|Summary sheet: Tapentadol|
|Common names||Tapentadol, Nucynta, Palexia, Yantil, Yantil SR|
|Routes of Administration|
|Selective serotonin re-uptake inhibitors|
|Serotonin-norepinephrine reuptake inhibitors|
Tapentadol often sold under the brand name Nucynta is a synthetic opioid analgesic similar in structure to tramadol. Tapentadol has a duel mechanism of action, working on both the μ-opioid receptor and also acting as a norepinephrine reuptake inhibitor. Tapentadol is used in the management of moderate to severe pain. The subjective effects of tapentadol are similar to those of tramadol. Many users report extreme pain when trying to insufflate tapentadol.
Tapentadol is similar in structure to both tramadol and dextropropoxyphene. Tapentadol has one cyclic ring, unlike tramadol which has two. The empirical formula of tapentadol is C14H23NO and has a molar mass of 221.339 grams per mole.
Opioids exert their effects by binding to and activating the μ-opioid receptor. This occurs because opioids structurally mimic endogenous endorphins which are naturally found within the body and also work upon the μ-opioid receptor set. The way in which opioids structurally mimic these natural endorphins results in their euphoria, pain relief and anxiolytic effects. This is because endorphins are responsible for reducing pain, causing sleepiness, and feelings of pleasure. They can be released in response to pain, strenuous exercise, orgasm, or general excitement. Tapentadol has an oral bioavailability of about 32%. Tapentadol is metabolized by the Cytochrome P450 system in the liver and is excreted by the kidneys in urine as well as in feces.
The effects listed below are based upon the subjective effects index and personal experiences of PsychonautWiki contributors. These effects should be taken with a grain of salt and will rarely (if ever) occur all at once, but heavier doses will increase the chances of inducing a full range of effects. Likewise, adverse effects become much more likely on higher doses and may include serious injury or death.
The general sensation of tapentadol can be described as one of euphoria, relaxation, anxiety suppression and pain relief.
- Pain relief
- Physical euphoria - This particular substance can be considered as less intense in its physical euphoria when compared with that of morphine or diacetylmorphine (heroin). The sensation itself can be described as extreme feelings of intense physical comfort, warmth, love and bliss.
- Respiratory depression - At low to moderate doses, this effect results in the sensation that the breath is slowed down mildly to moderately, but does not cause noticeable impairment. At high doses and overdoses, opioid-induced respiratory depression can result in a shortness of breath, abnormal breathing patterns, semi-consciousness, or unconsciousness. Severe overdoses can result in a coma or death without immediate medical attention.
- Cough suppression
- Difficulty urinating
- Pupil constriction
- Decreased libido
- Appetite suppression
- Dizziness - Tapentadol causes dizziness at a higher rate than other opioids
- Orgasm suppression
- Cognitive euphoria - This particular substance can be considered as less intense in its cognitive euphoria when compared with that of morphine or diacetylmorphine (heroin). The sensation itself can be described as powerful and overwhelming feelings of emotional bliss, contentment, and happiness.
- Anxiety suppression
- Compulsive redosing
- Dream potentiation
There are currently no anecdotal reports which describe the effects of this compound within our experience index. Additional experience reports can be found here:
Toxicity and harm potential
Tapentadol has a low toxicity relative to dose. As with all opioids, long-term effects can vary but can include diminished libido, apathy and memory loss. It is also potentially lethal when mixed with depressants like alcohol or benzodiazepines and generally has a wider range of substances which it is dangerous to combine with in comparison to other opioids. Tapentadol is known to lower the seizure threshold. It should not be taken during benzodiazepine withdrawals as this can potentially cause seizures.
It is strongly recommended that one use harm reduction practices when using this drug.
Tolerance and addiction potential
As with other opioids, the chronic use of tapentadol can be considered moderately addictive with a high potential for abuse and is capable of causing psychological dependence among certain users. When addiction has developed, cravings and withdrawal symptoms may occur if a person suddenly stops their usage.
Tolerance to many of the effects of tapentadol develops with prolonged and repeated use. The rate at which this occurs develops at different rates for different effects, with tolerance to the constipation-inducing effects developing particularly slowly for instance. This results in users having to administer increasingly large doses to achieve the same effects. After that, it takes about 3 - 7 days for the tolerance to be reduced to half and 1 - 2 weeks to be back at baseline (in the absence of further consumption). Tapentadol presents cross-tolerance with all other opioids, meaning that after the consumption of tapentadol all opioids will have a reduced effect.
Although many drugs are safe on their own, they can become dangerous and even life-threatening when combined with other substances. The list below contains some common potentially dangerous combinations, but may not include all of them. Certain combinations may be safe in low doses of each but still increase the potential risk of death. Independent research should always be done to ensure that a combination of two or more substances is safe before consumption.
- Depressants (1,4-Butanediol, 2m2b, alcohol, barbiturates, benzodiazepines, GHB/GBL, methaqualone) - This combination can result in dangerous or even fatal levels of respiratory depression. These substances potentiate the muscle relaxation, sedation and amnesia caused by one another and can lead to unexpected loss of consciousness at high doses. There is also an increased risk of vomiting during unconsciousness and death from the resulting suffocation. If this occurs, users should attempt to fall asleep in the recovery position or have a friend move them into it.
- Dissociatives - This combination can result in an increased risk of vomiting during unconsciousness and death from the resulting suffocation. If this occurs, users should attempt to fall asleep in the recovery position or have a friend move them into it.
- Stimulants - It is dangerous to combine tapentadol, a depressant, with stimulants due to the risk of excessive intoxication. Stimulants decrease the sedative effect of tapentadol, which is the main factor most people consider when determining their level of intoxication. Once the stimulant wears off, the effects of tapentadol will be significantly increased, leading to intensified disinhibition as well as other effects. If combined, one should strictly limit themselves to only taking a certain amount of tapentadol.
- Psychedelics - Tapentadol is well known to lower seizure threshold and psychedelics also cause occasional seizures.
Serotonin syndrome risk
Combinations with the following substances can cause dangerously high serotonin levels. Serotonin syndrome requires immediate medical attention and can be fatal if left untreated.
- MAOIs such as syrian rue, banisteriopsis caapi, 2C-T-7, αMT, phenelzine, selegiline, and moclobemide
- Serotonin releasers such as MDMA, 4-FA, methamphetamine, methylone and αMT
- Selective serotonin re-uptake inhibitors (SSRIs)
- Serotonin-norepinephrine reuptake inhibitors (SNRIs) such as tramadol and DXM
This legality section is a stub.
As such, it may contain incomplete or wrong information. You can help by expanding it.
- Germany: Tapentadol is a controlled substance under Anlage III of the BtMG. It can only be prescribed on a narcotic prescription form.
- United States - Tapentadol is a Schedule II Controlled Substance.
- United Kingdom - Tapentadol is a Class A, Schedule 2 drug in the United Kingdom.
- Risks of Combining Depressants (Tripsit) | https://tripsit.me/combining-depressants/
- Tapentadol PubChem | https://pubchem.ncbi.nlm.nih.gov/compound/9838022#section=Chemical-and-Physical-Properties
- Tapentadol pharmacology | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2888545/
- Gillman, P. K. (2005). Monoamine oxidase inhibitors, opioid analgesics and serotonin toxicity. British Journal of Anaesthesia, 95(4), 434-441. https://doi.org/10.1093/bja/aei210
- DEA Controlled Substances | https://www.deadiversion.usdoj.gov/schedules/orangebook/e_cs_sched.pdf
- UK Controlled Drugs | https://www.gov.uk/government/publications/controlled-drugs-list--2/list-of-most-commonly-encountered-drugs-currently-controlled-under-the-misuse-of-drugs-legislation