1. The problem statement, all variables and given/known data I need to find the best equation possible for administration of a drug. I have found two types of equations; the first is by starting with a dose (d) and adding that same dose so that it builds up slowly over time. This is shown as the equation y(T)=de^(-kT) where T is the time interval between the dosages, e is the exponential constant and k is a proportionality constant. Or there is the second option where the first dose is the maximum effective dose followed by smaller doses to 'top up' the concentration to the maximum. The maximum effective dosage is denoted by Ys=d/1-e^-kT where Ys is the saturation level Therefore the equation for this method would be Ys=Yse^-kT+Yd where the small dose is d. Are there any equations more effective than the latter?