I have tried to keep this report as objective as possible, please think very carefully before obtaining/consuming this substance. It is very compulsive, especially when smoked. Tolerance rises quickly and will carry over to other opioids. If you have a particular affinity to opioids it is highly likely to cause you problems even if your prior use has been somewhat "responsible".
User
Male, 85kg, previous experience of various classes with a preference for opioids.
Previous use: Codeine, Dihydrocodeine, Tramadol, O-desmethyltramadol, Oxycodone, Opium and Poppy Tea.
My use is infrequent and cyclical but tolerance is higher than I'd expect given how irregularly I take opioids.
Substance
Butyrfentanyl (N-(1-(2-phenylethyl)-4-piperidinyl)-N-phenylbutyramide)
Preparation
50mg of the substance in a solution 5mg/ml with bacteriostatic water (0.9% NaCl & 0.9% Benzyl Alcohol).
A portion of this was further diluted to 1mg/ml for allergy tests and measuring tolerance.
Experiences
In the following experiences increased doses have been slightly offset by an increasing tolerance.
These doses are from the first few initial uses, tolerance increases rapidly. My preferred ROA is smoked due to the fast onset, and my dose has climbed from an initial enjoyable dose of 0.1-0.25mg to 2mg+ with redoses.
0.1mg sublingual
Mild effects felt around 10 minutes after administration, full dose felt around 20 minutes.
A low dose to start with, minor opioid warmness felt & a general sense of wellbeing.
Nothing too profound, mostly worn off within 1-2 hours. Fully back to baseline within 3 hours.
0.1mg smoked
0.1cc of 1mg/ml solution was loaded into a homemade light bulb vape.
Once water had mostly boiled off effects were felt almost instantly and stronger than the peak of sublingual use. Peak effects felt at around 5-10 minutes, gradually mellowing out for the following 1 hour. Back to baseline within 1.5-2 hours.
0.1mg insufflated
0.1cc of 1mg/ml solution was loaded into a 1cc syringe, needle was removed and solution squirted/sniffed from the syringe. Effects felt between 5-10 minutes after dose with a slightly shorter duration than sublingual. No pain felt with insufflation, though this is likely due to the very low amount of actual substance/liquid used
0.5mg smoked
Effects felt instantly and a good rush felt. Increased sedation and stronger euphoria. Pupils like pinpricks and a large perceived increase in body temperature. Very mild itchiness felt but nowhere near the extent to that of with codeine.
Duration increased with dosage and a fairly strong desire to redose.
I can see this ROA being problematic for anyone particularly fond of opioids or with low levels of self-restraint.
I would consider the differing levels of compulsiveness beween ROAs as slightly less extreme than oral vs smoked MDPV.
Increasing doses and general notes
Naturally, as doses were increased there was in increase in effects felt.
I've found itchiness doesn't increase past a certain point and at no dose is it as bad as the histamine related itchiness of codeine. Increased doses also resulted in nausea not experienced at lower doses, this sometimes lead to vomitting.
My preferred ROA is smoking due to the fast onset. I've found the compulsion to redose is reduced slightly with an initial sublingual dose for a "base" topped up with a smoked dose for the rush.
I've found smoking of butyrfentanyl can cause an odd dissociativesque effects not noticed with other ROAs. It isn't similar to classic dissociatives, more a peculiar sense of anticipation and confusion. These effects were only felt during the initial rush, lasting for about 30 minutes.
I vaguely remember reading something about butyrfentanyl being a potential kappa agonist, this may be a factor.
These effects were somewhat diminished when care was taken to heat the substance slowly, maybe suggesting the effects are due to a pyrolisis product?
Summary
Positive and negative effects are more or less typical of all opioids
Positive effects
Euphoria/General sense of well-being
Sedation
Neutral/negative effects
Nausea
Confusion (with smoked doses)
Compulsive (with smoked doses)
Constipation
Dry mouth
Slight Itchiness
Low libido
Urinary retention (though not to the same extent as I experience with opium)
----
That's all I have to report right now, I haven't elaborated on effects too much as they are similar to well documented effects of fentanyl. I may expand on this report in future but I thought I'd post it now as there doesn't seem to be much information available.
User
Male, 85kg, previous experience of various classes with a preference for opioids.
Previous use: Codeine, Dihydrocodeine, Tramadol, O-desmethyltramadol, Oxycodone, Opium and Poppy Tea.
My use is infrequent and cyclical but tolerance is higher than I'd expect given how irregularly I take opioids.
Substance
Butyrfentanyl (N-(1-(2-phenylethyl)-4-piperidinyl)-N-phenylbutyramide)
Preparation
50mg of the substance in a solution 5mg/ml with bacteriostatic water (0.9% NaCl & 0.9% Benzyl Alcohol).
A portion of this was further diluted to 1mg/ml for allergy tests and measuring tolerance.
Experiences
In the following experiences increased doses have been slightly offset by an increasing tolerance.
These doses are from the first few initial uses, tolerance increases rapidly. My preferred ROA is smoked due to the fast onset, and my dose has climbed from an initial enjoyable dose of 0.1-0.25mg to 2mg+ with redoses.
0.1mg sublingual
Mild effects felt around 10 minutes after administration, full dose felt around 20 minutes.
A low dose to start with, minor opioid warmness felt & a general sense of wellbeing.
Nothing too profound, mostly worn off within 1-2 hours. Fully back to baseline within 3 hours.
0.1mg smoked
0.1cc of 1mg/ml solution was loaded into a homemade light bulb vape.
Once water had mostly boiled off effects were felt almost instantly and stronger than the peak of sublingual use. Peak effects felt at around 5-10 minutes, gradually mellowing out for the following 1 hour. Back to baseline within 1.5-2 hours.
0.1mg insufflated
0.1cc of 1mg/ml solution was loaded into a 1cc syringe, needle was removed and solution squirted/sniffed from the syringe. Effects felt between 5-10 minutes after dose with a slightly shorter duration than sublingual. No pain felt with insufflation, though this is likely due to the very low amount of actual substance/liquid used
0.5mg smoked
Effects felt instantly and a good rush felt. Increased sedation and stronger euphoria. Pupils like pinpricks and a large perceived increase in body temperature. Very mild itchiness felt but nowhere near the extent to that of with codeine.
Duration increased with dosage and a fairly strong desire to redose.
I can see this ROA being problematic for anyone particularly fond of opioids or with low levels of self-restraint.
I would consider the differing levels of compulsiveness beween ROAs as slightly less extreme than oral vs smoked MDPV.
Increasing doses and general notes
Naturally, as doses were increased there was in increase in effects felt.
I've found itchiness doesn't increase past a certain point and at no dose is it as bad as the histamine related itchiness of codeine. Increased doses also resulted in nausea not experienced at lower doses, this sometimes lead to vomitting.
My preferred ROA is smoking due to the fast onset. I've found the compulsion to redose is reduced slightly with an initial sublingual dose for a "base" topped up with a smoked dose for the rush.
I've found smoking of butyrfentanyl can cause an odd dissociativesque effects not noticed with other ROAs. It isn't similar to classic dissociatives, more a peculiar sense of anticipation and confusion. These effects were only felt during the initial rush, lasting for about 30 minutes.
I vaguely remember reading something about butyrfentanyl being a potential kappa agonist, this may be a factor.
These effects were somewhat diminished when care was taken to heat the substance slowly, maybe suggesting the effects are due to a pyrolisis product?
Summary
Positive and negative effects are more or less typical of all opioids
Positive effects
Euphoria/General sense of well-being
Sedation
Neutral/negative effects
Nausea
Confusion (with smoked doses)
Compulsive (with smoked doses)
Constipation
Dry mouth
Slight Itchiness
Low libido
Urinary retention (though not to the same extent as I experience with opium)
----
That's all I have to report right now, I haven't elaborated on effects too much as they are similar to well documented effects of fentanyl. I may expand on this report in future but I thought I'd post it now as there doesn't seem to be much information available.
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