Table of Contents
Key Takeaways
- Phenylpiracetam is a powerful water-soluble nootropic that enhances cognition, memory, focus, learning, and physical stamina, with a stimulant effect.
- It is 20 to 60 times more potent than Piracetam due to the addition of a phenyl group, which increases its bioavailability and ability to cross the blood-brain barrier.
- Phenylpiracetam is banned in professional sports due to its performance-enhancing properties, including improved athletic performance and resistance to cold.
- It has clinical applications as a treatment for epilepsy and is used as a prescription drug in Russia and Eastern European countries.
- Phenylpiracetam dosage recommendation is 100 mg 2-times per day.
Phenylpiracetam ((R,S)-2-(2-oxo-4-phenylpyrrolidin-1-yl) acetamide, Phenotropil, Fenotropil, Carphedon, Fonturacetam) is a water-soluble nootropic in the racetam-class of compounds.
Phenylpiracetam was created by adding a phenyl group to Piracetam by Russian scientists in 1983. It was developed as a nootropic to boost cognition, and to improve physical stamina.
It turns out that Phenylpiracetam is very effective in boosting athletic performance. It provides significant stimulatory effects and helps you resist cold. Leading to a ban by the World Anti-Doping Agency from use by athletes in the Olympics and other professional sports.[i]
Russian cyclist Anton Reshetnikov was suspended in 2007 for 2 years from the International Cycling Union for using Carphedon.[ii] One year earlier (2006), Russian Olympic athlete Olga Pyleleva lost her silver metal for using Carphedon.[iii]
Carphedon is a brand name for Phenylpiracetam. Adding a phenyl group to Piracetam boosts the bioavailability of Phenylpiracetam. It easily crosses the blood-brain barrier and is considered 20 to 60-times more potent than Piracetam.[iv]
Neurohackers report that Phenylpiracetam enhances alertness, focus, memory, and learning. It reduces brain fog. And it provides physical stamina and cold tolerance while combating physical and mental fatigue.
Phenylpiracetam helps:
- Prevent Anxiety & Fear: Phenylpiracetam helps reduce symptoms of anxiety and fear. Unlike popular prescription anti-anxiety and anti-depressant drugs, Phenylpiracetam has no sedative action or other adverse side effects associated with these medications.[v]
- Neuroreceptors: Phenylpiracetam increases the density of acetylcholine (ACh), NMDA, GABA and dopamine receptors in the brain.[vi][vii]More receptors mean more binding sites for neurotransmitters that affect memory formation, cognition, sleep and mood.
- Cerebral Circulation: Phenylpiracetam increases blood flow in the brain. As a derivative of Piracetam, this nootropic has the same mechanism of action when it comes to blood flow. It suppresses the constriction of blood vessels allowing the freer flow of blood. More oxygen and nutrients get to brain cells boosting alertness, cognition, focus and mood.[viii]
Overview
Phenylpiracetam (((R,S)-2-(2-oxo-4-phenylpyrrolidin-1-yl) acetamide) was created by adding a phenyl group to the original nootropic Piracetam.
Russian chemists synthesized Phenylpiracetam in 1983 to boost the physical and mental performance of astronauts during space flight. It’s currently used by Russian cosmonauts on the International Space Station.[ix]
Phenylpiracetam combats physical and mental fatigue. It enhances memory, mood and focus. It facilitates learning and retention, reduces brain fog, increases alertness and boosts physical stamina and tolerance to cold.
Phenylpiracetam is also an effective treatment for epilepsy. This debilitating condition is caused by sudden surges of electrical activity in the brain. This temporary disturbance in messaging systems between brain cells can cause a seizure. Normal brain function gets halted or mixed up. This is where Phenylpiracetam comes in.
Phenylpiracetam has been shown in animal studies to affect Alpha and Beta brain waves.[x] Scientists haven’t quite figured out why it works, but Phenylpiracetam has an ‘anti-convulsive’ action in the brain. They did conclude after one clinical trial, “Phenotropil reduced the frequency of seizures and improved cognitive function in the absence of epileptiform EEG abnormalities.”[xi]
Phenylpiracetam is sold as a prescription drug in Russia and several Eastern European countries. In the United States, Phenylpiracetam is sold as an unregulated OTC research compound.
How does Phenylpiracetam work in the Brain?
Phenylpiracetam boosts brain health and function in several ways. But two in particular stand out.
- Phenylpiracetam as a stimulant. Phenylpiracetam increases the density of neuroreceptors. Studies have shown it increases the density of acetylcholine (ACh), dopamine, GABA, and NMDA receptors. This translates into more receptors for each of these important neurotransmitters to bind with and boost their effectiveness.
The increase in density of neuroreceptors likely accounts for Phenylpiracetam’s stimulant-like properties. Similar to Ritalin or Adderall, this nootropic increases the effectiveness of dopamine in your brain. Increasing alertness, decision-making capability, and cognition.
But unlike stimulants like Ritalin and Adderall, Phenylpiracetam does not come with any stimulant-like side effects. You should not experience any fatigue, rapid heartbeat, decreased appetite or irritability. Rather you’ll feel increased stamina, have more physical endurance and get smarter.
Just don’t try using Phenylpiracetam if you’re planning on being an Olympic athlete. It was banned several years ago because it’s too effective to be used in professional sports. We don’t want an unfair advantage now, do we?
- Phenylpiracetam decreases anxiety and depression. For similar reasons to how Phenylpiracetam works as a stimulant, it can also tame symptoms of anxiety and depression. Animal studies show that it increases the density of receptors for acetylcholine (ACh), GABA and NMDA receptors.[xii]
This increase in receptor sites for GABA, choline and glutamate affects levels of the calming neurotransmitters GABA and serotonin in your brain. Studies in Russia using Wistar rats shows that Phenylpiracetam floods your brain with the neurochemicals you need to chill out.[xiii]
How things go bad
As we get older, our brain chemistry and metabolism changes. And it seems these changes are affecting younger and younger people.
↓ Recall, reaction time and learning capacity declines
↓ Neurotransmitter levels decline
↓ Density of ACh, GABA and NMDA, and dopamine receptors decline
↓ Acetylcholine levels decline
↓ Cerebral blood flow declines
↓ Stamina and endurance decline
All of these changes are contributing factors to age-related cognitive decline. Early signs of these effects can be seen in poor decision-making, difficulty learning, and even recalling simple things like an important appointment.
But even if you’re not concerned with the signs of aging, Phenylpiracetam can help.
Phenylpiracetam benefits
Phenylpiracetam is highly bioavailable when used as a nootropic. Once digested it quickly gets absorbed and crosses the blood-brain barrier.
Phenylpiracetam modulates neuroreceptors. It’s been shown to increase the density of receptors for GABA, NMDA, dopamine and acetylcholine.
More neuroreceptors result in more of each neurotransmitter being able to bind to neurons. And affect alertness, cognition, memory, recall and mood.
Phenylpiracetam has a positive effect on physical performance by increasing endurance, and reducing physical and mental fatigue. In fact, these effects are so potent that Phenylpiracetam has been banned from professional sports by the World Anti-Doping Agency.
Phenylpiracetam has been shown to act as a stimulant. But unlike pharmaceutical drugs, it does not affect your cardiovascular or respiratory system. And does not have the side effects of jitteriness, restlessness or irritability like regular stimulants.
Phenylpiracetam is also noted for increasing your threshold to tolerance for cold.
How does Phenylpiracetam feel?
Many neurohackers say Phenylpiracetam is the strongest nootropic they’ve ever experienced. It’s highly bioavailable and you experience the effects within 30 minutes of taking it.
Phenylpiracetam users say it increases concentration, motivation, memory, physical endurance, and tolerance to cold. Learning is quicker and stress is reduced.
People report that learning and processing information becomes easier with Phenylpiracetam. You’re not re-reading sentences and paragraphs trying to understand them.
Short and long-term memory improves. Motor skills improve so you’re typing faster and more accurately.
Those dealing with depression report a decrease in depressive symptoms. More confidence helps in social situations and conversations are easier.
Productivity rises and you assume a “get it done’ mentality. Procrastination is a thing of the past.
Phenylpiracetam is a popular pre-workout supplement. It increases your endurance and reduces both physical and mental fatigue. And if you’re one of the unfortunate ones who live in a cold climate you’ll find that your tolerance for cold is better.
Phenylpiracetam Clinical Pharmacology & Research
Phenylpiracetam was developed in Russia in 1983. And the majority of research done with this nootropic has been conducted in Russia. Published in Russian medical journals in Russian.
So we have limited clinical trial data to draw on. And like many nootropics we rely on nootropic user reviews. The following is two samples of clinical trials I was able to find that have been translated into English. And published in Western medical databases.
Phenylpiracetam Improves Cognition
A study done by Russian researchers investigated the effects of Phenylpiracetam on cognition. 99 adults aged 40 – 60 suffering from cognition deficits due to surgery or brain trauma were enrolled in this study.
Volunteers were given 200 mg of Phenylpiracetam daily for 30 days. The researchers found that those using the nootropic showed a significant improvement in motor coordination, higher brain function, memory, attention and counting. And a reduction in both anxiety and depression.[xiv]
Phenylpiracetam Boosts Cerebral Circulation
Researchers in Moscow recruited 400 patients suffering from ischemic stroke. This is the most common type of stroke where blood vessels carrying blood to the brain are blocked by a blood clot.
Half of the group received 400 mg of Phenylpiracetam daily for a year. The control group got a placebo.
The research team found that the group who received Phenylpiracetam experienced a significant restoration in cognitive functions, and resumed daily activities. Far better than the control group who took a placebo.[xv]
Phenylpiracetam Recommended Dosage
Recommended Phenylpiracetam dosage is 100 mg twice per day. One Phenylpiracetam dose in the morning, and one in the early afternoon.
Don’t use Phenylpiracetam later in the day because its stimulant effect can cause insomnia.
You can develop a tolerance to Phenylpiracetam, so consider taking it only on days when you need the extra focus. Or try cycling it one week on and one week off.
Phenylpiracetam Side Effects
Phenylpiracetam is non-toxic. So is considered well-tolerated and safe.
As with many of the racetams, Phenylpiracetam can cause headaches because it boosts the use of acetylcholine in your brain. Choline supplements like Alpha GPC or CDP-Choline can help you avoid this side effect.
According to an animal study, Phenylpiracetam was reported to reduce body weight gain by a significant amount in obese rats. However, since rat brain neurotransmitter receptors differ from humans, it is impossible to say for sure if Phenylpiracetam has similar metabolic benefits in humans at this time.
Tolerance is a problem with Phenylpiracetam and builds rather quickly. Commonly reported dosages sit at around 12x that of Noopept. It will soon lose its effects if used in excess. So try using Phenylpiracetam only when you need extra cognitive performance, or before a workout. Or try cycling it one week on and one week off to avoid tolerance.
Many neurohackers find that stacking Phenylpiracetam with a choline supplement boosts the effect even more with improved memory and cognition. And this is supported in several research studies.
Where to buy Phenylpiracetam
Phenylpiracetam is sold in tablet, capsule and powder form. Tablets and capsules are usually 100 mg each.
You can currently buy Phenylpiracetam from Cosmic Nootropic – Phenylpiracetam. The company sells brand name and patented forms of many of the racetams and is highly recommended.
Nootropics Expert Recommendation
Phenylpiracetam 100 mg 2-times per day
I recommend using Phenylpiracetam as a nootropic supplement.
Your body does not make Phenylpiracetam on its own. So to get its benefits you must take it as a supplement.
Phenylpiracetam is especially helpful for those suffering from ADHD or brain fog. This nootropic has a stimulant-like effect similar to that of pharmaceutical stimulants. But without the side effects of increased heart rate, irritability and restlessness.
Phenylpiracetam can boost athletic performance. It has been shown to improve physical performance, increase stamina and endurance. And even provides cold-weather resistance.
Phenylpiracetam is also particularly useful to students and executives who want to boost mental function including alertness, cognition, clarity, focus, learning and memory. This nootropic also has anti-depressant and anti-anxiety benefits.
Studies have shown that Phenylpiracetam can be effective in relieving the frequency of epileptic seizures in those dealing with epilepsy. It even compliments some epilepsy medications.
You should use Phenylpiracetam with a good choline supplement like Alpha GPC or CDP-Choline. It helps boost the effectiveness of neural acetylcholine, so demands the presence of more choline in your brain.
You can safely boost daily intake of Phenylpiracetam to 400 mg. But be aware that tolerance to the effects of this nootropic build quickly. So we recommend using Phenylpiracetam only on days when you need the extra cognitive ability. Or cycle the use of this nootropic one week on, and one week off.
You can currently buy Phenylpiracetam from Cosmic Nootropic – Phenylpiracetam. The company sells brand name and patented forms of many of the racetams and is highly recommended.
Join The Discussion - 117 comments
Jim johnson
September 9, 2021
Dave
I have tried numerous books. Only two give me the stimulus, motivation I like. However both tend to leave me in slightly depressed lethargic state next day. Tyrosine does same thing. Is this maybe a dopamine hangover? Ty for any comment.
Jim johnson
September 9, 2021
Oops. Not “BOOKS”; noops
David Tomen
September 10, 2021
Jim, dopamine must be in balance with serotonin. If all you are doing is increasing dopamine then you are likely also suppressing serotonin. You can counteract this and bring serotonin back into balance with dopamine by using 500 mg L-Tryptophan before bed.
Crystal
June 6, 2021
Hello Mr. Tomen,
Thank you for your excellent writing! Your site and videos have given me a wealth of info for my nootropic journey!
I’ve used natural/herbal nootropics for some time. Bacopa, choline, amino acids, B vitamins, etc. Racetams are fairly new for me but I have high hopes so far.
I’ve been on piracetam consistently for about 6 weeks; 800-1000gm 2-3 times a day. Plus Alpha GPC. I feel I have a baseline built up there, and modest but noticeable improvements.
I decided to try one of the “big guns” of 100mg phenylpiracetam one day. I was *almost* too stimulated but very productive. I took the next day off of it, then tried again the following day. Virtually no change or benefit that time. Now, I know myself well enough I should have waited another day or so. I build a tolerance very quickly across the supplement and compound spectrum. I can’t even take the ibuprofen two days in a row without building tolerance.
I waited a week to reset tolerance and tried again. Same “non” result or benefit. I tried waiting two or three days then tried again at 200mg. Same thing.
My question is (fully understanding we are all individuals) have you heard of folks have good results only one time then never again regardless of modification to dose, stacking, time between, etc.?
Again, I know I build tolerance quickly and this is all anecdotal, but this seems extreme even for me. I thought I was onto something good to have in my “toolkit” after the first successful day, and I’m hoping to work out a way to fit phenylpiracetam into my schedule.
*I also tried aniracetam, and while I like the cognitive effect, it causes digestive upset so that one is likely not a good candidate for me.
Thank you so much!
David Tomen
June 6, 2021
Crystal, I hear of someone every now and then who experiences the benefit of something new. But only once never to get that benefit again.
I have no ‘technical’ reason why that can happen but have found through experience that some supplements are just wrong for a person. Either you react badly or it provides zero benefit. My advice is to put a check mark beside that one because you tried it. Then move on and try something else.
John
September 16, 2024
I 100% agree that not every supplement or compound is good for everyone! In fact if your not low in a compound or your cellular metabolism is healthy than a lot of compounds be they vitamins or racetams could likely have zero effect on you. One person might barley respond to a compound and another person might be a super responder.
I came her looking for people that have been using this compound as recomended by the Russian that invented it as recomended long term and to here actual observations!! So far I have not found anything like that!
Even clean pure water can kill you if you drink to much of it! 99.999% of humans will never have to worry about pure clean drinking water killing them! It is good to know though that even too much of a good thing can be bad!
Hebron
May 1, 2021
Would cycling Phenyl one day on one day off work? Or one on two off?
Thanks Mr Tomen, you’re the man.
David Tomen
May 2, 2021
Hebron, it depends on how you react to it. For example, there are a couple of supplements that I use every day with no problem. You may grow tolerant to it quickly. Each of us is different so you need to test this.
Try using it for 5 days then two days off and see how that works. The try it every 2nd day and see how that works.
Ethan
April 11, 2021
I have a question. Thank you btw for responding to my TAU comment on your UMP thread. Defiantly going to stick with UMP.
So Ive tried a range of Racetams. Three to be exact.
Oxiracetam, Noopept and Phenylpiracetam. Combined with 250mg of citicoline with each dose.
I respond really well to Racetams like too well. No headaches, zero sides.
I made the mistake or at lease I feel I did in the sense that I tried Noopept first which I believe is the strongest. So When I tired the Oxiractam and Phenylpiracetam I felt nothing. (Did this experiment Monday, Wednesday and Friday)
30mg Noopept & 250mg Citicoline Monday was incredible.
800mg Oxiracetam Wednesday & 250mg Citicoline Wednesday I may have felt it but it was like background noise if i did. No negatives just no obvious boost.
300mg Phenylpiracetam & 250mg Citicoline and I felt nothing. I even felt cold internally which was strange as its supposed to have the opposite effect. I dosed Iodine shortly after in case it was an thyroid issue (which i don’t have).
So I guess my question is are Racetams more for once a week? Did my brain build tolerance in one dose? The first Noopept dose was incredible I swear I could feel it correcting my brain.
Im i being unreasonable and dealing with the law of diminishing returns? Or did I balance my neural network first dose so I don’t feel a “high” now. Kind of like how people with Dopamine dysfunction are prone to nicotine addiction due to the sky rocket and plummet effect rather then a dopamine dominant individual who smoke and barley notices an effect?
What’s a good Noopept stack?
David Tomen
April 15, 2021
Ethan, you have just discovered what we all eventually learn and that is not every nootropic will work for you. I suggest being grateful that you discovered Noopept and that it works for you.
From the sounds of what you are saying you can forget about Oxiracetam and Phenylpiracetam. But don’t feel bad because they don’t work for me either. I’ve had great success with Aniracetam used daily for years. I’m not suggesting it will work for you too. But it may.
The best Noopept stack is using it with Alpha GPC or CDP-Choline and a healthy fat like unrefined coconut oil or MCT Oil.
Awi
March 12, 2021
Hi David,
I’m 37 yo, recently try phenylpiracetam, and during this trials, always with Alpha GPC.
1 capsule is 100mg.
I tried 1 capsule-> sleepy drowsy. the only benefit i can sense Im cold resistance. However it is giving slight bad mood, like no real reason sad or worry.
on other day, tried 2 capsules, different 2 hours from each –> sleepy drowsy, and still it is giving slight bad mood, like no real reason sad or worry.
other day, (4 days after the 2nd trial day) tried directly 3 capsules and it was help to focus like 3 to 4 hours, then that’s it. –> let’s call this day as “3rd day/time trial”
then 7 days after the “3rd day/time trial”, I tried :
11am -> 3 capsules -> was Okay, it give me the engaged sense with my computer task (for 3 to 4 hours MAX)
3pm -> I took another 1 capsule, as it feels like the benefit slower down.
4pm -> I just took another 3 capsules (I’m on my day off, and really just wanna try, plus most people said it is still in safe zone of total below 750mg of phenylpiracetam in a day), i took this last 3 capsules, just wanna know if I can use phenylpiracetam for 8 to 10 hours focus works when I need it next time.
4.30 to 5pm I went to do slight gym.
Then exact 6pm, my eyes are very very very heavy sleepy feel, and weirdly (not in a good sense), MY HAND AND FEET feel COLD as if freezing type (room temperature was only 26 celcius degree–> this can be said as normal room temp). –> this is surprised me in not a good way …
BUT However, the positive side is: zero feeling gloomy, zero sad or zero worry. (not like the trial day 1 and 2). In fact , I did sense positivity mindset= the overall mood is good.
Note: in this trials, I ALWAYS pair with Alpha GPC, drink coffee+low fat milk without any sugar, Plenty very plenty of water, and less eat/food to a degree I can say on empty stomach and Always have enough sleep ( I kinda lucky can have 8 to 9 hours adequate sleep everyday). And I did not mix with any other supplements. That’s it, only Phenyl + Alpha GPC and coffees milk zero sugar.
My questions to you are,
Q1: What makes me sleepy and very drowsy on some dosage of Phenylpiracetam? I could not find better article or solution for this. it makes me really wonder why.
As I never get any insomnia and I never get any headache (maybe thank you for the Alpha GPC). However, I am really annoyed with my this sleepy- eyes heavy experience, that this phenylpiracetam makes my eyes heavy and sleepy (only the eyes). The intention im taking this is to help me alert and focus on my data analysis study course online.
Q2.
I know I get good on 3 capsules, but it only helps me 4 hours max, how can I do my dosage to extend my engagement of focus study and work to at least 8 to 10 hours?
I have zero problem with sleep time, I have problem to stay awake/alert/focus to absorb study information.
PS: My friend, used the same capsules, 3 + 3 capsules for 2 days in a row, and he never got the sleepiness. So, I am sure this is not because the phenylpiracetam that I have is bad quality.
So please, kindly help me how to combat the sleepy/heavy/drowsy eyes when on phenylpiracetam? and what is it actually that causing sleepiness on phenylpiracetam?
Please, your advise is greatly appreciated, because very lack articles discussing about the side effect of phenylpiracetam which makes you sleepy/heavy eyes.
Very waiting for your response .. Thank you David…
David Tomen
March 13, 2021
Awi, sleepiness when using any of the racetams is often caused by insufficient acetylcholine.
The half-life of Phenylpiracetam is 3 – 5 hours. In other words if you take Phenylpiracetam at 8 am it’s gone by noon. The only way to keep it in your system is taking a second dose about 5 hrs. after the first dose.
Katie
February 15, 2021
Hi Dave! Your information has been SO helpful to me on my journey. Phenylpiracetam has worked AMAZING for me. (I have been diagnosed with significant ADD, and deal with also chronic fatigue and depression). It’s helped more than Wellbutrin, Adderall or Vyvance.
I’m taking 100mg Phenypiracetam + 250mg Citicoline + 200 mg sulbutiamine, or sometimes 200mg Phenylpiracetam +300 mg Citicoline. I cycle it, not taking it everyday and take several weeks off at a time to prevent tolerance.
The problem I keep running in to is that after couple days, I get have extreme fatigue and muscle weakness. It’s like something is building up in my system. It takes a couple days to clear out. I’m wondering if it’s the Citicoline? I felt like Alpha GPC did the same. I do have some genetic mutations that create issues with processing certain substances.
Any suggestions for an alternative substance or dose to try? I really hope to continue to keep Phenylpiracetam in my rotation, but whatever is getting messed up completely debilitates me for a couple days.
Thank you!
David Tomen
February 16, 2021
Katie, if you are experiencing the same symptoms with Citicoline and Alpha GPC that is your common denominator. I had another guy mention the same thing last week. And he used Centrophenoxine instead of either of those choline supplements. And said it worked well for him.
Joe
February 10, 2021
Will taking phenylpiracetam show a false positive “amphetamine” for routine employee drug test?
David Tomen
February 10, 2021
Joe, I suppose it depends upon the test that your employer uses. If you are in professional sports then yes it will be detected.
But if you’re a truck driver or accountant it’s unlikely it’ll register as an illicit drug. Because it is not an amphetamine. Nor does it act like one.
RadioGaga
January 30, 2021
Hello Mr. Tomen,
(First time ever comment/poster)
Hopefully the start of 2021 finds you well. I have just started my research on nootropics and I plan to consult with my psychiatrist. But I am wondering if you think I could take this phenylpiracetam with Wellbutrin? (I take 150mg SR once daily). My concern when I’m reading these things is that they seem to almost operate the same way? Or similarly. But the idea of me doing some kind of crazy damage or causing some kind of psychosis in my brain is scary. I do have a daughter who needs me LOL But I will also read your article for the ADD stack, I’m just wondering what your thoughts would be about how they would operate together? I know from reading other comments you tend to shy away from taking the prescribed meds with some of these others. Hopefully I’m making sense with what I’m trying to say.
Thank you for your time and, if you’re not still traveling, hopefully you’ll be able to resume doing so with improvements from this pandemic! Stay safe and thank you for all the work you do to put this knowledge out there.
David Tomen
January 31, 2021
RadioGaga, love your username and may long live Freddie Mercury!
I caution you about using Phenylpiracetam with Wellbutrin however. Because there is no way of knowing how this combo will work. I think based on the mechanism of action for Wellbutrin and this racetam that you’ll end up with unexpected consequences. And they won’t be good. Because Phenylpiracetam increases the density of dopamine receptors.
A much safer option is using the nootropic stack I describe on this page: https://nootropicsexpert.com/best-nootropics-for-adhd-add/. Because that stack was designed to support the use of prescription stimulants. And has over a decade of real-world testing and use by our community.