Phenibut Capsules


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Sachet of 6 caps x 500mg Bottle of 120 caps x 500mg


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What is Phenibut?

Phenibut (less commonly known as fenibut or phenybut) is a natural derivative of GABA. GABA is the main inhibitory neurotransmitter in the brain. Phenibut is very effective at crossing the blood-brain barrier and binding to GABA receptors. This way Phenibut is able to reduce over-sensitivity of neurons to different neurochemical messages sent between areas of the brain. By being selective to only important messages unnecessary overstimulation is prevented. Phenibut reduces the rate of firing of hyperactive neurons to ensure a calming effect in the brain and around the body. For example, anxiety is caused by hyperactivity of the neurons, thus Phenibut plays a very important role in preventing this from happening.

Due to its effectiveness Phenibut is the best nootropic in the anxiolytic category. It is used to relieve tension, anxiety and fear. Phenibut is a well-known anxiolytic agent in Russia, but it is not registered medication in Western countries. In Russia it is used to treat various conditions including insomnia, anxiety, depression and posttraumatic stress disorder.

In addition, Phenibut serves as a cognitive enhancing (nootropic) and sleep-inducing (hypnotic) agent. Some people take Phenibut as a sedative, and find that it is much easier to fall asleep. The compound also improves a quality of sleep, thus allowing users to wake up feeling more refreshed.

Overall, Phenibut is a nutraceutical compound with one of the largest range of benefits (i.e., anxiolytic, nootropic and neuroprotective).

Key benefits:

  • Anti-anxiety effect
  • Reduced stress
  • Neuroprotective effects
  • Improved cognition
  • Sleep enhancer

Mechanisms of action:

Phenibut is known for having its GABA molecule attached to a Phenyl ring. This attachment helps Phenibut cross the blood-brain barrier more effectively. After crossing the blood-brain barrier, Phenibut binds to GABA (B) receptors and exerts a GABAergic effect. This way it makes alterations within nervous system. Phenibut acts as GABA-A/B receptors agonist. Phenibut also stimulates dopamine receptors and antagonises beta-phenethylamine (PEA). Phenibut becomes active 1 hour after ingestion and stays effective for around 5-8 hours.

Recommended dosage:

The recommended daily dosage is between 250 – 750 mg taken in 1-3 even doses. It is important to note that if you are a new user of nootropics you should begin with a lower dose and test its effectiveness.

Side effects:

When taken in lower doses, Phenibut is a safe nootropic. However, a prolonged use of Phenibut can develop tolerance and unwanted side effects, such as pain and numbness in limbs and drowsiness. Although, exceptionally rare there have been a few reported cases when patients developed signs and symptoms of Phenibut withdrawal. This was largely associated with very high dosages taken on a regular basis. Therefore Phenibut should not be taken more than 3 times a week as this would help to maintain an ‘on and off’ cycle without developing tolerance to it.

Compound facts:

Serving size: 1 capsule

Servings per bottle: 120

Amount per serving: Phenibut 500 mg

Other ingredients: Magnesium Stearate; Silicon Dioxide

This product is free from: Artificial Flavours, Colours & Preservatives, Lactose, Yeast & Gluten

Suitable for: Vegetarians and Vegans


  • Dietary products should not be used as a substitute for a well-balanced and healthy diet.
  • Store in a cool dry place, out of reach of children.
  • Do not use if you are pregnant or breastfeeding.


✝ These statements have not been evaluated by the Food and Drug Administration (FDA) The above products are not intended to diagnose, treat, cure or prevent any disease. You should consult a physician before taking a new product or a nootropic. This product should not be taken by pregnant or nursing mothers, people suffering from cardiovascular disease or those under 18 years of age.

Any studies cited here are not conclusive and are limited to their closed environment nature; they might not determine ones experience with a nootropic, due to a large number of unaccounted variables falling outside the scope of such studies.

The reviews available here are the opinions of contributors who may or may have not used these products, and do not necessarily represent the views of ThoughtFoods. These reviews represent one’s opinion and should not be taken as fact or recommendation. ThoughtFoods makes no warranty to the accuracy of information provided by these reviews.

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Phenibut Capsules Reviews

ThoughtFoods Phenibut Capsules

4(based on 6 reviews)

By on 22 Sept. 2016
It's the real deal
Took one, completely nuked my anxiety, stress etc. Wasn't expecting it at all, thought it was mostly hype. NOT AT ALL. I will say that regular use of this drug isn't recommended do to tolerance and withdrawal issue's, but every now and again this drug is a life saver. HIGHLY RECOMMEND++
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By on 28 June 2016
As described.
Was a little worried it had got 'lost in the post' after paying for special delivery, but arrived within 4 days and is the real deal. Customer service is a bit slow sometimes, but it seems if they don't get your message via live chat, they send you an email. 10/10 for the product - 7/10 for the postage - 8/10 for communication. All round good site.
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By on 11 Jan. 2016
Real Deal Holyfield
Seems like the real deal, working similar to neurotransmitter GABA (calming/relaxing). Good for those who find it difficult to relax or switch off.
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By on 06 May 2015
day to day mood improvment
I am extreamly impressed with this Phenibut supplement. Its effects are very noticeable when consumed. Taking a smaller dose, but with other suppliements such as caffine offers me a calm, focused feeling but still having plenty of enegy. With a larger dose, it certainly helps with sleeping and relaxing. As with many suppliments, you have to be careful to aviod building up a tolerance. My conclusion is that I have found this a strong, good quality product. My day to day mood has improved and I would reccomend to anyone wanting to improve day to day mood.
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By on 11 Apr. 2015
Sleep issues and anxiety issues, gone!
Phenibut is a quite fantastic sleep aid! Unlike your popular sleep aids, its doesnt give you the 'hangover feeling' or confused feeling as soon as you wake. Straight away the mind is clear, no brain fog, and I am ready to start my day It helped me also with my anxiety issues I have been facing over the past few months, although the lack of sleep before i started taking phenibut was probably a small factor into my anxiety issues. All in all, my review of this product is extremeley positive.
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By on 23 Oct. 2014
Great !
This is my favourite of the noopept/racetam range. Recommended A+
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