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4-Hydroxy-N,N-diisopropyltryptamine (4-HO-DiPT or Iprocin) is a synthetic psychedelic drug. It is a higher homologue of psilocin, [4-HO-DET]], and 4-HO-DPT and has a tryptamine molecular sub-structure.
4-HO-DiPT is orally active at around 3 mg and above, and its effects last for 2-3 hours. Higher doses such as those above 30 mgs can increase the duration of the effects significantly.
The effects of 4-HO-DiPT are broadly comparable to those of other serotonergic psychedelics such as LSD and psilocybin, but they are distinguished by their relative brevity. Shulgin "doubt[s] that there is another psychedelic drug, anywhere, that can match this one for speed, for intensity, for brevity, and sensitive to dose, at least one that is active orally." An idiosyncratic effect of the drug, also noted by Shulgin, is its tendency to induce tremors.
Some users have reported a minor audio distortion with lower dosages. Higher dosages increase the polarity of the distortion. It is defined as being slightly lower in pitch and creating several different effects, such as pitch bend, volume distortion, and rate distortion. As with most DiPT psychedelics, music can become more dissonant and less harmonious. Users have also reported a visual distortion widely comparable to the hallucinogen LSD.
Sveriges riksdags health ministry Statens folkhälsoinstitut classified 4-HO-DiPT as "health hazard" under the act Lagen om förbud mot vissa hälsofarliga varor (translated Act on the Prohibition of Certain Goods Dangerous to Health) as of Mar 1, 2005, in their regulation SFS 2005:26 listed as 4-hydroxi-N,N-diisopropyltryptamin (4-HO-DIPT), making it illegal to sell or possess.
4-HO-DiPT is not scheduled at the federal level in the United States, but it is possible that it could be considered an analog of 5-MeO-DiPT, in which case purchase, sale, or possession could be prosecuted under the Federal Analog Act.
- Erowid.org 4-HO-DiPT Dosage Vault
- Shulgin, Alexander; Ann Shulgin (September 1997). TiHKAL: The Continuation. Berkeley, California: Transform Press. ISBN 0-9630096-9-9. OCLC 38503252.
- Entry at Erowid
- Tihkal 4-HO-DIPT entry
- 21 CFR — SCHEDULES OF CONTROLLED SUBSTANCES §1308.11 Schedule I.
- Florida Statutes - Chapter 893 - DRUG ABUSE PREVENTION AND CONTROL