Not for sure about the other doses, but they are probably different also.

I have the 600mg and they no longer say neurontin on them and they have a score line down the middle to break them with great accuracy. Phizer has merged with park-davis is what i was told and Phizer-davis is in court right now batteling the generic producers of this drug. By law, only 30 months are allowed to draw this whole thing out. Just a tactic to delay the generics coming to market. They will be dirt cheap. YAY!

This pill has actually answered one of my questions as to wether you can split a 600mg Neurontin. Well, you can because the pill has the score line for you to do so.

faster than a speeding ticket