Flmodafinil Review: CRL-40,940 Dosage & Where to Buy

While you think you can’t have that extra burst of energy to finish your day’s task, this Flmodafinil review explains how this drug makes you never want to sleep again.

Tagged as the most potent nootropic to improve study and work, Flmodafinil or CRL-40,940 gets all the talk about improved performance, wakefulness, quick thinking, and general cognitive enhancement.

It will be easier to understand why CRL-40,940 should get all the praises for its effect when we know how it was discovered.

So let’s dive in.

What Is Flmodafinil (CRL-40,940)?

flmodafinil CRL-40,940 structure

It was in the 1970s when people started looking for a cure for sleeping disorders such as idiopathic hypersomnia (IH) and narcolepsy.

After intensive research and laboratory tests, adrafinil became available. The drug helped people become more attentive and positive.

Once taken into the body, it metabolizes, producing the chemical modafinil or methylsulfinyl acetamide.

People looked up to modafinil as the perfect nootropic, and it was even branded as a smart drug [R].

However, further studies came to the final development of flmodafinil CRL-40,940 also known as bisfluoromodafinil and lauflumide [R].

CRL-40,940 is a derivative of modafinil that lasts 40% longer and has higher bioavailability. Meaning it is more readily absorbed and requires less time to kick in.

Phases of clinical trials have been conducted since CRL-40,940 was patented in 2013.

EffectsIncreases dopamine levels, improved performance and concentration
Potential Side EffectsAnxiety, dizziness, nausea, stuffy nose, difficulty sleeping, indigestion
Half-Life10 - 12 hours
Common Dosage150 mg daily
Content1500 mg
Money Back Guarantee30 days
Rating⭐⭐⭐⭐⭐ 4.8/5
Best VendorClick Here ›

The completion of its investigation is being anticipated as it turns out to be a non-amphetamine wakefulness promoting agent and lasts for longer periods.

flmodafinil review

What Is The Use Of Flmodafinil?

The initial purpose of this nootropic is to promote wakefulness to those who are experiencing narcolepsy.

Narcolepsy is a recurrent central nervous system condition that makes people unable to control sleep.

This derivative of the racemic modafinil will help you get things done. Your productivity will be covered as it promotes quick thinking, increased energy, and improved performance.

It is constructed from 2 bis fluoro-groups so even at a single dose, you will feel the kick of an improved cognition shortly after taking it.

Flmodafinil Benefits & Effects

As the final development of Adrafinil, CRL-40,940 works like magic when you use it even at a small amount.

Its wonders are listed here.

  • Neuroprotective agent. Like coffee, CRL-40,940 has the effect of caffeine. It is a drug that will keep you alert and active. One positive point is that Its effects last for a longer period compared to modafinil.
  • Dopamine reuptake inhibitor. When you are feeling a little bit off that means there is not enough dopamine available. The product works to produce feelings of excitement, reward, and confidence.
  • Antidepressant. CRL-40,940 spreads a feeling of excitement making you feel great and not want to sleep or be unproductive.
  • Anti-aggressive. It works to improve aggressive conditions. It works as an inhibitor that calms you at times when you feel uneasy or agitated.It is a nootropic that promises its users wakefulness, focus, and enhanced mental alertness. There are also additional benefits that you can get from it. Its use can also be accounted for the following effects:
  • Enhanced cognition. It works as a central nervous system stimulant keeping you alert, awake, and feeling good. It also improved concentration. In short, it tells your brain to avoid daytime sleepiness and boosts your motivation when you need it the most.
  • Decreased risk of depression. The chemical carries feelings of excitement and pleasure to all the neurons. When you feel down, the antidepressant effect supplement can help you feel better and positive. When used, it targets the dopamine receptors to increase dopamine so you feel positive and you become a quick thinker.
  • Increased productivity. Since it can increase the dopamine levels, you feel more energetic to finish all the day’s tasks. You might even have that extra energy to double your productivity while you still feel motivated.

How Does It Work in the Brain?

This drug is more potent compared to Modafinil. You will be able to experience the effects even when taking a small dose.

The compound increases dopamine levels by targeting D2 receptors.

This mechanism of action gives you a boost in cognition and productivity.

Flmodafinil Dosage & How To Take

The average dose of Modafinil is 200 mg or 8.23 g mol. Since Flmodafinil has better bioavailability, a low dose can be as effective.

It's advisable to take an Flmodafinil dosage of around 150 mg or 6.17 g mol.

Once absorbed in the body, the drug gives you new energy. And compared to Modafinil, it lasts slightly shorter than 10-12 hours.

This drug is ideally administered in the morning for those who work daytime. For night shift workers, the recommended dose should be taken at least one hour before work or in the morning for excessive daytime sleepiness caused by sleep deprivation.

It should be taken into mind that since the compound gives the feeling of excitement, a high dose may cause uncontrollable confidence and euphoria.


A 200 mg dose of modafinil is already effective to up your positive senses. Taking a similar amount of Flmodafinil is sure to give an intense effect.

It is constructed from 2 bis fluoro-groups and its increased bioavailability makes it even more worthy of a try.

Being more potent, it has fewer side effects than modafinil. A person taking it may feel the following:

  • Anxiety
  • Stuffy nose
  • Diarrhea
  • Dizziness
  • Difficulty sleeping
  • Nausea
  • Indigestion
  • Stuffy and runny nose
  • Slightly increased blood pressure

Using this may also interact with other supplements. It can affect the activity of enzymes on the liver that are responsible for the metabolism of other drugs.

Alcohol may also have a reaction when taking flmodafinil or modafinil. It's best to avoid drinking while taking this drug and to always stick to the recommended dosage.

Flmodafinil Reviews & Experiences Shared On Reddit

Here are some reviews from its users.

According to tmj87:

“...Overall, comparing Flmodafinil to Modafinil, from my experience it is way superior. No headaches, no mood swings, and only need really small doses to get full focus.

Word of caution though, do your research in where you decide to buy it first. I made that mistake!”

According to Johnjames1987:

“...It's said Flmodafinil is x4 more potent than modafinil. I really can feel the difference and take a maximum of 50-75mg each time.”

According to janismm88:

“I have been using modafinil a lot even at first times when I tried it it was never so powerful as flmodafinil yes moda maybe gets you motivated etc but you are like cold robot with people. Flmodafinil powder just makes me more happy plus motivated libido is through the roof…”

Flmodafinil Stacks

To get the best results, Flmodafinil can be stacked with other supplements.

Naltrexone treats alcohol and drug addiction while flmodafinil is a dopamine reuptake inhibitor that helps prevent cocaine relapse. When used together these two are perfect for those who are undergoing treatment for substance abuse.

Flmodafinil can also be stacked with Phenylpiracetam, Taurine, L-Theanine, or Noopept.

Where To Buy Flmodafinil?

Flmodafinil is a research chemical that started with trials in 2015.

It's difficult to find a vendor as most of the sale that is happening is still unlicensed and all product descriptions point out that it's for research purpose only and not meant for human consumption.

You should buy through this vendor because it has an independent lab testing verification.

They sell a variety of research chemicals and so far they have a good track record for selling nootropics.

Frequently Asked Questions (FAQ)

Most of what you think should be answered here.

Flmodafinil Vs. Modafinil: What's The Difference?

Before jumping into buying, you should know how this drug is different from modafinil.

Flmodafinil is constructed from 2 bis fluoro-groups and is known as the bisfluoro analog of modafinil.

It's a new drug that is more potent than modafinil.

Modafinil also works as a stimulant and promotes wakefulness. Modafinil is produced when adrafinil is metabolized.

Is It Safe?

Yes, it is safe to use in small doses and the fact that it has a shorter half-life than its parent compound could be an advantage as well.

Is Flmodafinil Legal?

Yes, it's legal in the United States. Although only those 18 years and older can buy the capsule or powder form.

It is being sold on reputable nootropics websites such as Science.bio as a research chemical and not to improve cognitive function in humans.


Flmodafinil is an improved modafinil that makes you say goodbye to sleep cravings.

If you need that extra energy to push you to be productive and reduce daytime sleepiness, Flmodafinil probably the best fast-acting nootropic to take.

You can be more efficient than if you took plain Modafinil while always being in a great mood.