I took anaracetam for about 6 months earlier in the year. Same as piracetam but non-prescription and only 3-4hrs vs 8+ duration.
The effects were definitely there. More code, easier comprehension of code but also enhanced use of my vocabulary, clarity of speech.
I stopped taking it because I was worried it was affecting my short term memory. I felt like I was becoming more forgetful especially on weekends when I would take a break.
I'm not sure if this was just a readjustment of my baseline making me feel dumb when I wasn't taking any or if there has actually been damage done.
I'm now of the mind that it's probably better not to risk it until a drug is well established as safe.