Comprehensive guide by Matt from  PHENIBUTHERO

An example of a proper Phenibut dose.

If you're reading this right now, phenibut has probably piqued your interest (and that's probably putting it lightly).

But before you get your feet too wet, we wanted to make sure you had a grasp of all practical aspects of using phenibut.

Hence this - the Ultimate Phenibut Dosage Guide!

And if you don't know what the heck phenibut is at all, then you probably missed out on our main FAQ guide.

If so, we'd recommend spending a few minutes checking that out first.

Otherwise, let's get right into it!

How much phenibut to take

This is the starting point for getting into phenibut so let's get that out of way.

The generally accepted amount for a single dosage is:

750 to 1500mg

The reason for the range is simply because the typical dosage varies with the user.

For example, if you weigh more, then your dosage may need to be increased accordingly.

A larger man and a petite woman ready to take phenibut.
If you're heavier you may need a larger dose. If you're smaller, you may need a smaller one.

Or if you personally want a better high, then you may also choose to increase the dosage slightly.

If you are targeting experiencing the phenibut high in general, this is definitely the dosage to use.

And for the most part, this is the dosage you will use for all the many practical applications of phenibut as well.

There are some special cases - for example, when using phenibut to improve sleep, only 100 to 300mg should be used.

But just remember 750 to 1500mg (or about 1g) and you'll be set for most cases.

Dosage for first time users

If it's your first time using phenibut, start with 750mg, perhaps even a bit lower.

Note that it is not uncommon for people to report not feeling anything at all at 750mg.

So if that's you, then definitely increase your dosage accordingly.

Again, for most people, a satisfying dosage will fall between 750 and 1500mg.

2 Golden Rules for Phenibut Dosage

As you can probably tell, the exact dosage you take is not set in stone.

Even if you know your "typical dosage", that doesn't mean you have to take that much every single time.

Having said that, here are two solid rules to always keep in mind for successful phenibut use:

  1. A typical dosage should be between 750 and 1500mg (varying from person to person).

  2. Do not consume more than 2000mg of phenibut in a 24-hour period.

If you read from other sites that going over 2000mg is doable, we recommend not listening to them.

And it's not that what they're saying is untrue.

But doing so is when the unpleasant side effects start to kick in.

Keep reading to see why it is important to dose properly (and therefore follow our two golden rules).

It'll save you from a lot of headache in the future.

How to Take a Phenibut Dose

Phenibut is a powder that can be ingested in various ways. Here are the three most popular methods:

The Toss-and-Wash Method

If you are working with phenibut powder directly, then this is the fastest method.

  1. Measure out the dose of phenibut onto a piece of paper or your credit card.

  2. Toss the dose into the back of your mouth (be careful not to choke on it).

  3. Take a sip of water and gulp it all down at once.

  4. Drink more water to wash any residual phenibut down.

Man taking phenibut via the toss-and-wash method.
Taking phenibut using the "Toss-and-Wash" method.

The Stir-and-Drink Method

This is a slightly more popular method that takes some extra steps to help you avoid the bitter taste of phenibut.

  1. Measure out the dose of phenibut and pour into a glass of water or other liquid of choice.

  2. Stir the liquid until it phenibut is mixed completely, just like you would do with a powdered drink mix.

  3. Drink the drink in its entirety.

A dosage of phenibut dumped into a glass of water.
The stir-and-drink method is the most popular way of taking phenibut.

As should be obvious, by replacing water with something sweeter like fruit juice, you can minimize the taste.

Phenibut Capsules

This is the most popular method hands-down, as it is quite convenient compared to dealing with phenibut in its powder form directly.

Luckily for you, we have an extensive article on phenibut capsules.

Check it out!

Ultimately, the choice is up to you, as long as the proper dosage of phenibut makes it into your digestive tract.

How long will my phenibut dosage typically last?

First off, it is important to note that it will take about 30 minutes before you start to feel the effects of phenibut.

This will give you an idea of when to take phenibut (i.e. 30 minutes before you want to start feeling it).

As a general guideline, before the effects start to wear off significantly, a typical dosage of phenibut will last:

6 hours

However, the effects can easily last the rest of the day, to varying degrees.

This is because phenibut's action on the GABA receptors can linger long after it's been excreted from your kidney.

And obviously, taking over or under the typical dosage will vary the length accordingly.

Having said that, in general, you may start seeing diminishing returns after 5-6 hours.

You can always take another dose, but again, we strongly advise against taking more than 2000g of phenibut in a 24-hour period.

Why Should I Dose Phenibut Properly?

Here are three important reasons to dose properly.


Phenibut withdrawal is when you stop taking phenibut too quickly.

When withdrawal happens, you typically experience undesired physical symptoms like nausea, tremors, and restlessness.

Withdrawal can happen with other drugs as well.

For example, the caffeine in coffee: If you're used to taking 3 cups a day, and then suddenly stop drinking, then you may experience a caffeine withdrawal.


Phenibut Tolerance is when you require larger and larger doses of a drug to get the same level of effects as the first time you took the drug.

This is not good because you're effectively spending more to get the same high / effects, as time goes on.

Maintaining a consistent weekly and daily phenibut dosage can help to prevent a tolerance build-up.

Again, using coffee as an example: once you stop being diligent and start drinking more and more coffee, you become tolerant to the positive effects of coffee.


Overdosing on phenibut, while not as dangerous as other "hard drugs", is still something that must be avoided as much as possible.

Fortunately, this is really easy to do.

If you follow the basic rules of phenibut dosage and take it responsibly, it's extremely unlikely that you will overdose.

Typical Phenibut Dosing Schedule

For those who would like a more real world example of how phenibut can fit into your daily lives, I will explain just how I've scheduled phenibut to fit into my lifestyle over the past 7 years.

Phenibut while in college - 2011 to 2015

a 750mg phenibut dosage using a scoop.
Me taking a typical phenibut dosage before class.

When I first started using phenibut, it was primarily for succeeding while studying at Stanford University.

I would use phenibut once a day, getting it to "kick in" right before my first class of the day, with it typically lasting until my last class finished.

I'd take a break on Sunday (my sleep-in day) and on Wednesday (when I typically didn't have many classes).

Saturday was more for recreational use.

I would also take a 2nd dose on Friday nights if I wanted to turn up to certain parties.

And most importantly, I would always be sure to take some phenibut before my final exams, whether the exams were first thing in the morning, or later on in the evening.

Check out a summary of my general phenibut schedule below:

Phenibut today while working - 2015 to Present

Me showing off my suit thanks to all the money I made with a successful career with the help of phenibut.
I would be lying if I said phenibut DIDN'T help me make 6-figures.

After graduating from Stanford and starting my six-figure salary job, my new lifestyle afforded me time for working out on Mondays, Wednesdays, and Fridays.

So I started using phenibut accordingly to improve my workouts.

I work in phenibut on Saturdays and Sundays (both of which are recreational days for me now).

And as always, if I ever need to get a better night's rest, or have to present my work to the big bosses at my company (you know, the ones who determine my bonuses and pay raises!), I take phenibut accordingly.

Check out a summary of my general phenibut schedule below:

School Work
Monday Class (1) Workout (1)
Tuesday Class (1) -
Wednesday - Workout (1)
Thursday Class (1) -
Friday Class (1) Workout (1)
Saturday Recreation (1) Recreation (1)
Sunday - Recreation (1)
Other Occasions For some Friday nights, and all final exams For quality sleep, and work presentations

Note that because I keep my daily dosage amounts in check (I keep them around 1000 to 1500g), I do not have to worry too much about cycling.

I just make sure to take a day or two off each week and I'm good.

As you can see, phenibut can be worked into any schedule that you have.

And what's really great is that you are always free to work phenibut in whenever you really need it for whatever reason.

Thanks for reading!

Overall, phenibut dosages are not complicated.

As long as you know what to expect when taking phenibut, and always make sure you take it safely, you will reap the many benefits.

(Don't know what the benefits of phenibut are? Check out our Phenibut Uses page to see the many applications of phenibut that can change your life for the better!)

So if you are ready to take the next step and try phenibut for yourself, then click here.