Can I give gabapentin to a friend who suffers from back pain? She has two jobs. No health insuranc?

No you should definitely not give her any. First off it is illegal to supply a prescription medicine to another person. This medication has the potential for many serious side effects and it also has a difficult process for many to get off the medication and it is dangerous to stop without slowly lowering the dose. Many people also find gabapentin to work for a period of time and then frequent dose increases are needed. Also, if her pain isn't due to neuropathy, it's unlikely she will benefit from gabapentin. It's highly advisable she not take this medicine without appropriate doctor oversight.