to remember that there are a lot of factors that go into what happens when you take a certain medication. The amount can make a big difference. Your own metabolism can make somewhat of a difference. Also your diet, how much exercise you get, what other medicines you are taking. All of which the doctor is supposed to take into account. It’s really hard to say medicine “A” will do this or that, when there are so many other factors that will be affecting the results.