Phenibut Dosage and How to Take It

Taken at the right dosage, Phenibut can help lower anxiety, enhance mood and produce other positive health-related effects. At the same time, it can be habit-forming and, with that in mind, correct usage and careful dosages are strongly advised.

In this post, we discuss rules of thumb for Phenibut dosage as well as how to take the supplement and how to use it in initial stages.

What is Phenibut?

Phenibut is a depressant and is comparable to the brain chemical gama-aminobutyric acid, or GABA, which is the main blocking neurotransmitter in the brain. It also goes by other names such as Noofen, Fenibut, Phenybut and Citrocard.

Phenibut is used both as nootropic and a recreational drug. Since it is similar in composition to the brain chemical GABA, research and annecdotal reports have shown that it lowers anxiety, enhances mood and also produces other positive health-related effects when taken at the right dosage. Phenibut has been utilized in Russian pharmacology since the 1960s and was originally developed and prescribed as a stress-relief that doesn’t impede cognition. It has also been used to treat a number of conditions, which include:

PTSD (Post-traumatic Stress Disorder)
Balance disorders (Vestibular)
Irregular Heartbeat
Appetite control
Other conditions

If you are interested in the effects of Phenibut, read our post about the benefits of Phenibut.

In the United States and other parts of the world, Phenibut has not been approved for clinical use, but it is available as a nutritional supplement (amino acid derivative). It is considered legal in the United States, as long as no therapeutic claims are publicly made that counter Food and Drug Administration guidelines (FDA). It is technically not a controlled substance, so possession is legal without a prescription in America. It can be purchased online and from reputable supplement retailers.

Phenibut dosage

Any Phenibut dose should be taken cautiously. The appropriate dose will hinge on several factors that include:

The user’s age
The user’s body weight
The user’s state of health
The user’s other health related conditions

With scientific information being limited, determining an appropriate dosage range can be difficult. Since Phenibut can be considered an underground and unrestricted supplement, it may present safety concerns if taken without being properly informed.

Like many other supplements in the marketplace, improper dosing may render the experience useless in the best scenario, and harmful in the worst. Usually, if there are any directions on the supplement packaging or labeling, it is vital those guidelines be followed. Consultation with a natural supplement expert or a healthcare provider is always best before using any substance or supplement.

From personal experience and following an in-depth research of other users’ reports, there are certain rules that you should respect when choosing your Phenibut dosage:

If it’s your first time, start small (250-500 mg)
Do not take a dose of more than 1.5 grams a day (1500 mg)
Do not take a dose more often than three (3) days in a week. Phenibut is known to become easily tolerated by the body, which may lead to addiction.

How to take Phenibut

Phenibut doses can be taken in capsule or powder form. The powder form should be mixed with warm water or another warm beverage of choice. The warmth will activate the Phenibut crystals and dissolve them quickly as well as allow them to enter the bloodstream rapidly.

Phenibut can be taken sublingually, which means it is placed under the tongue for a much faster absorption rate and entrance into the bloodstream.

Each Phenibut dose should be taken on an empty stomach. Consuming it with food delays the full benefits of it. Waiting at least 45 minutes after consuming food will allow the supplement to work normally.

Phenibut should not be taken/mixed with alcoholic beverages, as combining Phenibut with alcohol overstimulates GABA receptors, so there is cause for an overload of the effects with this combination, which can be hazardous to the health of the user.

The maximum recommended dosage of Phenibut is 1.5 grams a day (or 1500 milligrams).

Phenibut should not be taken as an everyday supplement.

Phenibut should not be taken while operating a motorized vehicle.

Phenibut should not be taken by women who are pregnant or breast-feeding, as insufficient information is available regarding the safety of use during periods like these.

Phenibut should be examined for potential side effects before supplementation. Individuals using Phenibut should watch for warning signs of:

  • hangover-like effects
  • dizziness
  • nausea
  • balance difficulties
  • fatigue
  • electrical shock feelings in extremities
  • breathing difficulties (from large doses)
  • unconsciousness (from large does)

If Phenibut is used on a regular, day-to-day basis, it can lead to heightened tolerance and addiction. People who do use Phenibut regularly and attempt to suddenly go cold-turkey are likely to experience withdrawal symptoms that can include:

  • loss of appetite
  • nausea
  • anxiety
  • insomnia
  • muscle aches

Phenibut dosage for beginners

Jar with 60 capsules of 250mg Phenibut doses

Individuals who are interested in using Phenibut for the first time should consider the reasons why they want to use it. If it is for health reasons, mood enhancement or other situations, he or she should be aware of the side effects that can occur from improper use. People with reoccurring allergic tendencies towards any type of medicine or supplement should definitely consult a physician before experimenting with it.

Correct dosage is particularly important for first time users. Doses should be low in the beginning and gradually increased to produce the desired results. A starting dose would be approximately 250-500 milligrams. A low dose may not create any immediate or significant changes or improvements, but it’s a good enough starting point to make sure that you stay safe.

Where to Buy Phenibut

At, you can buy Phenibut in a jar of 60x250mg capsules. Phenibut is also included in our Social Stack and Focus Without Stress Stack.

All of our products are quality tested once after manufacturing, and then undergo a strict process of quality assurance by an independent third-party lab. You can find a link to our Certificate of Authenticity on the Phenibut product page. We test for identity, purity, and the presence of heavy metals use FTIR and HPLC to make sure the sample does not contain heavy metals.


Phenibut is the type of substance that may seem innocent at first, but can be quite dangerous if taken recklessly.

Phenibut in powder form is quite popular and often preferred by other users due to it being cheaper than capsules. It’s easier to make mistakes regarding Phenibut dosage when you’re approximating, which is why it’s best to measure your doses using a scale or simply go for capsules.

Phenibut can be mildly relaxing in low doses, considerably potent as a recreational substance in moderate doses, and outright dangerous when exceeding a certain threshold.

Consult your doctor beforehand, start low and be very careful with dosing when it comes to Phenibut.