Rated 4.83 out of 5 based on 12 customer ratings
12 reviews

$29.98 From: $29.98

50 grams

  • Reduce Anxiety
  • Reduce Stress
  • Heighten Mood
  • Improve Sleep

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Maximum Usage: 500-1500mg
Directions: Phenibut hcl is water soluble. This product is sold as a chemical not for human consumption and any usage is a decision based on your own research.  Do not exceed recommended usage.  Do not ingest if you are pregnant/breastfeeding.  This product can be dangerous especially when mixed with other substances like alcohol, please read warnings. Extremely rare side effects may include allergic reactions. Consult a doctor prior to using. By acquiring our products, you agree to our terms & conditions.

Phenibut (fenibut, phenybut) is a derivative of the natural neurotransmitter, GABA. GABA is not a nootropic neurotransmitter and actually has inhibitory qualities which can produce tranquilizing and anxiolytic effects. Some people claim that phenibut has nootropic effects however there is limited scientific evidence to support this. It is often included in a nootropic stack for its anxiolytic and mood-lifting qualities.

Method of Action

It carries the GABA structure with the addition of a phenyl ring. The addition of this ring allows for it to cross the blood brain barrier. GABA by itself cannot cross the blood brain barrier and remains completely ineffective as a stand-alone supplement.  Sold in the hcl form, water solubility and product stability is increased.

It binds to the GABA b receptor sites. Drugs and substances such as Baclofen, GHB and alcohol bind specifically to these sites. Baclofen, a prescription muscle relaxant shares a similar chemical structure to phenibut.

Generally, phenibut shares similar pharmacological effects as GHB, Baclofen and alcohol. Higher dosages can lead to an “intoxication” that may inhibit the central nervous system. Lesser usage can yield calm-inducing and relaxant effects. Mixing with other GABA agonists can cause synergistic and cross-cumulative effects that can be dangerous, and so this should be minimalized or avoided altogether.

Potential Phenibut Benefits

Phenibut can have a host of benefits when used properly. On the flip-side, using improperly can result in a negative experience that may turn one off from the substance for good. Using the substance for recreational purposes (to get high) will likely lead to a negative experience that can be dangerous and is not recommended.

The benefits claimed by many often relate to calmness and a reduction in anxiety.  It may also help to reduce stress and encourage a better sleep.  Finding a “sweet spot” where one can feel the full effects of relaxation without impairing their mental function is how most nootropic users take phenibut. Phenibut should not be used every day and cycled strategically in times of need.

Below and some of the most common benefits experienced with phenibut.

  • Relaxation
  • Anxiety reduction
  • Sleep induction
  • Reduced stress
  • Improved mood

Benzodiazepines vs. Phenibut

Benzodiazepines like, Ativan, Xanax and Valium also work on GABA receptors however they selectively target GABA a receptors. Some may argue that phenibut also affects the GABA a receptors at higher doses however, this is generally not accepted in the scientific community. Mixing with benzodiazepines can have life-threatening consequences so avoid it.

Cross tolerance may occur between phenibut and benzodiazepines however this is likely to be minimal or even non-existent due to the differing receptor targets. Both substances can cause down-regulation at their respective targets and therefore, both are prone to tolerance and addiction. Some have compared phenibut withdrawal to benzodiazepine withdrawal.

Safety & Possible Side Effects

This is a substance that can have excessive side effects and safety concerns if used improperly. It is generally considered much safer at lower usage.  It shares similar side effects with other GABA substances. Below is a list of common ingestion side effects. These side effects will likely increase at higher usage.

  • Nausea
  • Dizziness
  • Lowered inhibitions
  • Gastrointestinal distress
  • Memory reduction
  • Euphoria
  • Lethargy
  • Tiredness

Phenibut Warnings

Mixing phenibut with other GABAergics can cause more severe consequences. Respiratory depression can be a serious side effect that may result in death. Mixing phenibut with GHB and certain benzodiazepines may cause the respiratory depression which can cause unconsciousness and death. Mixing phenibut with alcohol can increase the chance of blackouts and unconsciousness. Phenibut should not be used in people suffering from Parkinson’s disease.

Typical Usage

Dosages  may vary depending on the individuals GABA tolerance and sensitivity. Usually dosages range from 500mg – 1500mg. Ones with higher dependence to GABAergics may have an easier time experiencing the phenibut effects without noticeable negative side effects.

One thing to note is that it can take much longer to feel the effects than other substances. Sometimes it can take up to 4 hours to feel the full effects.  It’s half-life is apparently 5-6 hours however there are reports of residual effects up to 24 hours after. Do not re-use anytime before the 4 hour mark. There are also reports of “hangover” comparable to alcohol when larger amounts are taken. Phenibut should be taken with food but eating a heavy meal may slow down absorption.

These statements have not been evaluated by the FDA.  This product is not intended to diagnose, treat, cure, or prevent any disease.

Additional information

Weight 75 g
Dimensions 6.75 × 4 × 1.6 in

50, 100


  1. Rated 5 out of 5

    (verified owner):


    I absolutely love it. Caution! Do not do too much of it, because the hangover will be worse then alcohol. What I do is use 1-1.5 scoop first thing in the morning when I wake up on empty stomach (no calorie drink) wait about 2 hour before meal. Then maybe in about 7 hours another dose. Also, do not lay on the bed, because that will put you to sleep. Lastly, I heard it not wise to take it right before the bed, because the weakness will still appear after waking up.

  2. Rated 5 out of 5

    (verified owner):


    Like another reviewer, I bought Phenibut as a substitute for Gabapentin. Its advertised positive effects are accurate.
    I especially have noticed greatly-improved sleep when I take it before bedtime. Also, it’s largely able to eliminate my anxiety for 8+ hours when taken early in the day. This is awesome when I know I have a long day of working and/or studying ahead of me, as my anxiety usually reduces my general productivity quite a bit. About 1 gram of phenibut, combined with a cup of coffee every couple hours, ensures I’ll have a great day.
    Addicts should be wary of this drug, however, because daily use can easily lead to dependence and withdrawal.

  3. Rated 5 out of 5



    Loved it, this is exactly what I was looking for. Keeps anxiety at bay for the day and helps as a perfect sleep aid at night.

  4. Rated 5 out of 5



    Love, Love and Love this product. I only use it once every other week, I take 3 grams on an empty tummy first thing in the morning, have a cup of coffee and I wont eat for at least 2 hours after taking it with water. Whenever I am feeling low, bummed out, down or depressed I take this and with-in the first hour I feel normal, happy, calm and just good. Highly recommended… I would not use it more than once or twice a month and no more than 2-4 grams. Enjoy!

  5. Rated 5 out of 5



    Start SLOW cause this stuff is very, very clean and the active dose/effects varies -immensely- person to person! I’m a 180lb man, very experienced with this kind of thing, and anything more than 0.5-0.7g (2 level scoops) blasts me into a state well beyond my ability to function while making the experience much less (not more) fun. I’ve watched much smaller people do multiple grams (6+ scoops) of this stuff and claim they feel “relaxed but not buzzed.”
    Its definitely worth mentioning that this is much more like a prescription drug than a recreational one – excellent for getting a functional/silly, pleasant/erotic and engaged/restful state of mind or treating something like insomnia or anxiety. In other words, this works ideally for maintaining a state equivalent to 1-4 drinks over the course of a day or two…if you’re looking to go into “what did I DO last night?!” territory these aren’t the droids you’re looking for.
    CAUTION: The half-life of this stuff also varies person to person. While my understanding is most people have more or less completely metabolized their dose in 24 hours, it takes my body 50+ hours before I stop feeling it. Discover your own rate of elimination and plan accordingly.
    Also, I can definitely see the potential for an unregulated habit of this stuff to get wayyy out of hand. Make a dose schedule and stick to it (I do it generally 1-2 times/month, with a strict 1/week limit). Remember, this is a GABAergic! Google GHB withdrawl if you need to gain a healthy respect for the implications of GABA receptor down-regulation. If you begin to experience withdrawal symptoms, you should drop everything and work on an exit strategy (which ideally involves suffering cold turkey, progressively smaller doses if that’s not possible). If you can’t or won’t follow these rules, you will have a very, very bad time and would do well to avoid it altogether.
    All and all, if you have a proper respect for it, this is an immensely useful and powerful tool.

  6. Rated 5 out of 5

    (verified owner):


    Great stuff! Very effective GABA activator and many times substituted for benzos. Great help with anxiety and sleep quality. May become somewhat addictive if abused. Goes nicely with Theanine imo. My girlfriend loves it!

  7. Rated 5 out of 5



    I’m fairly experienced with phenibut and take it for panic attacks and generalized anxiety disorder. Anywhere between 4 to 6 scoops a day which is probably about 1.5 to 2grams.

    With that being said it’s a great product in helping my symptoms. I’ve been panic attack free for over three months now. Tolerance does build to this so just something to be aware of.

    My first times trying it produced a sense of relaxation, heightened sexual arousal, and a lack of anxiety that is always racing in mu mind. This supplement takes care of all thar. I’ve been able to maintain the same dose while achieving medicinal benefits. So, just because you feel like you need more you probably shouldn’t take more.

    Takes about two hours to kick in but when it does you’ll know. Treat this supplement with respect and you’ll have good results. Not to mention I’m sleeping a lot better than I ever was. It doesn’t mess me up like alcohol or hard drugs which is why I like it. For those of you who suffer from anxiety and need a solution this is a good fix. Take it from someone who suffered for a while. Cheers.

  8. Rated 4 out of 5

    (verified owner):


    A tangy Nootropic that makes you downright frisky

    Phenibut is an ideal social smart drug for 2014 Jonathan, but I’m not sure if it would have been for say 2008 Jonathan. Now I’m very mindful, especially in social interactions; I’ve trained with technology like Dual N-Back and the emWave2 to be very present. I’ve actually spent the majority of this year completely sober, see my article about partying sober for +6 months in South America’s #1 vice city. Five or six years ago was a different story, I drank quite a bit (my cocktail of choice was Patron Redbull), smoked cigarettes and used recreational drugs from time to time – I was kind of your average intoxicated douchebag. Phenibut is a pretty subtle effect, you would have to do a lot to get something resembling the mindset you get from alcohol or MDMA. If I had done Phenibut 5 years ago, I don’t think it would have satisfied my hedonic set point, I would have probably been pretty bored with it. Now it’s awesome though, it gives me an extra boost of social confidence free of intoxication.

    Phenibut is a a gabergic drug, please see my other video specificity on the mechanisms of action and studies that have been done on Phenibut.

    I felt very social and frisky on Phenibut… I would describe myself as unfiltered, I found myself doing silly things, like making a tower out of cups and a paper airplane and saying smart ass stuff to my friends.

    I can tell when it kicks in because I enjoy music a lot more, for example…
    Not long ahoI walked into a bar here in South America that was blasting annoying Colombian folk music. I’m not drinking alcohol I don’t know how long I can hang out here and listening to this twangy latin music blaring out the speakers.
    Maybe 30 minutes later a singer came on and started singing salsa songs and it was awesome. I was able to genuinely enjoy the music sober that I usually can’t stand.

    If you are the kind of person who works soul destroying hours, puts in +10 hours a day grinding and then you have a social commitment or a date and you have trouble transitioning to that social mood, consider Phenibut.

    I found I need to do about 3 little spoonfuls to get the desired effect, for me this feels like about two and half beers on an empty stomach for about 3-4 hours.

    This 50 gram bag costs less than $25 dollars so it’s a pretty awesome value compared to alcohol. I would do about a gram each night, so at that rate it costs less than a dollar night and you have no productivity robbing hangover the next day.

    It has a nice viscosity and absorbs very equally in water and actually has a nice tangy taste, unlike a lot of smart drugs you could actually drink it leisurely.

    Finally, sleep is awesome on Phenibut, I always slept a little extra on it, if you want to be able to go out have a super fun night with your friends in a loud place, then go home fall right asleep and wake up feeling really well rested.

    If I have a couple of really stressful days in row where I’m spending +8 hours a day on the computer tackling big problems or projects, it really effects my sleep, it takes me an extra 60-90 minutes to fall asleep. If I do about 750 milligrams it makes me just relaxed at the end of the day and I can fall right asleep.

  9. Rated 5 out of 5



    I highly recommend this product. They had a decent delivery time, and the Phenibut was great quality!

  10. Rated 5 out of 5



    Helped my sleep tremendously. No side effects in the morning either.

  11. Rated 4 out of 5

    (verified owner):


    Tried Phenibut as substitute for Gabapentin, prescribed off-label for sleeplessness due to working several years on night-shift. While I cannot swear to any noticeable “buzz” it without question helped me sleep. Dreams are vivid, and I awake rested but with less of a hang-over than with Gabapentin. I take 1000-1500 mg, mixed in water. Tastes like sour-gummy-flavoured water! Kinda nice actually. I also took a dose and had a couple of beers on a rare sunny winter afternoon a couple of weeks ago. Best day I’ve had in months! Again, I can’t definitively say there was any particular “buzz” associated with it, the way I have heard some claim, but I felt real mellow and fine. My wife tried it as well. She felt nothing at 500 mg but said she got a nice mellow feeling from 1000 mg. Like anything, it works differently for different people. As with other PeakNootropics products, I recommend their Phenibut.

  12. Rated 5 out of 5

    (verified owner):


    definitely works as advertised… more of a powdery consistency rather than the salty consistency from other vendors.

    be careful! its a strong one!

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