I am not sure if this is what requested, but the data is for the following;
1) Omega3: V, L & Gen L 2) Niacin: Niacin, Niaspan, Nicotinic Acid & Niacin ER (I guess this is the generic as it has the largest Rx of the total) 3) Fenofibrate: Fenofibrate, Tricor, Triglide
Looking at the charts, we can see that Fenofibrate had the lowest decrease from Jan-14 till October-15 while Niacin was slashed by half (50% reduction in Rx)