For me it worked almost exactly as described in original manufacturers manual. It worked very well for few weeks. I was taking scoop twice a day ~7mg or less and sometimes only once a day. I was suddenly recalling some old memories. Time seemed to run slower while more was done. Sleep was better. I felt so good, that i forgot or didn't need/want to take it. Less is more works for this one...
Then after few weeks i stopped (as manual says) and tried just occasionally(usally ~5mg). I noticed, like many others that it can make you irritated or angry by your annoying environment, especially if dose is too high(over 10mg). It also has some effect on sex(not always as bad as some reported). Maybe something has to do with u/n shaped responses? Short memory is not good on it. It's hard to read detailed material immediately after taking it, but probably nice for meditation or mind wandering.
Then tried it few times on days when i was also taking taurine (1-5g) drinking some nice green tea (0.5-1l) and chewing nicotine gum. Taurine alone, made me calm and focused while stil being sleepy. Something like i needed more oxygen.
Few days later i started to get weird headache (tension one, behind ears to the neck direction) and later i noticed i hear some weird low frequency noise(like 50Hz buzz). At first i thought it's heavy trucks from near road here, but then with ear plugs i realized it is inside my head. I only heard it when i was calm. (I thought maybe my brain somehow learned background noises..scary thoughts...) If i moved my head weird tinnitus was gone.
I stopped taking everything except normal food and after few day i was back normal.
I was curious what happened so i tired later few times one by one and combined. It seems that tension headache comes from taurine and/or green tea. Green tea alone is ok, but long time after that i didn't feel the need for it. I didn't try taurine any more after that combination and maybe it's the best to avoid it in higher amounts. Occasional energy drinks alone didn't induce similar head aches, but i didn't mix them with anything.
Weird tinnitus was from noopept. Even when used less than 5mg month later. Maybe i should wait much more like it says in manual, but I'm not sure if it's worth. I also eat food (eggs, pasta...) with spices like black pepper, garlic, chili...so those could also interact.
Anyone else hears low frequency sound on noopept?
Recently i tried sunifiram, 1 scoop, 5mg or less once a day, not every day. Taking it at first felt like 1s lasting panic, but then was gone. Maybe placebo, scared from unknown. I did not feel much else except like being in some serious calm normal feeling state. Real positive effect was after 2 or 3 days when i realized i sleep very well, 8h straight(but not at real world's normal time frame: ~4h-12h). A lot of dreams. It also made me to take short refreshing, full of dreams naps during the day. Time was running slow and more was done. Better then noopept in that sense. It has similar effects to nicotine and noopept regarding to sleep and dreaming, so this is probably related to ACh. Nicotine for example makes high frequency tinnitus, cold feet and nose...(i avoid it). Sunifiram seems to make head calm, almost no sounds inside. Probably very good for study, work, but you still need to motivate your self. When you feel good, your mind might trick you and you might start to procrastinate and do stupid useless things
I didn't try higher doses of sunifiram, or take more then once a day nor i want to. I didn't take any other stuff except regular food, occasionally coffee and green or chamomile tea(not together, few hours apart).
I don't think any of mentioned substances made me any smarter or is worth taking every day. Only when you really need it. Just like prescribed medicine to fix your imbalances. For example like manufacturers manual of noopept says or less.
Sunifiram is probably best ~5mg few days in a row, or every other, third day, or as needed. When you wake up(or 1-2h later) and feel great you probably don't need it.
Taking noopept after i woke up and felt great ruined good feeling for me and made me more closed for outer world and sometimes induced circle of thoughts i did not want to think about. Usually about problems that needed to be solved but could be done only at some later time. So does eating food when not really hungry. It can make you sleepy. Listen to your stomach, not your fooled brain
Physical exercise once or twice a week is very good for mind :-)