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Summary sheet: Bisfluoromodafinil
Chemical Nomenclature
Common names Flmodafinil, Flodafinil, Fluoromodafinil, Bisfluoromodafinil
Substitutive name Lauflumide
Systematic name 2-[Bis(4-fluorophenyl)methylsulfinyl]acetamide
Class Membership
Psychoactive class Stimulant / Eugeroic
Chemical class Benzhydryl
Routes of Administration

WARNING: Always start with lower doses due to differences between individual body weight, tolerance, metabolism, and personal sensitivity. See responsible use section.

Threshold 20 mg
Light 20 - 40 mg
Common 40 - 75 mg
Strong 75 - 110 mg
Heavy 110 mg +
Total 8 - 12 hours
Onset 15 - 30 minutes
Come up 30 - 60 minutes
Peak 3 - 6 hours
Offset 1 - 2 hours
After effects 1 - 8 hours

DISCLAIMER: PW's dosage information is gathered from users and resources for educational purposes only. It is not a recommendation and should be verified with other sources for accuracy.


Bisfluoromodafinil (Also known as Flmodafinil, Fluoromodafinil and CRL-40,940) is a eugeroic substance of the benzhydryl class. Bisfluoromodafinil is structurally similar to modafinil. It is a research chemical with little known about its exact pharmacology, although it is assumed to have similar effects as its parent compound modafinil.

History and culture

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Bisfluoromodafinil has a short history of reported use. The compound was patented in 2013 and has been undergoing clinical trials since 2015[1]. Bisfluoromodafinil has been available online as a research chemical, and has been reported to be used as a "smart drug" due to its similar subjective effects to modafinil.



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Subjective effects

This subjective effects section is a stub.

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Disclaimer: The effects listed below cite the Subjective Effect Index (SEI), an open research literature based on anecdotal user reports and the personal analyses of PsychonautWiki contributors. As a result, they should be viewed with a healthy degree of skepticism.

It is also worth noting that these effects will not necessarily occur in a predictable or reliable manner, although higher doses are more liable to induce the full spectrum of effects. Likewise, adverse effects become increasingly likely with higher doses and may include addiction, severe injury, or death ☠.

Physical effects

Visual effects

Cognitive effects

Auditory effects

Multi-sensory effects

Transpersonal effects

Experience reports

There are currently 0 experience reports which describe the effects of this substance in our experience index.

Additional experience reports can be found here:

Toxicity and harm potential


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Note: Always conduct independent research and use harm reduction practices if using this substance.

It is strongly recommended that one use harm reduction practices when using this substance.

Lethal dosage

Tolerance and addiction potential

Dangerous interactions


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Warning: Many psychoactive substances that are reasonably safe to use on their own can suddenly become dangerous and even life-threatening when combined with certain other substances. The following list provides some known dangerous interactions (although it is not guaranteed to include all of them).

Always conduct independent research (e.g. Google, DuckDuckGo, PubMed) to ensure that a combination of two or more substances is safe to consume. Some of the listed interactions have been sourced from TripSit.

Legal status


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Bisfluoromodafinil is not listed under any international drug schedules such as the UN Convention on Psychotropic Substances. As a result, it exists in a legal grey area in many countries, meaning that while it is not specifically illegal, individuals may still be charged for its possession under certain circumstances such as under analogue laws and with the intent to sell or consume.

  • United States: Bisfluoromodafinil is not scheduled in the United States. It may be considered an analogue of modafinil, a Schedule IV drug under the Controlled Substances Act, which means the sale for human consumption or the use for non-medical or research purposes could be prosecuted as crimes under the Federal Analogue Act.

See also

External links


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  1.  NLS Pharmaceuticals.