What Are The Effects Of Phenibut?

Updated May 5, 2024 by | Reviewed by William Gallagher, MNeuroSci
(Estimated reading time: 3 minutes)

If you’ve been in the nootropic or bodybuilding space for any length of time, I’m sure you’ve heard of Phenibut.

It is a common ingredient in many nootropic supplements and is reportedly highly effective at combating anxiety and promoting relaxation.

This article will help you understand what Phenibut is, what effects it has on the human body, and how best to use it to achieve the best results.

Phenibut is a chemical derivative of the neurotransmitter GABA (gamma-aminobutyric acid), which plays a critical role in regulating neuronal signaling in the central nervous system.

The aminobutyric acid family also includes taurine (which can be found naturally in meat sources) and glutamine (a major component of skeletal muscle). Both are important for mental health.

Researchers have noticed that phenibut is highly effective at relieving anxiety and depression, and promoting relaxation. Many users have reported that it helps them sleep better, focus more, and generally feel better.

Effects Of Phenibut

Some people report feeling groggy or nauseous. Dilated pupils, memory loss, and decreased libido may also be present.

Phenibut can cause drowsiness and dizziness while taking it, so avoid driving or operating heavy machinery.

Phenibut use is not recommended if you have a history of drug/substance abuse.

It is a derivative of GABA A, one of the most common receptors that cause sedation and mood stabilization in drugs like benzodiazepines (Valium, Xanax etc.)

There is a high likelihood that Phenibut use can cause reduced motivation, psychological dependence and addiction.

Long-term users should closely monitor for changes in mood or increased anxiety, as they could be signs of withdrawal.

Phenibut produces a calming effect and helps in alleviating anxiety. In addition to these benefits, Phenibut has also been known to help with:

  • Poor concentration and focus. (Personally, I find it helps me concentrate better).
  • Anxiety. (This happens to be one of the most common uses for phenibut)
  • Depression. (I've also found that it can improve my mood and decrease my stress levels.)
  • Insomnia

The Effects Differ From Person To Person

Phenibut is most commonly used by individuals with chronic stress or anxiety. It is also popular among bodybuilders looking for a mental boost and to relax after a workout.

You can find many different nootropic supplements containing Phenibut on the market today, although not all manufacturers disclose the full list of ingredients in their product.

It is important to know what you’re putting into your body, as this chemical may cause severe side effects and withdrawal symptoms. For this reason, I would recommend starting with lower doses and working your way up as needed.

As with any supplement, Phenibut should be used under the supervision of a doctor or qualified health professional.

The best way to take this supplement is to take it in capsule form. It comes in both powder and capsule form.

While consuming too much phenibut likely won’t cause long-term damage, it will have little to no therapeutic effects.

That being said if you feel any noticeable effects such as increased anxiety, decrease in motivation or feelings of euphoria, stop consuming immediately and see your doctor or health practitioner.

Also, remember that phenibut may potentially cause addiction similar to the way that benzodiazepines do in certain individuals (this does not mean that every person who becomes dependent on benzodiazepines will necessarily become dependent on phenibut).

Taking too much can lead to excess amounts of GABA in the brain, leading to overstimulation and possibly even neurotoxicity.