Nah the nurse said that 8mg is quite a low dose, you can go up to 24mg max a day... Sometimes I spit it into my mask and go home n snort a bit of it... If you use alcohol mouthwash before you put it under your tongue you get max bio-availability =)
I'm quite happy to stay on it for a while yet... Coke is overrated full stop, you can get great speed for a fraction of the price with pretty much the same results...