It may be pretty new. My doctor sent me to a small specialty pharmacy that had some kind of special promotion for the drug, which meant no co-pay (I’m on medicare and Blue Cross). When I saw my doctor (a pain management specialist) this morning he asked me if it had cost me anything; I took that to mean it’s pretty expensive if you have to pay for it, which suggests it hasn’t been on the market long (given Big Pharma’s behavior here in the US!). I know it’s not yet available in generic form. The manufacturer is Xenoport. I don’t know how your prescriptions work under Canada’s health care system, but if it’s free or at all reasonable for you, it’s worth a try. Check on the internet for more info on Horizant; perhaps make a printout for your doctor and pharmacist. It’s a timed-release pill, and it can therefore be taken in higher dosages, and it may be absorbed by one’s system in a different way from regular gabapentin. It was first prescribed for patients with night-time restless leg syndrome, but it has done wonders for the burning in my leg. It hasn’t completely eliminated the pain, but it is much more tolerable and I can concentrate on other things. I take one tablet, 600 mg daily. I take it at 5:00 p.m., which is what is recommended for people with restless leg, and it helps me sleep, as the burning often disrupted my sleep. The website lists some side effects, but fortunately I haven’t experienced any of them. Good luck!