Language suppression can be described as a decrease in one's ability to use and understand spoken language. This creates the feeling of finding it difficult or even impossible to vocalize one's own thoughts and to process the speech of others. It is worth noting that the ability to speak oneself and to process the speech of others do not necessarily become suppressed simultaneously. For example, one may find themselves unable to formulate a coherent sentence while still being able to perfectly understand the speech of others.
Language suppression is often accompanied by other coinciding effects such as analysis suppression and thought deceleration. It is most commonly induced under the influence of heavy dosages of antipsychotic compounds, such as quetiapine, haloperidol, and risperidone. However, it can also occur in a more powerful although less consistent form under the influence of heavy dosages of hallucinogenic compounds such as psychedelics, dissociatives, cannabinoids, and deliriants. This is far more likely to occur when the person is inexperienced with that particular hallucinogen.
Compounds which may cause this effect commonly include:
4-AcO-DMT, 4-HO-DPT, Alcohol, Alprazolam, Ayahuasca, Carisoprodol, DOB, DPT, Datura, Desoxypipradol, Dextromethorphan & Diphenhydramine, Diphenhydramine, ETH-LAD, LSA, LSM-775, MET, PARGY-LAD, PRO-LAD, Pentobarbital, Phenobarbital, Prochlorperazine, Psilocin, Psilocybin mushroom, Quetiapine, Salvinorin A, Secobarbital, Temazepam, Zolpidem
Documentation written by Josie Kins