Do you have a scale with at least .01 gram accuracy? I really suggest that you use one when dealing with nefiracetam. The effective dose seems to differ a bit from person to person as well as the possible side effects. The only advice I can give with it is be careful and pay attention to side effects and adjust dose accordingly. It's not the most well tolerated substance out there and can be quite toxic.
I couldn't find much dosage info on it while experimenting so I had to kind of figure it out for myself. I started without a scale and the first dose I took was a 1/4 teaspoon (1.25ml) of powder. Once I got a scale I realized this was around 660mgs (on the high end of single doses). I mixed it with water and it is only partially soluble in water so it didn't mix in all the way. I also regretted this decision as soon as I tasted it. Very, very, very bitter. Some people have said it's not as bad as sulbutiamine but I beg to differ..
That first dose gave me a pretty severe head-tension/head-ache sensation that lasted about 5 hours. The positive effects were disappearance of my ADD symptoms, almost immediately.
Over the next few weeks I cut my dosage down dramatically and got a scale with .001g accuracy and some gel caps. My effective dose ended up being just 150mgs, which was good since anything over 200mgs at once caused a headache. I took 150mgs 2-3 times per day and it worked really well for about three weeks. Then I noticed the effects to subside a bit so I just use it occasionally now when I have projects that really require concentration.
If you do a bit of research you'll find some pretty scary toxicity info relating to permanent testicular/kidney damage in mice. I haven't had any lab tests done but my plumbing and nuts feel fine
Needless to say, be careful.
Check out my
OTHER POST from May for more info if you want.