My 2 cents... Zoom is Barry's dad from Earth 2..
According to what I know Zoom doesnt get is power from the Speed Force.. He manipulates time.. so I could see a serum to drain his speed not working on him..
But that was comic Zoom, this is TV Zoom. Bet that's not the case here.
This Zoom seems able to "eat" other speedsters speed force and use it to increase his speed, if I understand what's happened to Jay and the other hints dropped as to Zoom's motivation. So, interpolating, I am assuming Jesse Quick will get her speed from Zoom, er, "throwing up" some of his stolen speed force onto her (probably by accident).
Although, I'd ratehr she get it from the speed formula, I do want to hear how that's pronounced... 3X2(9YZ)4A. I'm also still hoping they bring Kilg%re on as a villain, just because I want to hear how that name is pronounced. Ha Ha!